The Cambridge Springs

The Cambridge Springs Krzysztof Panczyk and Jacek IIczuk (e)AI~IBIITI First published in the UK by Gambit Publicati...

Author: Krzysztof Panczyk | Jacek Ilczuk

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The Cambridge Springs

Krzysztof Panczyk and Jacek IIczuk

(e)AI~IBIITI

First published in the UK by Gambit Publications Ltd 2002 Copyright © Krzysztof Panczyk and Jacek Ilczuk 2002 The right of Krzysztof Panczyk and J acek Ilczuk to be identified as the authors of this work has been asserted in accordance with the Copyright, Designs and Patents Act 1988. All rights reserved. This book is sold subject to the condition that it shall not, by way of trade or otherwise, be lent, re-sold, hired out or otherwise circulated in any form of binding or cover other than that in which it is published and without a similar condition including this condition being imposed on the subsequent purchaser. A copy of the British Library Cataloguing in Publication data is available from the British Library. ISBN 1 901983684 DISTRIBUTION:

Worldwide (except USA): Central Books Ltd, 99 Wallis Rd, London E9 5LN. Tel +44 (0)20 8986 4854 Fax +44 (0)20 8533 5821. E-mail: [email protected] USA: BHB International, Inc., 302 West North 2nd Street, Seneca, SC 29678, USA. For all other enquiries (including a full list of all Gambit Chess titles) please contact the publishers, Gambit Publications Ltd, P.O. Box 32640, London W14 OJN. E-mail: [email protected] Or visit the GAMBIT web site at http://www.gambitbooks.com Edited by Graham Burgess Typeset by John Nunn Printed in Great Britain by The Cromwell Press, Trowbridge, Wilts.

10 9 8 7 6 5 4 3 2 1

Gambit Publications Ltd Managing Director: GM Murray Chandler Chess Director: GM John Nunn Editorial Director: FM Graham Burgess German Editor: WFM Petra Nunn

Contents Symbols Introduction I 2 3 4 5 6 7 8 9 10 II

Rare 7th Moves for White 7 i.xf6 7 cxd5: Introduction and Minor Lines 7 cxd5 lDxd5 including 8 'ii'd2 1D7b6 7 cxd5 lDxd5 8 'ilVd2 i.b4 7 lDd2: Introduction and Minor Lines 71Dd2 dxc4 7 lDd2 i.b4: Minor Lines 7 lDd2 i.b4: Main Line (8 'iVc2 0-0) White Avoids the Cambridge Springs: Minor Lines White Avoids the Cambridge Springs: Exchange Variation with i.g5

Index of Variations

4 5 10 20 38 53 68 82 90 107 132 162 177 191

Symbols + ++ # !!

!? ?! ? ??

+± ;t = 00

+ =+=

-+ Ch Cht Wch

check double check checkmate brilliant move good move interesting move dubious move bad move blunder White is winning White is much better White is slightly better equal position unclear position Black is slightly better Black is much better Black is winning championship team championship world championship

Wcht Ech Echt ECC Ct IZ Z OL jr worn rpd tt sim corr. adv 1-0

112-112 0-1 (n) (D)

world team championship European championship European team championship European Clubs Cup candidates event interzonal event zonal event olympiad junior event women's event rapidplay game team tournament game from simultaneous display correspondence game advanced chess (man + machine) the game ends in a win for White the game ends in a draw the game ends in a win for Black nth match game see next diagram

Introduction Historical Outline

w

The Cambridge Springs Variation (1 d4 d5 2 c4 e6 3 liJc3 liJf6 4 ..tg5 liJbd7 5 lZJf3 c6 6 e3 ..wa5) appeared on the chess scene at the end of the 19th century, the first time in the game HodgesEm.Lasker, New York simul 1892, where the opening went 1 liJf3 d5 2 d4 lZJf6 3 c4 e6 4 ..tg5 liJbd7 5 e3 c6 6 liJc3 ~a5 7 ..txf6 gxf6 8 a3 dxc4 9 ..txc4 ~h5. Then the variation was sporadically played in later tournament practice, for instance in the games Burn-Schiffers, Berlin 1897, and Walbrodt-Tarrasch, Vienna 1898. The system is sometimes named the Pillsbury Variation. However, the diagram position, which is regarded as the basic starting position of the Cambridge Springs, never occurred in Pillsbury's games. He played only one game with Black in a similar line, i.e. with ... ~a5 made a move earlier, and one similar line with White: 1 d4 d5 2 c4 e6 3 liJc3

liJf6 4 ..tg5 c6 5 e3 ~a5 6 .txf6 gxf6 7 a3 liJd7 8 c5 e5 Reggio-Pillsbury, Monte Carlo 1903; 1 d4 d5 2 c4 e6 3 liJc3 lZJf6 4 ..tg5 c6 5 e3 ~a5 6..txf6 gxf6 7 a3 liJd7 8 lZJf3 dxc4 9 ..txc4 liJb6 10 ..td3liJd5 Pillsbury-Janowski, Budapest 1896. The tournament held in Cambridge Springs 1904 was a turning-point for the system since several games were played between top-level players ofthe day. Ever since this tournament, which was held in a spa town in Pennsylvania, the variation has appeared frequently in tournament practice. In the subsequent years it became quite popular, and was used by such players as Teichmann, Mieses, Alapin, Rubinstein, Przepiorka, Em. Lasker, Chigorin, Marshall, Reti, Capablanca, Schlechter and Tarrasch. Its period of greatest popularity was the 1920s and 1930s, when it occurred in a number of world championship matches. Alekhine used it in his match against Capablanca in 1927, both players tried it in the match Alekhine-Bogoljubow in 1929, and in the later match in 1934 (but this time only Bogoljubow). Euwe successfully played it once in his 1935 match against Alekhine. Then the popularity of the variation gradually decreased. However, this was not due to its objective value but rather the fact that White usually played the Exchange Variation. Since the mid-1980s the Cambridge Springs has appeared in tournament

6

THE CAMBRIDGE SPRINGS

practice slightly more often but it is still a rare guest in duels between topclass players. We think that the reason may still be White's option of playing the Exchange Variation. However, it is possible for Black to reach a Cambridge Springs via a Semi-Slav moveorder: I d4 dS 2 c4 e6 3 lbc3 c6 4 lbf3 lbf6 (or one of several other moveorders to reach this position), meeting S i.gS with S ... lbbd7, though in this case he must also be ready to face S e3, leading to Meran or Anti-Meran systems. Also, if Black is willing to playa Nirnzo-Indian, he can use the moveorder 1 d4lbf6 2 c4 e6 3 lbf3 dS 4lbc3 lbbd7. If either of these move-orders is used, White can still play an Exchange Variation, but his king's knight is already committed to f3, which reduces his options somewhat. The greatest enthusiasts of the system were Bogoljubow and Spielmann, while in the modem era Smagin plays it regularly, and it can also be seen in games by such players as Kasparov, Ivanchuk, Yusupov, M.Gurevich, 011 and Smyslov. The Cambridge Springs provides rich scope for tactical possibilities as well as subtle strategic manoeuvres. Therefore we encourage all chess-players to incorporate it into their opening repertoire.

Strategic and Tactical Ideas The main strategic problem in the Queen's Gambit for Black is how to develop his queenside pieces, especially the light-squared bishop. After 1 d4 dS 2 c4 White threatens to take over the whole centre by playing cxdS. Black has several ways to respond. He can

play 2 ... dxc4 (the Queen's Gambit Accepted) in order to develop his bishop on b7 (normally after ... a6 and ... bS) or in some variations on g4. However, the defect of this solution is that White obtains control over the centre and in some lines can play e4 (even on the 3rd move). Moreover, unlike other variations, White can take the c4-pawn in one tempo (i.f1xc4, rather than, e.g., i.f1-d3xc4). Black can also try 2 ... c6 intending in the future ... i.fS or ... i.g4, or ... dxc4 followed by ... bS and ... i.b7, ... a6, ... cS (Slav, Semi-Slav). This continuation also has some drawbacks. The point is that in most lines Black cannot successfully develop his light-squared bishop on fS or g4 without first playing ... dxc4 (again giving ground in the centre) or spending further time with ... a6 because of the weakness of his b7pawn, which may be attacked by ~3. The move ... c6 also takes the c6-square away from the b8-knight. Both lines mentioned are naturally playable and have been used many times by top-class players across the decades. Nevertheless, the main continuation is still 2 ... e6. This move, though, restricts the c8-bishop's possibilities on the c8-h3 diagonal. Only if White plays cxdS unsolicited (the Exchange Variation) does the problem of the light-squared bishop disappear. In most variations of the Queen's Gambit Declined, Black seeks to solve these queenside development problems in one way or another. The most energetic is ... cS (the Tarrasch Variation). In order to achieve anything White must exchange pawns in the centre by cxdS, opening up the c8-h3 diagonal. Moreover, at the cost of an isolated dS-pawn,

INTRODUCTION

Black obtains active play and influence over the e4-square and the half-open c-tile. Unfortunately, since the world championship match Karpov-Kasparov, Moscow 1984/5 this variation has experienced a serious crisis. The Tartakower Variation embodies another idea: ... b6 followed by ... i.b7 (or ... i.e6 if White plays an early cxd5). Further examples may be ... dxc4 followed by ... ttJd5 preparing ... e5 opening the c8-h3 diagonal or ... c5 followed hy ... b6 or ... a6 and ...b5 (the Orthodox Variation), or exchanging off the king's knight by ... ttJe4 followed by similar ideas (Lasker Variation). In all these cases Black stands on the border between an equal position and a small advantage for White in most lines, often without any chances to fight for victory. On the other hand, such lines as the Semi-Slav (especially the Botvinnik System) and the Vienna Variation lead to very complicated play and have been analysed in great detail, in some variations beyond the 30th move. The players are required to play the whole game in a heightened state of tension. Every decision is critical and the play is very forcing. This is accompanied by the risk that one powerful novelty in a critical line might make the whole system worthless. The Cambridge Springs is a counterattack on the queenside. Black plans ... i.b4 and ... ttJe4 attacking the c3knight, which cannot be defended by White's dark-squared bishop. Here is one typical trap: 1 d4 d5 2 c4 e6 3 ttJc3 ttJC64 i.g5 ttJbd7 5 ttJC3 c6 6 e3 'iVa5 7 'iVc2 ttJe4 S i.d3?? (D).

7

B

S••. ttJxg5 9 ttJxg5 dxc4 10 i.xc4 'ii'xg5 and Black has won a piece. Another famous blunder when White opts to transpose to an Exchange Variation is 1 d4 d5 2 c4 e6 3 ttJc3 ttJC6 4 i.g5 ttJbd7 5 cxd5 exd5 6 ttJxd5?? (D).

B

6..•ttJxdS 7 bdS i.b4+ S 'ii'd2 ~dS and again White has shed a piece. A typical way for White to go astray in the Cambridge Springs is 1 d4 d5 2 c4 e6 3 ttJc3 ttJC6 4 i.g5 ttJbd7 5 ttJf3 c6 6 e3 'ii'a5 7 i.xf6 ttJxf6 S a3 ttJe4 9 ':'cl ttJxc3 (D). 10 ':'xc3? i.xa3, Krstev-Mihajlovski, Skopje 1998.

8

THE CAMBRIDGE SPRINGS

w

In many lines Black experiences some problems developing his c8-bishop, but often he gains the bishop-pair or even a pawn in return for this inconvenience. The play can then become very interesting. The main practical drawback of the Cambridge Springs is that in order to reach it, Black gives White the option of playing an Exchange Variation where Black's queen's knight is committed to d7.

1 d4 d5 2 c4 e6 3 4Jc3 4Jf6 4 i.g5 4Jbd7 54Jf3 c6 6 e3 'iVa5 (D)

w

In this basic position White can undertake various measures against the pin. The most principled, consistent

and energetic move seems to be 7 cxd5 (Chapters 3-5) intending to take advantage of Black's early queen move, often by sacrificing a pawn. It appeals to those who prefer active, forcing play. After this move Black must make a very important decision. After 7 ...cxdS Black is very passive, while 7 ... exd5 results in an Exchange Variation where the black queen is committed to the a5square. With accurate play, White can show the queen to be misplaced. That leaves two knight moves; 7... 4Je4 and 7 ... 4Jxd5. The former is a spirited gambit that leads to sharp play and requires an accurate response from White, but ultimately does not appear to be adequate for Black. 7 ... 4Jxd5 is the main line, and its assessment is critical for the overall assessment of the Cambridge Springs. After White's standard reply 8 'iVd2, the current status of the theory suggests to us that the older 8 ... 4J7b6 (Chapter 4) is more reliable than the more popular 8 ... i.b4 (Chapter 5). Nowadays 7 cxd5 yields precedence to 74Jd2. In this way, White avoids the risk of a pawn sacrifice and lessens the effect of Black's pin on the a5-e 1 diag0nal: Black's active ideas ... dxc4 and ... 4Je4 are both parried. White's aim is to stabilize the position and secure a modest spatial plus upon which he can build in the middlegame. However, the knight retreat also has its weak points: it does nothing to enhance White's development, leaves the g5-bishop undefended, and gives Black ideas involving ... e5. In many cases, even if White does obtain his small advantage, it is very difficult to make any progress since Black has no weaknesses and is

INTRODUCTION

very solid. In general, we can say that 7 t/ld2 is a somewhat drawish continuation, although Black also has possibilities of counterplay in many lines. In contradistinction to present trends, we recommend 7 ... dxc4 (Chapter 7) rather than 7 ... .Ji.b4 (Chapters 8 and 9) as in our opinion Black can equalize only with the former. It seems that the simplest way for White to counter ... 'it'a5 and avoid being threatened by an attack on the g5hishop is by simply exchanging on f6, viz. 7 .Ji.xf6 (Chapter 2). However, while this solves the immediate tactical problems posed by 6... 'it'a5 and enables White to develop freely, the fact that White has given up the bishop-pair in exchange for relatively minor gains means that Black can easily equalize, and has some possibilities of opening the position to his advantage.

9

If White avoids the main theoretical paths (7 .Ji.xf6, 7 cxd5 and 7 lbd2), Black has nothing to be worried about at all, and in many cases Black wins a pawn for zero or inadequate compensation, as we shall see in Chapter 1.

The book covers everything the reader needs to play the black side of the Cambridge Springs. In Chapters 19 we intend to provide comprehensive coverage, aimed at those who play either side of the Cambridge Springs. Chapters 10 and 11 provide repertoire coverage, from Black's viewpoint, of all the other lines of the Queen's Gambit that Cambridge Springs players need to know if White chooses to avoid the Cambridge Springs in one way or another. The most important of these alternative lines is the Exchange Variation.

1 Rare 7th Moves for White 1 d4 d5 2 c4 e6 3 ttJc3 ttJf6 4 .ig5 ttJbd7 5 ttJf3 c6 6 e3 1\fa5 (D)

followed by cxd5 can White count on equality. Let's see some interesting tactical motifs:

This chapter covers all of White's alternatives to 7 .ixf6, 7 cxd5 and 7 ttJd2. These minor options give Black nothing to be worried about; the positions that arise are pleasant for Black, and only White has to fight for equality. In many cases Black wins a pawn (by exchanging on c3). However, the long -term practical effect of the capture in the game is an entirely different issue. Victory is sometimes very difficult. A fixed pawn-structure, problems with development of Black's light-squared bishop and activity of White's pieces go to make some compensation for the pawn. Nowadays, these variations are not popular and their sporadic appearances in tournaments are usually an effect of a lack of theoretical knowledge of chessplayers. Only after 7 'iWc2 and 7 :tel with an extra defence of the c3-knight

White saves the piece by 10 'iVb3! thanks to the attack on the b4-bishop. After 1O... ttJa2+ 11 axb4 'i¥xb4+ 12 'i¥xb4 ttJxb4 White has enough compensation for the pawn. Two other strategic ideas are shown in Lines D 1 and D2:

B

RARE 7TH MOVES FOR WHITE

After 9 ... ltJb6 White is forced to exl'hange one of his bishops after 10 iLd3 dXl'4 or 10 iLc7 Wd7 as both 10 cxdS (ilxdS and 10 cSltJa4 are profitable for Black.

/I

The aggressive 8... gS!? 9 iLg3 hS 10 hlltJxg3 11 fxg3 '¥IIc7 leads to a better game for Black.

1 d4 d5 2 c4 e6 3 ltJc3 ltJf6 4 iLg5 lilbd7 5 ltJf3 c6 6 e3 '¥IIa5 Now: A: 7 c5?! B: 7 iLd3?

C: D: E: F:

7a3 7 iHb3 7

net

7~c2

11 12 13 14 16 16

White loses a pawn following other moves: a) 7 ~a4 'iVxa4 8ltJxa4 dxc4 9ltJc3 (9 iLe2ltJe4 10 0-0 bS +; 9 iLxf6ltJxf6 10 ltJd2 iLb4 11 a3 iLaS + MessinTimar, Budapest 2000) 9 ...bS 10 iLe2 (10 a4 iLb4 11 ltJd2 iLxc3 12 bxc3 ltJdS +; 10 g3 i.b4 11l:!.c1ltJdS 12 e4 ltJxc3 13 bxc3 iLa3 +; 10 a3ltJdS 11 e4 ltJxc3 12 bxc3 f6 13 iLe3 iLb7 14 iLe2

11

cS -+ Rychlik-Kurpiewski, Ciechanow 1976) lO ... iLb4 11 0-0 i.xc3 12 bxc3 ltJe4 + EI-Mezwaghi-Mubarak, Novi Sad OL 1990. b) 7 'iVd2 iLb4 8 iLxf6 (8 iLd3 ltJe4 {8 ... dxc49 iLxf6 ltJxf6 10 iLc2 ltJdS 110-0 ltJxc3 12 a3ltJdS 13 axb4 '¥IIxb4 +} 9 i.xe4 dxe4 10 ltJeS ltJxeS 11 dxeS 0-0 12 0-0 '¥IIxeS 13 iLf4 i.xc3 +) 8... ltJxf6 9l:!.clltJe4 10 '¥IIc2 '¥IIxa2 11 iLd3 (11 cxdS iLxc3+ 12 bxc3 '¥IIxc2 13 l:!.xc2 exdS +) ll...ltJxc3 12 bxc3 'i!Vxc2 131:txc2 +Bimbaum-Bannasch, Keh11989. c) 7 iLe2 and now: c1) 7 ... i.b4 8 0-0 (8 'ii'c2 ltJe4 9 l':.c1 'iVxa2 10 0-0 iLxc3 11 bxc3 '¥IIxc2 12 ':xc2 + Filgueira-Botsari, Dubai worn OL 1986) 8 ... iLxc3 9 iLxf6 (9 bxc3 ltJe4 10 l:!.el, Neurohr-Smagin, Bundesliga 1990/1, 10... dxc4 11 i.f4 ltJxc3 12 'ii'c2 bS +) 9 ... ltJxf6 10 bxc3 dxc4 11 '¥IIc2 ltJdS 12 iLxc4 '¥IIxc3 13 'iVe2 'iVa3 14 l:!.fel 0-0 IS '¥IIc2 and White has some compensation for the pawn. c2) 7 ...ltJe4 8 0-0 ltJxc3 9 bxc3 '¥IIxc3 10 cxdS (10 cS, Raev-Manojlo, Artek 1999, lO ... eS 1ll:!.c1 'iVa3 12 '¥IIc2 f6 +) lO... exdS 11 l:!.c1 '¥liaS 12 'iVd3 (HjorthHill, Canberra 1987) 12 ... '¥IIxa2 13 ':al '¥IIc4 14 '¥IIdl '¥IIc3 -+. A)

7c5?! White closes the centre and radically stops Black pinning the c3-knight by ... iLb4. However, it relieves the central tension and lacks energy. Black can obtain a good game after 7 ... ltJe4 followed by action in the weakened centre by ...b6 or ... f6 followed by ... eS. 7•••ltJe4 8 iVb3!?

12

THE CAMBRIDGE SPRINGS

8 'ii'c2 b6 9 ~d3 (9 O-O-O? ~xc3 10 'ii'xc3 'ii'xa2 11 b4 bxc5 and Black wins, Mihalic-Vodopivec, Slovenian jr Ch 1993) 9 ... ~xg5 10 ~xg5 bxc5 and Black has an advantage. 8...f6 8 ... ~xg5!? 9 ~xg5 ~e7 10 ~f3 b6 11 cxb6 axb6 9 ~h4 b6 10 cxb6 axb6 11 i..d3 ~xc3 12 bxc3 e5 Black has a small advantage.

+.

B)

7 ~d3? (D) This move is an error, but Black must respond more precisely than is generally thought.

b) 8 'ii'a4? 'ii'xa4 9 ~xa4 ~b4+ (9 ... ~xg5 10 ~xg5 dxc4 11 i..e2 {II ~e4 h6 12 ~h3 ~f6 13 ~f3 ~b4+ + Schubert-WIrtz, corr. 1988-9} 1l...~b4+ 12 ~c3 b5 +Holtrup-Butze, corr. 1977) 10 rJi'e2 ~xg5 11 ~xg5 dxc4 12 ~c2 (12 i..xc4 b5 -+ Ebeling-Streich, Leipzig 1997) 12 ... i..e7 +. 8...dxe4 9 ~eS f6 9 ... ~xe5 10 dxe5 ~b4 11 0-00-0 12 ~xe4 'ii'xe5 13 'ii'd4!? ;t. 10 ~xd7 i..xd7 1O... 'ii'xg5 11 ~xf8 'ii'xg2 12 'ii'h5+ g6 13 ~xg6 'ii'xhl + 14 'it>d2 'ii'xal 15 ~xh8+ ~d8 (Schneider-Osthof, Germany 1992) 16 ~c2! gives White more than enough compensation for the exchange. 11~f4

Or 11 ~h4 h5 12 h3 ~b4 =. 11...hS 12 'iib3 0-0-0 In this position both sides have chances.

B

Now: Bl: 7...~e4 B2: 7...~b4 B3: 7 ••.dxc4!

12 12 12

B1) 7...~e4 ECO finishes its analysis here. 8 i..xe4 Other moves are weak: a) 8 cxd5? ~xc3 9 bxc3 'ii'xc3+ 10 ~e2 'ii'b2+ +Pierecker-Raffalt, St Veit 1998.

B2) 7••• ~b4 8 O-O!? Or 8 'ii'c2 ~e4 (8 ... dxc4 9 i..xc4 ~e4 10 'ii'xe4 ~xc3+ 11 bxc3 'ii'xc3+ 0-1 Nagel-Boone, Cleveland 1964) 9 i..xe4 dxe4 10 ~e5 (10 'ii'xe4 ~xc3+ 11 bxc3 'ii'xc3+ 12 ~e2 'ii'xc4+ +) 10... ~xe5 11 dxe5 'ii'xe5 + Panagopoulos-Bergqvist, Dubrovnik OL 1950. 8...i..xc3 9 bxc3 'iixc310:lel 'ii'a3 11 'ii'c2 h6 12 ~xf6 ~xf6 13 ~eS White has some compensation for the pawn.

B3) 7 ..•dxc4! The only move leading to a clear-cut advantage. 8 i..xf6

RARE 7TH MOVES FOR WHITE

8 i.xc4 ttJe4 9 i.h4 ttJxc3 lO bxc3 'ii'xc3+ leaves Black a pawn up. S..:ii'b4! 8... cxd3 9 i.h4 (9 i.eS, MaldonadoHalinas, USA 1995, 9.....a6 100-0 b6 II i.g3 .tb4 12 "b3 'ii'aS =l=) 9 ....ib4 10 'ii'xd3 b6 11 a3 (11 l:[c1? 'ii'xa2 12 'ji'c2 .ta6 +) 11....ia6 12 "d2 i.xc3 13 'ii'xc3 =. 9.txg7 After both 9 i.h4 "xb2 and 9 i.xc4 'ji'xb2 lO ttJe4 .ib4+ Black has a clear advantage. 9••. .txg7 10 .tc2 "xb2 White has no compensation for the pawn.

C) 7a3 White prevents 7... i.b4. Nevertheless, ... ttJe4 (both immediately and following 7... dxc4) gives Black good play. 7.•. ttJe4 (D) A good alternative is 7... dxc4 8 .ixc4 ttJe4 9 .if4 (9 b4 i.xb4 lO axb4 'ii'xb4 II 0-0 ttJxc3 12 "d3 ttJb6 13 ttJd2 0-0 +; 9 .th4 ttJxc3 10 'ii'd2 bS 11 .id3 b4 12 bxc3 bxc3 13 'ii'a2 l:[b8 =l=) 9 ...ttJxc3 10 'ii'd2 ttJf6 11 'ii'xc3 "xc3+ 12 bxc3 ttJe4 13 .td3 ttJxc3 when Black has an extra pawn, but it is hard to exploit it.

w

13

Now White has a wide choice of unsatisfactory continuations: Cl: S"c2 13 C2: S"c1 14 C3: Scxd5 14 Other moves: a) 8 b4? i.xb4 9 axb4 'ii'xb4 10 l:tc 1 ttJxc3 11 'ii'd2 ttJa2 -+ Scholz-Koch, Eisenberg 1993. b) 8 'ii'a4 'ii'xa4 9 ttJxa4 dxc4 (or 9... ttJxgS 10 ttJxgS dxc4 11 ttJc3 bS 12 i.e2 i.e7 13 ttJf3 a6 +) lO ttJc3 (lO i.f4 bS 11 ttJc3 ttJdf6 12 a4 i.b4 13 l:tc 1 ttJdS 14liJeS .id7 IS ~e2 ttJexc3+ 0-1 Komhard-Wiesemann, Dortmund 1993) lO ... ttJxc3 11 bxc3 bS 12 ~d2 (12 i.e2 .id6 13 0-0, Schlufter-Diehle, Lingen 1995, 13 ... f6!? 14 i.h4 ~e7 +) 12 ... i.e7 13 i.e2 i.xgS 14 ttJxgS h6 IS ttJe4 ~e7 + Alexandrova-Niubin, Moscow 1997. c) 8 l:[c1 dxc4 (8 ...ttJxgS 9 ttJxgS dxc4 lO ttJge4 {lO f4 h6 11 ttJge4 bS, Podzielny-Arendt, Ruhr 1996, 12 'iVf3 l:tb8 13 fS exfS 14 'ii'xfS =l=} lO...bS, Bauer-Gorka, Bensheim 1997, 11 "hS!? 'ii'c7 12 i.e2 i.b7 =l=) 9 i.h4 bS lO ttJd2 ttJxc3 11 l:txc3 i.b7 12 i.e2 cS +. d) 8 cS ttJxc3 9 'ii'd2 f6 (9 ... eS!? 10 ttJxeS ttJxeS 11 dxeS 'ii'xcs 12 "xc3 'ii'xc3+ 13 bxc3 h6 =l=) lO i.f4 (lO i.h4 eS 11 'ii'xc3 'ii'xc3+ 12 bxc3 + ThoszVoigt, corr. 1989) lO ... eS gives Black the better chances.

CI) S 'ii'c2 ttJxg5 Or8 ... i.b4: a) 9 l:tc1 i.xc3+ lO bxc3 'ii'xa3 (lO ... ttJxgS 11 ttJxgS dxc4 12 ttJe4 'ii'xa3 13 i.xc4 0-0 =l= Linn-Haas, Trier 1992) 11 cS (11 cxdS exdS 12 .if4 0-0

14

THE CAMBRIDGE SPRINGS

and Black is a pawn up, E.Kiss-Volkmann, Zalakaros 1995; 11 i.d3 liJxgS 12 liJxgS 'iie7 13 liJf3 dxc4 14 i.xc4 0-0 =1= Faiss-Hammes, Gennany jr 1989; 11 i.f4liJdf6 12liJd2liJxd2 13 'iixd2, Greifensteiner-Rutherford, Murek U16 girls Ech 1998, 13 ... b6 +) ll...eS (ll...b6 12 cxb6 axb6 13 i.f4 ii.a6 +) 12 i.h4 (Luger-Pentzien, COIT. 1989) 12 ... f6!? + with the point 13 i.d3? gS

-+. b) 9 i.h4 liJb6 lacs ii.xc3+ 11 bxc3 liJa4 12 ii.d3 'iixc3+ 13 'iixc3 liJexc3 =1=. 9liJxg5 dxc410 liJf3 b5 11 'iWc1 No better is 11 :cl i.b7 12 i.e2 i.e7 13 0-0 0-0 +Jacob-Becker, Badenweill99S. 11 ••.liJf6 12 liJd2 Mehrfeld-Zaerban, Bad Zwesten 1999. Black can play 12 ... ii.d7 13 ii.e2 ii.d6 +. C2) 8 'iic1 dxc4 (D) Or 8 ... liJxgS 9liJxgS dxc4 lO liJge4 (lO liJf3 bS 11 ii.e2, Hohmann-Hackbusch, Schoneck girls 1996, ll...cS 12 0-0 ii.b7 +; lO e4 ii.e7 11liJf3 bS 12 a4 'iib4 +) lO ... bS 11 i.e2 ii.b7 with a slight advantage to Black.

w

9 i.f4 b5 10 i.e2liJb6!? A very interesting move. Black controls a4 and at the same time threatens to attack c3 by ... liJa4. 10... liJxc3 11 bxc3 liJf6 (ll...liJb6 12 i.c7 'iia6 13 e4 ii.e7 =1=) 12 a4 bxa4 (12 ... 'iid8 13 liJeS ii.d7 = WalbrodtTarrasch, Vienna 1898) 13 ii.dl a3 gives Black a slight advantage. 11liJe5 Or 11 i.c7liJxc3 12 bxc3 'iia6 13 e4 i.e7 14 0-0 0-0 IS 'iie3 liJa4 with better chances for Black. 11•.•liJxc3 12 bxc3 liJa4 13 ii.h5 g6 14 i.f3 i.b715liJxc6 'iixc3+ 16 'iixc3 liJxc3 Black's chances are better. C3) 8 cxd5 liJxc3 Or 8... exdS 9 'iic1 (9 ii.f4 liJxc3 lO 'iid2 i.b4 11 :c1, Wiemer-Nelki, Germany 1994, 1l...'iWb6 12 axb4liJe4 13 'iic2 'iixb4+ +) 9 ... liJxgS lO liJxgS i.d6 11 ii.d3 'iid8 12 e4 i.e7 13 liJf3 dxe4 14 liJxe4 9 'iid2 i.b4 10:c1 'iixd5!? Less convincing is 10... liJxdS 11 axb4 'iixb4 12 e4 (12 'iWxb4 liJxb4, Weber-MOller, Gennany 1991, 13 ii.f4 as 14 i.d6 =) 12 ...'iixd2+ 13 ii.xd2 liJSf6 14 ii.d3 a6 IS ~e2 and White has compensation for the pawn. 11 axb4 liJe4 12 i.c4 liJxd2 13 i.xd5 exd514 ~xd2 a6 Black has a very good game.

=.

D) 7 'iib3 The queen defends additionally the c3-knight. The b3-square, though, is not the best one for the queen, and Black can count on an advantage.

RARE 7TH MOVES FOR WHITE

7••.ltJe4 8 ..tf4 (D) Other moves: a) 8 cxdS exdS (8 ... ltJxgS 9 ltJxgS exdS lO ..td3 h6 {lO.....te7 11ltJf3 0-0 12 0-0 .:te8 13 .:tfel =Kashdan-Spielmann, Bled 1931} 11 ltJf3 .id6 12 0-0 0-0 13 .ifS, Rusli-Hohler, Siegen OL 1970, 13 ... ltJb6 =) transposes to Line C2 of Chapter 3. b) 8..th4..tb4 9 :tc 1 and then: bl) 9... ltJxc3 lO bxc3 .ia3 (LenPitam, Tel-Aviv 2001) 11 :tbl dxc4 12 ..txc4 ltJb6 13 ..td3 ltJdS 14 ltJeS is slightly better for White. b2) 9 ... 0-0 lO .id3 cS 11 0-0 (11 a3 i.xc3+ 12 bxc3ltJb6 13 ..txe4 dxe4 14 ltJd2, Barwinski-Panczyk, Ciechanow 1976, 14... ltJd7 IS .:tdl fS 160-0 eS ;1;) 1l.....txc3 12 bxc3 ltJb6 13 .ixe4 dxe4 14ltJd2 ;1;. b3) 9...ltJb6 lO .id3 (10 a3?! .ixc3+ 11 bxc3 dxc4 12 'ili'b4 {12 .ixc4ltJxc4 13 iixc4 "ii'xa3 14 0-0 "ii'aS =+= LedgerBryson, Newcastle 1995} 12 ..."ii'xb4 13 cxb4 as is also much better for Black, Gruber-Havasi, Gyor 1924) lO ... dxc4 11 ..txc4 "ii'a4 (alternatively, ll...ltJxc3 12 bxc3 ..ta3 13 :tc2 ltJxc4 14 "ii'xc4 0-0 =) 12 ..td3 "ii'xb3 13 axb3 with equality, Rubinstein-Schlechter, Berlin 1918.

B

15

Now Black can play on either side of the board: Dl: 8.....tb4 IS D2: 8...g5!? 16 Or 8... ltJdf6 9 .id3 dxc4 lO ..txc4 (lO "ii'xc4 ltJxc3 11 bxc3, Brody-Von Bardeleben, Coburg 1904, 11...eS! 12 .i.xeS .ie6 13 dS ltJxdS =+=) lO ... ltJdS 11 ..txdS exdS 12 0-0 ..te7 = AppelI.Schmidt, St Ingbert 1987.

01) 8••...tb4 9 .:tctltJb6 Other moves: a) 9... ltJdf6 lO ltJeS (MackenzieMUller, London 1904) lO ... gS 11 .i.g3 hS 12 cxdS exdS 13 ltJd3 ltJxg3 14 hxg3 =. b) 9... b6 10 a3 (10 ..td3, BarczaNegyesy, Budapest 1936, and now lO ... ..ta6!? leads to a good position for Black) lO ... ..txc3+ 11 bxc3 .ia6 12 'ili'b4 .ixc4 13 'ili'xaS bxaS 14 .ixc4 dxc4 IS ltJeSltJxeS 16 .ixeS f6 17 .if4 eS 18 f3ltJcs 19 dxcS exf4 20 exf4 ltb8 c) 9... 0-0 lO .id3 and here: c1) lO ... cS 11 0-0 .ixc3 12 bxc3 ltJdf6 (Brock-Staudler, COIT. 1989) 13 :tc2 b6 14 ltJeS ;1;. c2) lO ... f5 11 0-0 ltJdf6 (OrbanMakai, Hajduboszormeny 1995) 12 ltJe2!? ..te7 13 a3 dxc4 14 .ixc4 ;1;. c3) 1O... dxc4 11 ..txc4ltJdf6 12 .id3 (Hawes-Bastian, Tbessaloniki OL 1984) 12 ... ltJxc3 13 bxc3 .ia3 14 .:tc2 ;1;. c4) lO... ltJdf6 11 0-0 ltJxc3 12 bxc3 .i.e7 13 cxdS cxdS 14 .ieS ;t. cS) lO ... ltJxc3 11 bxc3 .ia3 12 :tc2 dxc4 13 ..txc4 ;I; Sustek-Nahalka, Slovakian Ch 1996. 10..td3

16

THE CAMBRIDGE SPRINGS

Alternatives: a) 10 tDd7! 11 i.xb6 axb6 =. 10••. dxc4 11 i.xc4 tLld5!? Alternatively, 11 ... tLla4 12 0-0 .i.xc3 13 bxc3 (Fyllingen-Lahlum, Gausdal 1991) 13 ...tLlaxc3 14 ~c2 and White has more than sufficient compensation for the pawn. 12 0-0 tLlexc3 13 bxc3 i.a3 The game is equal. D2} 8•••g5!? This is a more ambitious move. It loosens Black's kingside a little, but the structural damage inflicted on White more than makes up for this. 9i.g3 9 i.e5 f6 10 i.g3 h5 11 h4 (11 h3 tLlxg3 12 fxg3 i.d6 13 -.t>f2 ~c7 14 tLle2 +) 1l...i.b4 12 a3 i.xc3+ 13 bxc3 tLlxg3 14 fxg3 9•••h510 h3 10 cxd5 exd5 11 0-0-0 tLlxc3 12 ~xc3 'ii'xa2 10••. tLlxg3 10... i.e7 (Mackenzie-Napier, London 1904) 11 i.h2 =. 11 fxg3 ~c7 Black has the better game.

+.

+.

E)

7 lIc1 (D)

Another defensive move. However, the rook is now no longer defending the a2-pawn. Black can win this pawn, but if he does not want to, he has no problems securing risk-free equality.

B

7 .••tLle4 8 cxd5 exd5 9 i.d3 9 a3 f6!? (after 9 ... tLlxg5 10 tLlxg5 ~d8 11 tLlf3 i.d6 12 i.d3 tLlf6 Black has solved all his development problems, Tomas-Rudolph, Hessen 1988) 10 i.f4 g5 11 i.g3 h5 12 h3 tLlxg3 13 fxg3 i.d6 +. 9... tLlxg5 9 ... tLlxc3 10 bxc3 ~xa2 11 0-0 tLlb6 12 e4 gives White compensation. 10 tLlxg5 tLlf611 0-0 h612 tLlf3 i.d6 The position is equal, PiechockiFiala, Gdynia 1987. F) 7~c2

On c2 the white queen defends the c3-knight and exerts pressure on the centre. 7.••tLle4 7 ... i.b4 will transpose to other lines: 8 tLld2 - 7 tLld2 i.b4 8 'ifc2; 8 i.xf6 tLlxf6 - 7 Lf6 tiJxf6 8 'ifc2 i.b4. The text-move possesses independent significance.

17

RARE 7TH MOVES FOR WHITE

8 cxd5 (D) White clarifies the situation in the centre since either retreat by the bishop leads to a loss of a pawn: a) 8 i.h4 i.b4 and now: al) 9:c1 'iVxa2 (9 ... ttJb6 10 cxdS cxdS 11 i.d3 ttJxc3 12 bxc3 i.a3 13 llbl i.d7 =+= Bulthaupt-Weiss Nowak, (jermany 1983) 10 .id3 (10 ttJd2 .ixc3 II bxc3 'iVxc2 12 Ihc2 + HoegerlBuechler, Germany sen 1996; 10 cxdS exdS 11 i.d3 .ixc3+ 12 bxc3 'iVxc2 13 llxc2 ttJdf6 +Goeth-Hora, Prague 1964) 1O ... ttJxc3 11 bxc3 'ii'xc2 12 ':xc2 .ie7 ( 12 ... i.d6, Oud-Mertins, Bad Wildbad 1993, 13 cS .ic7 +) 13 .ig3 (RackHendler, Bad Zwesten 1998) 13 ... dxc4 14 i.xc4 as +. a2) 9 ttJd2 ttJxc3 10 bxc3 i.xc3 11 ':bl (11 :dl, Stelzer-Gerstner, Kehl 1989, 11... bS!? 12 cxbS cxbS 13 i.d3 .ia6 intending ... b4 is much better for Black) l1...dxc4 (ll....ixd2+ 12 'iVxd2 'iVxd2+ 13 ~xd2 =+= Oppedal-Gardener, 1970) 12 i.xc4 eS 13 ':dl ttJb6 and Black has an advantage. b) 8 i.f4 .ib4 and then: bl) 9 l:tc1?! 'iVxa2 10 cxdS (10 i.e2 ttJxc3 11 bxc3 'ii'xc2 12 ':xc2 .ie7 +; 10 cS b6 11 .id3 bxcS, MitsakosCastellano, Las Palmas 1993, 12 i.xe4 dxe413 ttJd2 .ixc3 14 'iVxc3 'iVdS +; 10 i.d3 ttJxc3 11 bxc3 'iVxc2 12 ':xc2 i.e7 =+= Tchelebi-Oliveira, Munich OL 19S8) 10 ... exdS 11 i.d3 ttJxc3 (11...i.xc3+ 12 bxc3 'iVxc2 13 ':xc2 ttJdf6 +Thomsen-A. Christiansen, Aalborg 1995) 12 bxc3 "iixc2 13 ':xc2 .ie7 + KastinenHaanpaa, Tampere 1991. b2) 9 a3 i.xc3+ 10 bxc3 ttJxc3 11 ttJd2 ttJe4 12 .id3 ttJxd2 13 'iVxd2 'iVxd2+ 14 'it>xd2 f6 and White has some compensation for the pawn.

B

Now: Fl: 8....ib4 F2: 8.••ttJxg5 F3: 8•••exd5

17 18 18

Fl)

8•.. .ih4 Black steps up the pressure on c3. The e4-knight seems to be tactically defended by this, but White can in fact call Black's bluff. 9 'iVxe4!? Other continuations: a) 9':c1 exdS (9 ... ttJxgS 10 ttJxgS 'iVxdS was played in Hertneck-Clara, Bundesliga 1989/90, and now 11 ttJge4 'ii'xa2 12 ttJd6+ 'it>e7 13 ttJxc8+ ':'axc8 14 i.d3 is equal) 10 .id3 ttJxgS 11 ttJxgS h6 12 ttJf3 'ii'xa2 (12 ... 0-0 13 0-0, Szczesiak-Jablonski, corr. 1992, 13 ... l:te8 14 a3 =) 13 0-0 'iiaS 14 e4 (Abramson-Vucic, New York 1991) 14... dxe4 and the onus is on White to prove the correctness of his sacrifice. b) 9 dxe6 ttJxc3 10 exd7+ i.xd7 11 i.h4 (11 a3 ttJe4+ 12 ~dl.ifS 13 .id3 ttJxf2+ 14 'ii'xfl .ixd3 IS ttJeS .ig6 16 ttJxg6 hxg6 is equal, K.Steiner-Gatten, corr. 1990-2; 11 ttJd2 .ifS 12 .id3 i.xd3 13 'iVxd3, Wohlers-Botsari, Dortmund 1987, 13 ... ttJa414i.h4ttJxb21S

18

THE CAMBRIDGE SPRINGS

'iVe4+ ~d7 16 'ii'g4+ ~e8 17 'iVe4+ ~d7 with perpetual check) 11 ... ttJxa2+ 12 ttJd2 .i.f5 (or 12... 'iVd5 13 f3 .i.e6 14 ~f2 .i.xd2 15 'ii'xd2 0-0 16 .i.e2 a5 17 b3 ;1;;) 13 .i.d3 i.xd3 (13 ... i.xd2+ 14 'iVxd2 'iVxd2+ 15 'it.'xd2 i.xd3 16 ~xd3 ttJb4+ 17 ~c4 a5 18 e4;1;;) 14 'iVxd3 0-0 15 i.g3 l:.fe8 16 'iVc2 :ad8 17 0-0 ..txd2 18 b3 ttJb4 19 'iVxd2 and again White has a slight advantage. 9.•. .i.xc3+ (D)

it is not easy for Black to free himself from the pressure.

F2) 8...ttJxgS This is a very natural move, but there is the threat to h7 to consider. 9 ttJxgS exdS 10 ttJxh7 .i.e7 11 f4 11 i.d3 (Blocher-Spiegel, Vorarlberg 1996) ll...g6!? 12 .i.xg6 fxg6 13 'iVxg6+ ~d8 14 ttJg5 ttJf8 15 ttJf7+ (15 'iVg7 l:.h4) 15 ...~d7Ieads to very complicated play. 11 ...'iVd8 12 i.d3 ttJb6 130-0-0 The alternative 13 'iVf2 i.h4 14 g3 g6 15 ttJg5 i.xg5 16 fxg5 'iVxg5 leads to equality. 13... g614 ttJgS i.xgS 15 fxgS 'ii'xgS Black has a good position, Jasnikowski-Lobron, Bundesliga 1994/5. F3) 8...exdS (D)

10 'it>dl The best move. Weaker are: a) 10 bxc3 'iVxc3+ 11 'it.'e2 'ii'xal 12 'iVc2 (Bogoljubow-Van den Bosch, Bad Nauheim 1936) 12 ... ttJb613 dxc6 bxc6 14 ttJd2 i.a6+ 15 'it.'f3 0-0 =t. b) 10 'iti>e2 'ii'b5+ 11 ~dl 'iVxb2 12 l:.bl cxd5 13 'iVc2 'ii'xc2+ 14 'it.'xc2 i.a5 15 .i.d3 i.c7 16 i.h4 10...cxdS After 10... ..txb2 White can fight for the advantage by both 11 l:.bl cxd5 12 'ii'c2 h6 13 ..th4 g5 14 i.g3 ..ta3 15 i.c7 ;I;; and 11 dxe6 'ii'a4+ 12 'iti>el 'ii'a5+ 13 ttJd2 'iVxg5 14 exd7+ 'iti>xd7 15 l:tdl ;1;;. 11 'ii'c2 .i.b4 12 i.d3 White has a small advantage. Despite the symmetrical pawn-structure,

+.

This simple move is solid and satisfactory. 9..td3 Otherwise White loses a pawn: a) 9 i.h4 ..tb4 10 ttJd2 (10 :c1, Toefferl-Tamegger, St Veit 1995, may be met by 1O... 'ii'xa2 =t) 1O... ttJxc3 11

RARE 7TH MOVES FOR WHITE

hxd ii.xc3 12 l:tdl (Verdihanov-Babaeva, Moscow 1991) 12... cS is much heller for Black. h) 9 ii.f4 ii.b4 10 a3 (10 ':'cl 'ili'xa2 I Zita-Becker, Buenos Aires OL 1939) 10 ... ii.xc3+ 11 bxc3 'ili'xc3+ 12 'ili'xc3 li\xc3 13 ii.d3 tLle4 gives Black an exI ra pawn, but it is hard to exploit. 9... tLlxg5 Other moves: a) 9 ... fS 10 .i.f4 (10 0-0 ii.d6 11 J:t.ael 0-0, Marshall-Bum, Barmen 1905, 12 l:tfel l:te8 13 .i.f4 ii.xf4 14 exf4 is slightly better for White) 1O... .itb4 11 0-0 0-0 12 a3 .i.xc3 13 bxc3 with the better game for White, Hodges-Barry, (:ambridge Springs 1904. b) 9 ... tLldf6100-0(interestingis 10 .lth4 ii.d6 11 0-00-0 12 tLld2 tLlxd2 13 ~xd2, when Black's pieces occupy slightly awkward positions) 1O ... tLlxgS II tLlxgS 'ili'd8 12 l:tael h6 13 tLlf3 .ltd6 = Iasnikowski-Matlak, Polish Ch 1992. 10 tLlxg5 h6 11 tLlf3 .itd6 12 0-0 12 l:!c1 0-0 13 0-0 tLlf6 = TuroverMarshall, Bradley Beach 1929. 12••• tLlf6 (D) After 12... 0-0 White has slightly more chances of obtaining an initiative, but Black's position is playable; c.g., 13 e4 tLlb6!? (13 ... dxe4 14 tLlxe4 ii.e7;t Knaak-Atanasov, Leipzig 1973) 14 eS ii.e7.

13a3

19

w

Alternatives: a) 13 tLla4 0-0 14 tLlcs (MicheelE.Schwarz, Bundesliga worn 1993/4) 14 .. :ii'c7 IS h3 as =. b) 13 tLleS ii.xeS 14 dxeS tLlg4 IS ii.fS tLlxeS 16 .itxc8 l:Ixc8 17 'ii'fS 'iIIc7 +Barberi-Rossi, Corsico 1996. c) 13 h3 'ii'c7 14 IUc1 a6 IS :abl (1S a4!? intending as) IS ... 0-0 16 b4 'ili'e7 17 a3 (Reinhardt-Letelier, Buenos Aires 1946) 17 ... as gives Black a slight advantage. d) 13 :fc1 ii.g4 14 tLld2 0-0 IS tLlb3 'ili'b6 16 h3 ii.c8 17 tLle2 ':'e8 18 tLlc3 =. 13... 0-0 14 .:tfel 'iIId8 15 tLla4 :e8 16 b4 'ili'e7 17 tLle5 The game is equal. None of the lines in this chapter can be recommended for White, though after 7 :c1 and 7 'ii'c2 (and possibly 7 'ili'b3) he is not actually worse.

2 7

~xf6

1 d4 d5 2 c4 e6 3 lDc3 lDf6 4 i.g5 lDbd7 5 lDf3 c6 6 e3 'iia5 7 i.xf6 This straightforward exchange is the simplest way for White to counter ...'iia5 and avoid being threatened by an attack on the g5-bishop. Indeed, White can now calmly develop his pieces, while Black still has some problems with his light-squared bishop. The pin on the c3-knight is not yet a serious threat. Black has only one knight, so the manoeuvre ... lDb6-a4 is not available to him. Unfortunately, a disadvantage of this move is the loss of the bishoppair. This, without a doubt, solves the immediate problems caused by 6...'iia5, but not in the longer run. In general, Black does not have any problems maintaining equality. 7 •••lDxf6 (D) After 7 ... gxf6 8 a3 (8 cxd5 cxd5 9 i.d3, Kieseritzki-Rubinstein, Barmen 1905, 9 ... i.b4!? ;1;) 8 ... dxc4 9 i.xc4 'iVh5 (9 ... l1g8!?) 10 i.e2 'iih6 11 g3 i.e7 12 'iic2 b6 (Hodges-Em.Lasker, New York 1892) 13 l:.dl White has an advantage. It is worth making a few general comments about Black's possible ideas after 7 ...lDxf6. He has a number of good plans: the first idea is ... lDe4 (especially after 8 c5 and 8 a3). Another important plan for Black is to play ... i.d6 intending ... e5 or ... dxc4 followed by ... e5 (best after 8 'ikb3, 8 'iic2 and 8 lDd2), all the more that there is always a threat of opening the position

w

by Black (an aggressive bishop-pair). The third plan is ... i.b4, when the play often transposes to other variations. Worth mentioning is Line F32, which is a combination of ... i.b4 and ... b6. The position of the d2-knight (making lDe5 impossible) offers Black easy equality. Nowadays, this variation is a very rare guest in tournament practice. Now we discuss: A: 8c5 21 B: 8 'iVb3 22 C: 8 'ii'c2 23 D: 833 24 E: 8 i.d3 25 F: 8lDd2 30 Other moves are less popular: a) 8 'iia4? 'iVxa4 9 lDxa4 dxc4 10 lDc3 (10 lDe5 b5 11lDc5 {lllDc3 i.b7 +} 1l...i.xc5 12 dxc5 lDd7 13 lDxd7 i.xd7 and White has no compensation for the pawn) 10...b5 11 i.e2 (11lDe5 i.b7 12 i.e2 {12 a3 a613 0-0-0 c5 -+} 12... a6 13 a4lDd5 +) 1l...i.b7 12 0-0

7 ( 12 lDd2 l:.b8 13 i.f3 c5 +) 12... a6 13 a4 i.d6 and Black is a pawn up. b) 8 i.e2 and then: b I) 8 ... dxc49 i.xc4 - 8 i.d3 dxc4 9 iLxc4. b2) 8 ...1De4 9 'iib3!? (9 l:.cl?! lDxc3 10 bxc3, Wegerer-Raffalt, Graz 1993, 10 ... ~xa211 0-Odxc412l:.al 'iVb313 ~d2 ~b6 14 i.xc4 +; White does not have full compensation for the pawn) l) .. . i.d6 10 0-0 lDxc3 11 bxc3 0-0 12 c5 i.e7 13 c4 b6 14 cxd5 exd5 15 l:.fcl i.d7 =. b3) 8... i.b4 9 'iib3 (9 'iVc21De4 10 0-0 {10 l::tc 1 'iVxa2 +Miindle-Shadick, NoviSadOL 1990} 1O... i.xc311 bxc3 ~xc3 12 'iibl 'iVa5 and Black is a pawn up) 9... dxc4 10 i.xc4 (10 'iVxc4 0-011 0-0 %:td8 12 a3 i.d6 =) 10...1De4 l1l:.cl <1'lxc3 12 bxc3 i.d6 13 l:.dl 0-0 14 e4 h5 15 i.d3 e5 16 dxe5 i.e6 (16 ... i.c5 17 0-0 i.e6 18 c4 l:.ad8 with compensation) 17 'iVc2 and now both 17 ... i.c7 and 17 ... i.c5 !?, intending to continue ... i.g4, give Black good compensation for the pawn. c) 8 cxd5 exd5 transposes to Line C3 of Chapter 3. d) 8 l:.cllDe4 (8 ... i.b4 9 'iib3 {9 a3 i.xc3+ 10 bxc3 'ii'xa3 + LeenhoutsNajditsch, Rimavska Sobota U-12 Ech 1996} 9 ... b5 10 cxb5 cxb5, MiillerMallow, Goch 1995, 11 a3 i.xc3+ 12 ~xc3 ~xc3+ 13 l:.xc3 i.d7 14 i.d3 t. / ±) 9 ~b3 (D) (9 ~c21Dxc3 10 bxc3 b6 I I i.d3 i.a6 12 lDd2 f5 13 0-0 i.a3 =) and here: dl) 9 ... i.e7 10 a3 (the alternative 10 i.d3 lDxc3 11 bxc3 dxc4 12 i.xc4 0-0 13 0-0 gives White a minimal advantage, Klevenow-Uhlemann, Bundesliga worn 1993/4) 1O... l:.b8 11 i.d3 dxc4 12 ~xc41Df6 (12 ...lDxc3 13 ~xc3

Lf6

21

B

t.) 13 'ii'a4 'ii'xa4 14 lDxa4 is slightly better for White. d2) 9... lDxc3 10 bxc3 i.d6 (after 1O... 'ii'a3 IIl:.bl ~xb3 12 axb3 i.e7 13 i.d3 Black has a cramped position but no weaknesses; White is only slightly better, Pollok-Hermann, Bargteheide 1988) 11 i.d3 b6 12 e4 (12 cxd5 exdS 13 0-0 i.g4 {13 ... i.e6!?} 14 c4 i.xf3 15 gxf3 dxc4 16 ~xc4 i.xh2+ with a perpetual check) 12... i.f4 13 l:.bl dxe4 14 i.xe4 i.d7 150-00-0 with an equal position. A)

8 c5 (D)

B

This space-gaining move is rarely a good idea in the Queen's Gambit, but

22

THE CAMBRIDGE SPRINGS

here White hopes that the black queen's position on a5 will justify it. 8•••liJe4 Alternatively: a) 8... 'ilYd8 9 i.d3 i.e7 10 0-0 0-0 11 b4 b6 12liJeS i.b7 13 .:tbl .:tb8 14 'ilYc2 and White's extra space gives him the better chances. b) 8... i.e7 9 i.d3 (9 'ilYa4 'ilYxa4 10 liJxa4, Klemens-Dzwonkowski, COIT. 1992, 10... i.d8!? 11 b4 bS 12 liJc3 as!? 13liJxbS cxbSI4i.xbS+liJd71S i.c6 :a6 16 bS :xc6 17 bxc6liJb8 18 :blliJxc6 '+) 9 ... 0-0 10 'ilYc2 (Theuermeister-Damm, Chemnitz 1998) 1O... b6 llliJeS bxcS 12liJxc6 'ilYc7 13liJxe7+ 'ilYxe7 14 dxcS 'ilYxcs with an equal position. c) 8 ...b69 liJeS (9 'ilYa4!? 'ilYxa4 10 liJxa4 liJe4 11 b4 bS 12 liJb2 as 13 bxa5 :xaS 14 a4 =) 9 ... bxcS 10 liJxc6 'i*'b6 11 dxcS i.xcS (Applebee-Sander, USA 1990) 12 'ilYc2 0-0 13liJa4 i.b4+

+. 9 'ilYb3 Or: a) 9 'irc2 (Astengo-Marelli, Corsico 1992) 9 ... liJxc3 10 bxc3 b6 11 cxb6 axb6 12 i.d3 cS 13 0-0 c4 is slightly better for Black. b) 9 'ilYa4!? 'ilYxa4 10 liJxa4 g6 11 i.d3 fS 120-0 (12liJeS I?) 12 ... i.g7 13 :abl gS =. 9••• b6 9 ... f6 10 i.d3 liJxc3 11 bxc3 eS 12 dxeS fxeS 13liJxeS i.xcs 14 'ilYc2 'ilYc7 IS liJf3 g6 160-00-0 17 c4 'ilYe7 18 cxdS cxdS =. 10 liJe5 Robles Sanchez-Barranco Sanz, Barcelona 2000. Black can now continue 1O... i.b7 11 i.d3 liJxc3 12 bxc3 f6 13 liJf3 eS 14 dxeS fxeS ISliJxeS 'ilYxcs 16

liJf3 (16.:tel 'ira3 17 'ilYc2 i.d6 18liJf3 i.a6 19 i.xa6 'ii'xa6 =) 16 ... g6 170-0 i.g7 18 :ael 0-0 19 c4 'ilYe7 20 cxdS cxdS 21 :c2 :ac8 =. B)

8 'ii'b3 (D)

B

White defends his knight and puts some pressure on b7. However, this poses Black few problems. 8...i.d6 The simplest path to equality is to make the ... dxc4 exchange and the ... eS break. Other moves: a) 8 ... i.e7 9 i.d3 0-0 10 0-0 (10 liJeS, Frydman-Thomas, Ujpest 1934, 1O ... cS 11 cxdS exdS 12 dxcS i.xc5 13 0-0 'irc7 14liJf3 =) 1O ...:d8 (1O ... :b8 llliJeS i.d6 12 f4 t Hicker-Rozentalis, Liechtenstein 1996; 10... 'ilYb6, GrossIvankovic, Richmond 1999, 11 'ilYxb6!? axb6 12 liJeS gives White a slight advantage) 11 :ael liJd7 12 cxd5 (12 :fdl t / =) 12... exd5 13 'ilYc2 (MichellSpielmann, Marienbad 1925) 13 ... liJf6 with equality. b) 8... liJe4 9 i.d3 liJxc3 (9 ... dxc4 10 'irxc4 liJxc3 11 bxc3 i.e7 12 i.e4 0-0 13 0-0 t / = Gonzalez-Castellano, Las Palmas 1993) 10 bxc3 i.d6!? (the

7 IIltl'l'IIatives are 1O... g6 11 0-0 i.g7 12

Lf6 C)

l:[lIh 1 0-0 13 %lfel ;1; Udovcic-Ciric,

Tilov() Uzice 1966 and 1O... i.e7 110-0 'ike7 12 .:tabl 0-0 13 'ii'c2 ;1; MichellThomas, Hastings 1934) 11 l:r.bl (11 cS ~.l"7 12 0-0 b6 13 cxb6 axb6 14 c4 i.d7 = with the point IS cxdS exdS) 11... h6 12 0-0 i.a6 13 e4 dxe4 14 i.xe4 %:.c8 =. r) 8 ... i.b4 9 a3 i.xc3+ 10 'iixc3 ~xd+ 11 bxc3 b6 12 cxdS (12 i.d3 i.a6 13 lZJd2 h8 White has compensation for the exchange; e.g., 16 'ife6 i.g4 17 'iie7 nab8 (17 ....:tac8 18 h3 i.hS 19 i.xhS t/)xhS 20 'iigS
23

8 'iic2 (D)

B

Here the queen defends e4 and aims at Black's kingside. However, Black has plenty of ways to secure a satisfactory game. 8...i.d6 There are some other good options: a) 8 ... i.b4 9 lZJd2 - 7 lZJd2 i.b4 8 hf6lZJxf6 9 'iVc2. b) 8 ... lZJe4 9 i.d3 (9 lZJd2 lZJxc3 {9 ... lZJxd2 10 'ii'xd2 i.b411 i.d3 0-0 = Colon-Beyen, Siegen OL 1970} 10 bxc3 i.d6 11 i.d3 h6 12 e4 dxe4 13 lZJxe4 i.c7 =) and then: bl) 9 ... fS 10 0-0 i.d6 (1O ... i.e7, H.Schmidt-Laux, Bad Wildungen seniors 1998, 11 .l:.fcl!? 0-012 a3 i.f613 b4 'iid8 14 lZJeS ;1;) 11 a3 0-0 12 b4 'iid8 13 lZJeS ;1; Stojnic-Zorman, Bled 1994. b2) 9 ... lZJxc3 10 bxc3 g6 11 0-0 i.g7 12 cxdS (12 e4 dxe4 13 i.xe4 0-0 = Folkhard-Wasnetsky, Mannheim 1990) 12... exdS 13 c4 dxc4 14 i.xc4 0-0 and Black has a playable position. c) 8 ... i.e7 9 i.d3 dxc4 10 i.xc4 cS (1O ... bS, Lauret-Rabascall, La Reunion 1997,11 i.d3;1;) 110-0 (11 i.bS+ i.d7 12 i.xd7+ lZJxd7 13 0-0 cxd4 14lZJxd4

24

THE CAMBRIDGE SPRINGS

=) 11...0-0 12 dS (12 lIfcl cxd4 13 ltJxd4 .i.d7 = Wissemborski-Mtiller, Bingen 1991) 12...exdS 13 ltJxdSltJxdS 14 .i.xdS (Tartakower-Kmoch, San Remo 1930) 14... 'iib61SlIfdl.i.e6=. 9 .i.d3 dxc4 Or 9... 0-010 0-0 (10 cS!? i.b8 11 a3 h6 12 0-0 'iIIc7 13 lIfel ltJd7 14 e4 ;t) 1O... dxc4 (10 ... h6 11 l:tac1 i.d7, Klafki-Schuhen, Koblenz 1990, 12 cS!? i.e7 13 b4 "ilic7 14ltJeS;t) 11 .i.xc4 eS (11 .. :ikc7 12ltJe4ltJxe4 13 'ikxe4 "iliaS 14ltJeS;t) 12 dxeS .i.xeS 13 b4 "ilic7 is equal, Villavicencio-Lopez, Gran Canaria 1989. 10 .i.xc4 e5 11 dxe5 .i.xe512ltJxe5 'ikxe5 13 0-0 0-0 The position is equal, Lopez Colon-Rojo Gomez, Spanish Cht 1993.

D) 8 a3 (D)

B

dxeS ltJg4, Bondarevsky-Estrin, Moscow 1946, 14 .i.e2ltJxeS IS 'ikd4 'ikf6 16l:tdl 0-0 17 e4 "iligS18 g3ltJc419f4 ±) 11 0-0 (11 "ilic2 lIe8 12ltJeS .i.xeS 13 dxeS ltJd7 14 b4 ;t) 11..."ilic7 12 ltJeSltJd7 13 f4 (Keckeisen-lanke, ledesheim 1991) 13 ... g6 14ltJxd7 "ilixd7;t. b) 8 ... dxc4 9 .i.xc4ltJe4 (or 9 ... cS, Motoc-Barashianth, Rimavska Sobota U-12 girls Ech 1996, 10 lIc 1!? i.d7 11 "ilib3 i.d6 12 dxcS "ilixcs 13 0-00-0 14 :fdl ;t) 10 'ii'b3 i.d6 (10 ... ltJxc3 11 bxc3 bS 12 i.d3 i.d6 13 0-0 0-0 14 "ilic2 h6, Binder-Majdanics, Gyongyo 1998, IS l:ttbl ±) 11 .i.d3 ltJf6 120-0 0-0 13 l:tfd 1 "ilihS 14 ltJe2 ;t. c) 8 ... .i.e7 9 b4 (Voelz-Weiss, corr. 1983) 9 ..."ilic7 10 'ilia4 (10 cSltJd7 intending ... eS =) 10... 0-0 (1O ... dxc4!? 11 i.xc4 i.d7 and after the queen retreats Black will play ... 0-0 and ... as) 11 cS bS 12 "ilidl as 13 .i.d3ltJg4!? 14 h3 (14 'iIIbl axb4 IS axb4 lIxal 16 'ikxal eS 17 h3 e4 18 hxg4 exd3 =) 14... ltJh6 IS 0-0 fS =. Now (after 8... ltJe4): Dl: 9 'ii'c1 2S D2: 9l:tc1 2S Other continuations: a) 9 cxdS?! ltJxc3 10 'ii'd2 .i.b4 11 lIc1 ltJxdS 12 axb4 'ikxb4 13 i.c4 'ikxd2+ 14 ltJxd2 Debski-Panczyk, Opole 1974. b) 9 'iib3 i.e7 10 i.d3ltJxc3 11 bxc3 0-0 12 0-0 dxc4 13 .i.xc4 (SchmidGawehns, Bundesliga 1986n) 13 ... i.d6 14 e4 eS IS dxeS i.xeS 16ltJxeS 'ikxeS

+

White prevents ... .i.b4 and has some ideas of playing b4. However, this move is somewhat sluggish. 8 ••.ltJe4 Other moves: a) 8 ... i.d6?! (after this White's play is justified) 9 cS .i.b8 10 .i.d3 0-0 (lO ... eS 11 b4 "ilid8 12ltJxeS .i.xeS 13

=

c) 9 'ii'c2 .i.b4 (9 ... .i.e7 10 i.d3 ltJxc3 11 'ikxc3 'ikxc3+ 12 bxc3 f6 13 cxdS, Kratochvil-Schmitz, Wtirzburg 1996,13 ... exdSI4~e2i.d6=) lOl:tcl

7Lf6 ..ixc3+ 11 bxc3 Vi'xa3 12 J..d3 ltJf6 ( 12 ... f5 13 c5 Vi'a5 140-0 Vi'd8 15 .:tal with good compensation for the pawn) 130-0 dxc4 (13 ... 0-014 c5 Vi'a5 15 .:tal -"c7 16 :a4 also with compensation) 14 J..xc4 and White has compensation for the pawn, Kiema-Sorli, Bratislava lJ-J8 girls Wch 1993.

Ol} 9'ilVc1 This move looks peculiar, but the idea is that on this square (unlike c2) Ihe queen still defends the aI-rook, hcnce ... ..tb4 is not possible. 9...ltJxc3 10 Vi'xc3 After 10 bxc3 the white queen is inactive and White must also lose a Icmpo; e.g., 1O ... c5 (10 ... b6!? intending ... ..ta6) 11 Vi'd2 (worse is 11 J..d3 dxc4 12 J..xc4 cxd4 13 exd4, HirtHaberer, Germany 1993, 13 ... J..d7 14 tile5 :c8 +) ll...dxc4 12 J..xc4 b5 13 .ie2..tb7 140-0 a6 =. 10...Vi'xc3+ 11 bxc3 f6 Other moves also deserve attention: a) 1l...J..e7 12 J..e2 0-0 13 0-0 (Mansoor-Tabemig, Singapore U-18 Wch 1990) 13 ... b6!? 14ltJe5 ..tb7 =. b) 1l.....td6 12 a4 b6 (12 ... 0-0 13 .id3 {13 a5!?;1;} 13 ...:e8 14 c5 ..tc7 15 a5 :b8 160-0 f6 =Dalhoff-Franke, German jr Cht 1992) 13 cxd5 (13 ..te2 <j;e7 14 Wd2 dxc4 15 .ixc4 c5 16 e4 cxd4 17 cxd4 .ib7 =) 13 ... exd5 14 .id3 .ig4 =. 12 .ie2 J..d6 12 ... .ie7 13 0-0 b6 = Mojica-Barroso, Catalonia tt 1996. 13 0-0 Burkart-Mailitis, Germany 1993. Now 13 ...b6 gives Black a very good cnding.

25

02) 9.:tc1 This move looks extremely natural, except that it will not be the rook that recaptures on c3. 9••.ltJxc3 Other moves: a) 9 ... dxc4 10 .ixc4 ltJxc3 (1O ...b5 11 .id3 ltJxc3 12 Vi'd2 b4 13 axb4 J..xb4 14 bxc3 .id6 150-00-016 %:tal ;1; Gehrmann-Hamann, Germany 1982) 11 Vi'd2 .id6 12 Vi'xc3 Vi'h5 13 ltJe5 0-0 14 J..e2 ;1;. b) 9 ... J..e7 10 .id3 f5 11 0-00-012 ltJe5 (12 cxd5 exd5 13 Vi'b3 'iti>h8 = Monedero-Zoltek, Grieskirchen 1998) 12... J..f6 13 f4 :d8 14 c5 ;1; Chevallier-Dreyer, Cappelle la Grande 1995. c) 9 ... .id6 10 c5!? (10 J..d3, Bisereko-Lesiege, Elista OL 1998, 1O...ltJxc3 11 'iid2 dxc4 12 J..xc4 e5! =) 10... J..b8 (10 ... J..c7 11 J..d3 f5 120-00-0 13ltJe2 .id8 14 b4 ;1; with the point 14 ... 'iixa3 15 'ii'c2 Vi'xb4 16 .:tal ltJxc5 17 dxc5 .ie718.:tfcl +-) 11 J..d3f5120-00-0 13ltJbl Vi'd8 14ltJe5 .ixe5 15 dxe5 b6 ;1;. 10 Vi'd2 The obvious 10 %:txc3? falls foul of 1O... J..xa3 11 ltJd2 J..b4 12 .:tc2 (Krstev-Mihajlovski, Skopje 1998) 12 ... e5! 13 cxd5 J..f5 14 dxc6 J..xc2 15 cxb7 l:d8 16 Vi'xc2 exd4 -+. 10••• J..d6 11 Vi'xc3 'ii'xc3+ 12 .:txc3 Baumann-Chaves, Dubai worn OL 1986. Black can now play 12 ... f6 (intending ... e5) 13 cxd5 exd5 14 .id3 g6 E)

8.id3 (D) White simply develops, playing a move that wouldn't have been feasible

26

THE CAMBRIDGE SPRINGS

B

without the preliminary exchange on f6. Now: El: 8...lDe4 26 E2: 8...i.b4 26 E3: 8...i.e7 28 E4: 8...dxc4 29

El) 8••• lDe4 9 J..xe4 dxe410 lDd2 f5 1O.. :iigS 11 0-0 (11 lDcxe4 'iixg2 12 'iif3 'iixf3 13 lDxf3 b6, ProkesTaussig, Bmo 1907, 14 cS ;t) l1...fS (Rudolf-Zum Felde, Germany 1998) 12 cS i.e7 13lDc4 0-0 14 'iie2;t. H 0-0 11 f3 'iib6!? (l1...exf3 12lDxf3 g6 13 0-0 J..g7 14 e4 ;t Albareda-Troeger, Oberhausen Echt 1961) 12 lDb3 exf3 13 'iixf3 'iib4 14 cS as IS 'iif2 b6 16 cxb6 'iixb6 17 0-0 a4 18 lDc 1 J..d6 19 lDd3 0-0 =. H ...J..e7 12 f3 12 'iihS+ g6 13 'iih6 (SkalickaSchulz, Prague 1927) 13 ... J..f8 14 'iih3 eS ;to 12...exf3 13 lDxf3 White has the better chances, Frydman-Petrov, Podebrady 1936.

E2) 8•.• J..b4 9 'iib3

Other moves: a) 9':'c1?! 'iixa2 (9 ... J..xc3+ 10 bxc3 {10 ':'xc3? dxc4} 1O... 'iixa2 11 cxdS exdS 12 lDeS 0-0 13 0-0 'iia3 14 c4 'iie7 '+) 10 ':'c2 (10 'iid2 'iiaS 11 cxdS exdS 12'iic2 0-0 13 0-0 l:.e8 and Black is a pure pawn up) 10... 0-0 11 0-0 'iiaS (11...J..xc3 12 bxc3 'iia3 '+) 12lDeS cS and White does not have full compensation for the pawn. b) 90-0 J..xc3 (9 ... cS 10 cxdS J..xc3 11 bxc3 exdS 12 c4 cxd4 13 lDxd4 0-0 14 cxdS ;t Vinuesa-Guimard, Buenos Aires 1935; 9 ... dxc4 10 J..xc4 J..xc3 11 bxc3 - 9... Lc3 10 bxc3 dxc4 11 Lc4) 10 bxc3 dxc4 (1O ... 'iixc3 11 cS 0-0 12 lDeS'iia3 13 'iic2 h6 14 ':'abl 'iiaS IS l:tb3 with compensation) 11 i.xc4 'iixc3 12 'iie2 (12lDeSlDd7 13 ':'c1 'iiaS 14 lDxd7 J..xd7 IS 'iib3! b6 16 J..d3 ':'c8 17 ':'c4 cS 18 dxcS ':'xcS 19 ':'xcS 'iixcs 20 'iibl with compensation for the pawn) 12...0-013 .:.fcl 'ii'a3 (13 ...'iiaS!?) 14 J..d3 gives White compensation for the pawn, Waagmeester-Plomp, corr. 1988. c) 9 'iic2 and then: c1) 9 ... dxc4 10 J..xc4 - 8 i.d3 dxc4 9 Lc4 J..b4 10 1i'c2. c2) 9 ... J..xc3+ 10 bxc3 'iic7 11 0-0 b6 (Najgebauer-Jensen, Nyiregyhaza 1994) 12 cxdS cxdS 13 ':'acl 0-0 14 lDeS J..b7 IS 'iVa4 is slightly better for White. c3) 9 ... lDe4 10 J..xe4 (after 1O':'c1 lDxc3 !? 11 bxc3 dxc4 12 J..xc4 J..d6 13 J..d3 1i'hS White has only a minimal advantage) 1O ... dxe4 11lDd2 fS 12 cS (120-0, Rosenthal-Perkins, New York 1916, 12 ... eS!? 13 a3 i.xc3 14 lDb3 'iVd8 IS 'iixc3 ;t; 12 f3 exf3 13 lDxf3 0-0 140-0;t Tyurin-Lamouche, e-mail 1995) 12 ...b6 13 lDc4 'iia6 14 lDd6+

7 Lf6 'J;c7 ;t; Zimmermann-Brix, Mannheim 1990. c4) 9 ... cS 10 0-0 (10 ltJd2 cxd4 11 ~xd4 JLxc3 12 ~xc3 ~xc3 13 bxc3 dxc4 14 ltJxc4 cJ;;e7 = Kmoch-Vajda, Kccskemet 1927) and here: c41) 10 ... 0-0 11 ltJxdS!?exdS 12a3 dxc4 13 JLxc4 cxd4 14 axb4 ~xb4 IS t;)xd4 ;t;. c42) 1O... ~xc3 11 bxc3 dxc4 12 ~xc4 0-0 13 JLd3 cxd4 14 cxd4 ;t; Kahn-Ia.Bolbochan, Buenos Aires OL 1939. c43) 10... cxd4 11 ltJxd4 (11 exd4 dxc4 12 JLxc4 0-0 13 ltJe4 JLe7 14 llac1 .ud8 =) l1...dxc4 12 .i.xc4 .i.xc3 13 bxc3 0-0 (13 ... i.d7 14 llabl llc8 = Kunak-Halasz, Slovakia 1994) 14 :tabl a6 = Kolb-Colberg, e-mail 1996. 9.•.dxc4 Other continuations: a) 9 ... b6 (Black intends 1O....i.a6) 10 ltJeS JLb7 11 0-0 (11 cxdS!? ;t;) 11...0-0 (Szilagyi-Nagy, COIT. 1992) 12 cxdS exdS 13 a3 i.xc3 14 ~xc3 ~xc3 IS bxc3 and White is better. b) 9... ltJe4 (Filipcic-Tomovic, Novi Sad 1945) 10 .i.xe4! dxe4 11 ltJd2 fS 12 cS! .i.xc3 (12 ... bS 13 f3 exf3 14 ltJxf3 JLxc3+ IS bxc3 ~c7 160-00-0 17ltJeS ±) 13 bxc3 0-0 14ltJc4 ~c7 IS

O-O±. c) 9... 0-0 10 0-0 .i.d6 (10 ... cS 11 cxdS cxd4 12 exd4 JLxc3 13 bxc3 ~xdS 14 c4 ~d61S .t:.fdli.d7 16ltJeS .i.c6 17 a4 ;t; Korchnoi-Filip, Cura~ao Ct 1962) 11 :tac1 dxc4 12 .i.xc4 ~hS 13ltJe2 lld8 (13 ... ltJe4, Martinez Gonzalez-L.Georgieva, Oropesa del Mar U-16 girls Wch 1999, 14 ~c2 ;t;) 14 ltJg3 'iWaS IS llfdl is slightly better for White. d) 9 ... cS and then:

27

dl) 100-0 cxd4 11 exd4 dxc4 12 ~xc4 .i.d7 13 a3 i.e7 14ltJeS (HeIT-

ies-McLaughlin, COIT. 1992) 14....:td8 IS .:tfc1 0-0 =. d2) 10 cxdS was played in Groszpeter-Inkiov, Plovdiv 1982, and now 10... cxd4 l1ltJxd4ltJxdS 12ltJde2 0-0 13 0-0 ltJxc3 14 ltJxc3 lld8 IS .i.e4 llb8 is equal. d3) 10 a3 cxd4 (10 ....i.xc3+ 11 bxc3 dxc4 12 i.xc4 a6 13 0-0 bS 14 i.e2 c4 IS ~c2 ;t;) 11 ~xb4 ~xb4 12 axb4 dxc3 13 bxc3 dxc4 14 .i.xc4 r:J;;e7 IS JLd3 and White has a slightly better ending. 10 .i.xc4 (D)

B

10...ltJd5 Alternatives: a) 1O... cS 11 0-0 cxd4 (11...0-0 12 ltJeS .i.xc3 13 ~xc3 ..wxc3 14 bxc3 ;t; Makarov-Scherbakov, Rybinsk 1991) 12 exd4 (12 .i.bS+ .i.d7 13 .i.xd7+ ltJxd7 14 exd4 0-0 IS ltJe4 ~dS 16 ~xb4 ..wxe4 17 llacl ltJb6 18 llfel ~dS = Romanovsky-Smyslov, Leningrad 1939) 12 ... 0-0 13 ltJeS (13 .i.d3 .l:r.d8 14 .ufel i.d7, Ornstein-Bagirov, Kirovakan 1978, IS a3 .i.d6 16ltJeS =) 13 ... a6 (13 ... lld8 14 lladl a6 IS i.e2 .i.d6 16 .:tfel ~c7 17 .i.f3 ;t;) 14 i.e2

28

THE CAA1BRIDGE SPRINGS

i.d6 IS .:tfe1 i.xeS 16 dxeS 'fixeS 17 i.xa6 'figS 18 i.d3 .:td8 19iDe4;1;. b) 10... 0-0 11 0-0 and then: b1) 11...i.xc3 12 bxc3 b6 13 iDeS i.b7 14 i.xe6!? (or 14 iDxf7
13 bxc3 i.d614 e4 eS lSiDgS A good alternative is IS .:tfd1; e.g., lS ... exd4 16 cxd4 i.f4 (l6 ... 'iWhS 17 eS i.c7 18 dS cxdS 19 i.xdS ;1;) 17 .:tc3 i.g418 eS bS (l8 ....:tad8 19 h3 i.c8 20 .:tel ;1;) 19 i.e2 i.e6 20 'ii'c2 'ii'xa2 21 'iWxa2 i.xa2 22 .:txc6 b4 23 i.c4 ;1; . lS .••exd4 16 iDxf7 i.f4 17 iDeS+
7 Lj6 11)99) ll...cxd4 12 exd4 dxc4 13liJxc4 'ilk7 14 fiB .i.d7 =. 10...dxe4 nliJxe4 In Yudovich-Ragozin, USSR Ch 11)14 Black continued 1l....i.d7?! 12 'iVc2 l:.fd8 13 l%fdl .i.e8 14 a3 l%ac8 15 l%d2 g6 16 l:.adl;!;. We prefer more act ivc play: ll...liJxe4!? 12 .i.xe4 c5 13 115 (13 dxc5 fixc5 14 fie2 f5 15 .i.d3 .if6 16lHei e5 =) 13 .. :i;b6!? 14 l%el (14 fic2 f5 15 .i.d3 .i.f616 l%ael g617 l:tc2 'if'd6 18 l%fel l%e8 =) 14... f5 15 .ic2 .i.f6 16 l%b 1 l%d8 17 fie2 g6 and a pI )sition of dynamic equality has arisen.

E4) 8...dxc4 (D)

Black surrenders his central strongpoint, but in return gains time and wcakens White's hold on e4. 9 i.xc4 i.b4 Other continuations: a) 9 ...b5 10 i.d3 i.b7 11 0-0 was played in Lopez-Briffel, Maringa tt 1991, and now 1l...b4 12liJe4 c5 13 lihf6+ gxf6 14 fie2 a6 15 dxc5 gives White a slight advantage. b) 9 ... a6 10 0-0 i.e7 (MenchikEm.Lasker, Moscow 1935) 11 fic2 0-0 12l:!.fdll:!.d8 13liJe4liJxe4 14 fixe4;!;.

29

c) 9 ... i.e7 10 0-0 0-0 (BourveA.Bonisch, Wolfstein girls 1991) 11 fib3!? l%d8 12 l%fdl fih5 13 i.e2liJd5 14liJe5 fih4 15 l:.ac1 i.d6 16 g3 fie7 17liJe4 ;!;. d) 9 ... liJd5 (Z.Popovic-Broder, Novi Sad 1936) 10fib3!?fib4(10... i.b411 l%cl 0-0 12 a3 i.d6 13 0-0 liJxc3 14 'ii'xc31i'xc3 15 l%xc3;!;) 11 a3 fixb3 12 i.xb3liJxc3 13 bxc3 b5 14 c4 bxc4 15 i.a4 ;!;. e) 9... i.d6!? 10 0-0 0-0 l1liJd2 (II fic2 e5 12 dxe5 i.xe5 13 b4 fic7 14 liJxe5 "xe5 =) ll...e5 12 liJce4liJxe4 13 liJxe4 (Model-Lisitsyn, Leningrad Ch 1932) 13 ... i.c7 14 d5 i.f5 15 'ii'f3 i.xe4 16 fixe4 b5 17 i.b3 c5 with counterplay; e.g., 18 a4 i.d6 19 axb5 'iVxb5 20 i.a4 (20 l%a3 'ii'b8 21 'ii'c4 e4 =) 20 ... 'ilfxb2 21 i.c6 f5 22 'iVh4 l%ab8 23 l%xa7 e4 =. 10 'ii'c2 c5 Other moves: a) 1O... liJe4 11 l%c1liJxc3 (ll...liJd6 12 i.b3 {EeO gives 12 i.d3 1i'xa2 13 0-0 intending e4-e5 with compensation, Stolz-Koch, Berlin 1928} 12... 'iVh5 13 0-0 0-0 14 liJe2 liJf5 15 liJe5 ;!;) 12 bxc3 i.d6 13 i.d3 is slightly better for White. b) 10... 0-0 11 0-0 and then: bl) ll...b6 12 liJe5 i.b7 13 liJe4 i.e7 14liJg5 ± / +- Marshall-O'Hanlon, Warsaw OL 1935. b2) ll...c5 12liJe4liJxe4 (12 ... cxd4 13 liJxf6+ gxf6 14 liJxd4 ± BamptonEm. Lasker, USA simu11906) 13 'iVxe4 cxd4 14 liJxd4 ;!; Bouland-Nuvolini, Paris Ch 1992. b3) 11..:ii'h5 12 i.e2!? l:!.d8 13 l%ac1 i.d6 14liJe5 ;!;. b4) 1l...l:!.e8 12 e4 i.fS (12 .. :ii'h5!? ;!;) 13 i.d3 g6 14 a3 and White has the

30

THE CAMBRIDGE SPRINGS

better position, Alekhine-Maurer, Vienna 1930. c) lO ... liJdS 11 l:.c1 0-0 12 0-0 (12 e4 liJb6 {12 ... liJxc3 13 bxc3 i.e7 14 0-0;1;} 13 i.d3 eS 14 liJxeS 'fixa2 IS 0-0 'fie6 16 f4 'fie7 with chances for both sides) 12 ... liJxc3 13 bxc3 i.d6 and then: cl) 14 'fie4 'fihS leads to complicated play, Hermanowa-Langos, Moscow worn Wch 19S0. c2) 14 i.d3 h6 IS l:tfdl!? (1S c4 cS 16 l:tbl 'fic7 17 l:.fdl b6 18 i.e4 l:tb8 is equal, Ronsted-L.Petersen, Copenhagen 1999) IS ... cS 16 liJeS i.xeS 17 dxeS 'fic7 18 f4 i.d7 19 i.h7+ 'ith8 20 i.e4;1;. c3) 14 l:.fdl 'fihS (14 ... l:.d8 IS e4 'fihS 16 eS i.a3 17 l:.bl ±; 14... b6 IS l::tbl i.b716i.e2'ti'hSI7liJeS'fih618 g3 i.xeS 19 dxeS cS 20 l:td7;1;) IS l:tbl l:tb8 (1S ... l:.d8 16 i.e2 b6 17 c4 ;1;) 16 i.e2 l:.d8 17 liJeS ;1;. d) 1O... 'fic7 11 a3 (11 0-0 0-0 12 i.d3 l:.d8 13 l::tac 1 gives White a slight advantage) 11...i.d6!? (ll...i.e7 12 i.d3 0-013 l:tcl g614 0-0 liJdS ISliJe4 ;1;) 12 i.d3 0-0130-0 eS 14 dxeS i.xeS and Black should gradually equalize; e.g., IS l:.acl (1SltJe4liJxe416 i.xe4 fS 17liJxeS { 17 'iWb3+ ~h8 18 i..d3 i.f6} 17 ...'fixeS 18 i.d3 i..e6 19 l:.adl ~h8 20 l:.fel l:tad8 21 l:.e2 l:.d7) IS ... i..g4 16liJxeS 'ti'xeS 17 liJe4liJxe4 18 i.xe4 'fihS 19 'fib3 l:.ab8. 11 0-0 cxd4 1l...i.d7 12 liJe4 cxd4 13 liJxf6+ gxf6 (Von Saldern-Woods, Guernsey 1990) 14liJxd4 l:.c8 IS ;1;. 12 exd4 12 liJxd4!? i.xc3 13 bxc3 0-0 14 'fib2 'ti'c7 =. 12•••0-0

:act

12... i.xc3 13 bxc3 0-014 l::tfel 'fic7 (or 14... i.d7, Orfanos-Vul, Ano Liosia 1997, IS l:tac1!? l:.ac8 16liJeS l:tfd8 =) IS 'fid3 b6 16liJeS i.b7 17 l:te3 gives White some initiative, but Black has sufficient counterplay; e.g., 17 ...l:.fc8!? (17 ... l:tac8 18 l::tael {18 l:.blliJdS 19 l:th3 h6 20 'ti'c2 l:tfd8 21 l:tg3 f6 22 liJg4 'ith8 =} 18 ... liJdS 19 l:th3, Udovcic-Robatsch, Havana 1964, 19 ...h6!? with counterplay) 18 i..b3liJdS 19 l:th3 h6 and Black is doing very well; e.g., 20 l:tf3 (20 i.c2 fS!?) 20.. .'it'xc3 21 'fidl 'fib2! with the point 22 liJxf7 liJc3 23 l:.xc3 l:.xc3 24 i.xe6 ~f8. 13 l:tfel Better is 13 liJe4 i..e7 =. 13•.•b5! The most energetic move. Weaker is 13 ... i.d7 (Gneuss-Van Otte, COIT. 1979) 14liJeS l:.ac8 IS a3 i.d6 16 b4 'iWc7 17 l:tacl l:.fd8 =. 14 i.e2 14l:.eSa61Si.d3i..b716liJgSg6+. 14••• i..b7 15 l:tec1 IS a4 bxa4 16 l:.ec1 l:tad8 17 l'ha4 'fib6 +. 15••. i..e7 16 a3 a617liJe5 l::tfdS IS i.f3 'iWb6 Black is better due to his good development and the weakness of the d4pawn. F)

SliJd2 (D) This is the main line, and is aimed against ... liJe4, while if Black now exchanges on c4, the knight will be able to recapture, gaining time on the queen. Now: Fl: S.•• i.e7 31 F2: S••• i..d6 33 F3: S•••i.b4 3S

7

"

( )ther continuations: a) 8... lLle4 9 lLldxe4 dxe4 10 .Jte2 (10 ~a4 ii'xa4 11 lLlxa4, MansoorlIalluoko, Dubai 1996, ll...e5 12 dS I xd) 13 cxd5 .JtfS 14 .JtbS+ <Ji>dS =) I ()... i.e 7 11 0-0 f5 (Vasconcellos-ManVilli, Rio de Janeiro 1965) 12 a3 'iilc7 I \ b40-0 14 cSl:tf6 ;!;. h) 8... g6 9 .Jte2 j"g7 (LarracheaSoppe, Santiago 1992) 10 0-0 0-0 11 ~l' I 'iilb4 12 'iilc2l:tdS 13 l:tfdl b6 14 .J\tJ dxc4 ISlLleS ;!;. el 8... .Jtd7 9 .Jtd3 (9 c5 eS 10 j"e2, (illcrrero-Bergraser, Tel-Aviv 1964, IO ... cxd4 11 exd4.Jte7 120-00-0 13 lId l:tfe8 14 'iilc2 'iilc7 IS j"d3 b6 =; 9 II \ UJlic7 10 l:tcl j"e7 11 .Jtd30-0 12 0-0, lIalia-Reti, Budapest 1913, 12... l:tfdS!? ) 9 ... .Jtd6 10 cS (10 0-0 eS 11 cxdS !'Xd) 12 dxeS .Jtxe5 13 'iilb3 0-0 14 lIat: 1 .Jtc6 IS lLlf3 d4 = with the point Ih <1Jxd4 .Jtxh2+) 1O... .Jte7 11 0-0 ;!;; I'g., 1l...eS 12 dxeS lLlg4 13 .Jte2 (,\xc5 14 lLlb3 'iildS 15 e4 dxe4 16 (, \xc4. d) S.. :i!Vd8 9 l:tc1 (9 j"e2 .Jtd6 10 Ill' 1 0-0 11 0-0 eS 12 dxeS j"xe5 13 r;\IJ .Jtxc3 14 l:txc3 = Rapp-Immer, lIadcn 1994) 9 ... .Jtd6!? (9 ... .Jte7 10 .!Ld3 0-0 11 0-0 l:teS, Minnis-Boettner, IIlIcnos Aires OL 1939, 12 lLlf3 dxc4

Lf6

31

13 j"xc4 'iila5 14 'ii'c2 ;!;) 10 'iWc2 (10 .Jtd3 eS 11 cxd5 exd4 12 exd4 'iWe7+ 13 'iile2lLlxdS 14lLlxdS cxdS =) 10... 'iWe7 11 .Jtd3 0-0 12 0-0 l:tdS 13 c5 j"c7 14 lLlf3 eS =, e) S.. :iic7 9l:tc1 and then: el) 9 .. ,j"e7 10 j"d3 0-0 11 0-0 b6 (1l...l:td8 12 lLlf3, G.Magnusson-Paidousis, Leipzig OL 1960, 12... dxc4 13 .Jtxc4 cS =; 1l...j"d6 12 h3 a6 13 cS .Jte7 14lLlf3 ;!;) 12 cxdS (12 'iWe2 a6 = Rubinstein-Spielmann, Vienna 1936; 12 e4 dxe4 13 lLldxe4, Fuss-S.Rubinstein, Vienna 1936, 13 ...l:tdS:j:) 12...exd5 13 'iWc2 (13 e4, Dickau-Egger, Villa Ballester 1991, 13 ... dxe4 =) 13 ... j"b7 14l:tfel ;!;. e2) 9 ... a6 10 'iWf3!? (10 .Jte2 .Jtd7 II a3, Skembris-Borgo, Estensi 2001, 1l...j"e7 12 'iilb3 0-013 0-0 j"d6 14 g3 b6 =) 1O ... j"d6 II cS j"e7 12 .Jte2 (12 j"d3 eS 13 'iWg3 'iilbs 14 dxeSlLlhS 15 'iWf3 'ii'xeS =) 12 ... 'ii'bS (12 ... eS 13 'iiig3 the bishop being on e2 prevents ... lLlh5, which is possible in the 12 j"d3 line) 13 lLla4 lLld7 14 e4 0-0 15 0-0 l:tdS 16l:tfel dxe4 17lLlxe4 (17 'iilxe4 lLlf6 IS 'iild3 eS 19lLlb6 ;!;) 17 ...'iWc7 IS l:tcd I 'iilaS 19 b3 ;!;.

Fl) 8... j"e7 Black simply develops. 9 j"d3 Other moves: a) 9 cxdS exdS 10 'ii'c2 j"e6 II .Jtd3 j"d6 12 0-0 0-0 13 lLlf3 'iWc7 = Stankovic-Worek, Verdun 1995. b) 9 'iilc2 .id7 (9 ... dxc4 10 lLlxc4 'fIc7 11 a3 0-0 12 b4 b6, VaganianO.Rodriguez, Las Palmas 1979, 13 j"d3 .Jta6 14 lLle4lLldS ISlLled2;!;) 10 .id3 bS (l0 ... 0-0!? II 0-0 'iilc7 =) II cS (II

32

THE CAMBRIDGE SPRINGS

tDb3 'fic7 {1l...'ifb6 12 cS 'fic7 13 a4 b4 14 tDe2 as IS 0-0-0 eS = F.Portisch-Kovacs, Budapest 1965} 12 cxbS cxbS +) ll...eS 12 dxeS tDg4 13 tDf3 'fic7 14 tDe2 tDxeS IS tDxeS 'fixeS =. c) 9 i.e2 0-0 10 0-0 and then: el) 10 ... 'fid8 11 tDf3 (11 a3 - 9 a3 0-0 10 i.e2 'iid8 11 0-0) ll...b6!? 12 'fic2 i.b7 13 ltadl dxc4 14 i.xc4 cS =. c2) 1O... a6 11 cS tDd7 12 a3 eS = Griinenwald-Vanda, Switzerland 1992. c3) 1O... i.d7 11 ltel ltac8 (11...bS!? 12 l2lb3 'fib6 13 cxbS cxbS 14 l2lcs i.xcs IS dxcS 'ii'xcs 16 l2lxbS =) 12 'fib3 bS 13 cS eS 14 dxeS l2lg4 IS i.xg4 i.xg4 =. c4) 1O.. J:td8 11 'fic2 (11 a3, Szigeti-L.Steiner, Hungarian Ch 1931, 1l...'ii'c7!? =) 1l...'fic7 12 ltfdl i.d7 13 ltael (Veingold-Averkin, USSR tt 1979) 13 ... a6 14 cS eS =. d) 9 a3 0-0 (9 .. :fic7 10 ltel 0-0 11 i.d3 b6 12 cxdS exdS 13 0-0 i.b7 =) and then: dl) 10 i.d3 'fid8 11 b4 and then: d 11) ll...a6 12 cS eS 13 dxeS l2lg4 14 'iWc2 (14 :cl, Fanha-Costa, Portugal tt 2000, 14... d4 IS exd4 'iWxd4 =) 14 ... g6 IS e4 ;to d12) ll...aS!? 12 cS eS 13 dxeS l2lg4 14 l2lf3 'iWc7 IS 0-0 l2lxeS 16 l2lxeS 'iWxeS =. d13) l1...b6 12 0-0 i.b7 13 cxdS cxdS (Katz-Bisguier, Pittsburgh 1946; 13 ... exdS 14 'iWc2 :e8 IS :tbl i.d6 =) 14 'iWb3!? =. d2) 10 i.e2 'fid8 11 0-0 and then: d21) ll...cS 12 dxcS i.xcs favours White due to Black's IQP: 13l2lb3 (13 cxdS!? l2lxdS 14 l2lxdS exdS IS :el i.d6 ;t) 13 ... i.b6 14 cxdS l2lxdS IS tDxdS is slightly better for White, Ivkov-Raicevic, Borovo 1981.

d22) ll...b6! 12 ltel cS 13 l2lb3 dxc4 14 i.xc4 cxd4 IS l2lxd4 i.b7 = Kallai-Cvetkovic, Liechtenstein 1988. We now return to 9 i.d3 (D):

9•••0-0

Other moves: a) 9 ... dxc4 10 l2lxc4 'iWc7 11 ltel 0-0 120-0 :d8 13 'ii'e2 i.d7 14 l2le4 l2lxe4 IS i.xe4 ;t EI Kher-Cu.Hansen, Danish Ch 1999. b) 9 ...'fic7!? usually transposes back to the main line. 100-0 Other continuations also fail to give White an advantage: a) 10 f4 'fic7!? (1O ... i.d7, Von Patay-Spielmann, Vienna 1923, 11 cS 'fic7 12 0-0 b6 13 b4 :fb8 14 l2lb3 'fid8 IS :bl ;t) 11 'fif3 (11 g4 eS!? 12 fxeS {12 dxeSl2lxg4 13 cxdS i.h4+ 14 ~e2 l2lf2 IS 'fic2 l2lxhl 16 i.xh7+ 'it.i>h8 17 :xhl i.g4+ +} 12... l2lxg413 'fif3 i.h4+ 14 ~e2 tDf2 IS :hgll2lxd3 16 ~xd3 f6 with an initiative) ll...b6 12 ltel (12 g4 i.a6 13 gSl2le8 14 'fihS g6 IS 'fie2 :d8 =) 12 ...:d8 13 fS eS 14 cxdS cxdS IS 0-0 'fib8 16 'iWg3 e4 =. b) 10 'iWc2 h6 (1O ... 'ii'c7 110-0 :d8 12 ltael dxc4 13l2lxc4 cS =AcevedoKashdan, Mexico 1932; 1O... dxc4 11

7Lf6 Ii 11\l'4 'iVh5 12lLle5, Haida-Przepiorka, Marienbad 1925, 12... c5 13 ~e2 cxd4 I·II'x04 'iVh4 =; 10.. ,.!:td8 11 h3 dxc4 12 !; 1)(1'4 'fic7, Troeger-Schindler, W.GerlIIall Ch 1950, 13 0-0 =) 11 lLlb3 'iYd8 1,1 0-0 (12 f3 dxc4 13 i.xc4, Baard\1'11 Nilsson, Vaxjo 1992, 13 ... a5 14 () () 4\d5 +with the point 15 l:tael a4 III 41<.l2lLlxe3 17 .!:txe3 ~xd4 18 .!:tfel t~) 12 ... lLlg4 (l2 ... ~d6!? 13lLld2 e5 1·1 dxe5 'iYxe5 15 cxd5lLlxd5 =) 13 h3 ( I \ exd5 'iVd6 14 g3 exd5 15 e4 dxe4 III 4\xe4 'iVd8 =) 13 ... lLlf6 14 .!:tael id() 15 c5 i.c7 16 f4 b5 =. IO •• JldS Black can also play: a) 1O ... dxc4 11 lLlxc4 ~c7 12 ~c2 .':"d6 13lLlxd6 ~xd6 14 :tfdl e5 (Grii1Il'lIwald-Roesi, Lucerne worn 1994) I) <.I5! ;1; with the point 15 ... cxd5 16 (;\x05 lLlxd5 17 i.xh7+ ~h8 18 i.e4 !/\xe3 19 fxe3. h) 1O ... i.d7 11 a3 'ikc7!? 12 ~f3 l:t.ae8 13 e4 dxe4 14 lLlcxe4 lLlxe4 15 v\xe4 f5! intending ... i.f6 with good play. e) 1O... it'd8 11 it'e2 (11 ~c2 a6 12 (') g6 13 f4 b5 14 .!:tael a5 15 lLlf3 b4 I() lLla4 i.a6 17 i.xa6 J:txa6 18 lLle5 'fie7 ;1; lh-1f2 Hoffman-Campora, Bue1I0S Aires 1999) l1...b6 12 .!:tfdl i.b7 (I'ushkov-Kasimdzhanov, Cappelle la (,rande 1997) 13lLlf3 ;1;. 0) 1O... 'ikc7!? seems to be the most flexible; e.g., 11 ~c2 i.d7 12 :tacl (12 l:t.adl b5 13 c5 e5 14 dxe5 ~xe5 =) 12 ... h6 13 .!:tfdl .!:tad8 14lLlf3 dxc4 15 il.xc4 c5 = or 11 .!:tel i.d6 (l1...b6 12 ~c2 a6 13 e4 dxe4 14 lLldxe4 J:td8 = S.Rubinstein-Spielmann, Vienna 1936) 12lLlf3 (Matusan-Grzincic, Pula 1999) 12 ... dxc4 13 i.xc4 e5 =. 11 a3 ~c7!?

33

11...i.f8 12 b4 ~c7 13 f4 i.d7 14 it'c2 gives White a slight advantage, Schlechter-Alapin, Barmen 1905. 12 ~c2 i.d7 The game is equal. F2) S...i.d6 (D)

w

This is another solid move, although the bishop develops slightly more actively at the cost of being more of a target. Now: F21: 9 i.e2 34 F22: 9 i.d3 35 Alternatively: a) 9lLlb3 ~c7 (also good is 9 ...'fid8 10 f4 0-0 11 i.d3 dxc4 { ll...b6 12 0-0 c5, Factor-Ed.Lasker, Bradley Beach 1928, 13 dxc5 i.xc5 14lLlxc5 bxc5 = } 12 i.xc4 lLld5 13 ~f3 a5 14 lLld2 a4 with good chances for Black) 10 c5 i.e7 11 f4 b6 12 i.d3 bxc5 13 lLlxc5 i.xc5 14 dxc5 ~a5 Cortina-Quinteros, Trelew 1995. b) 9 cxd5 exd5 10 i.d3 0-0 (alternatively, 1O.. .'iVd8 11 h3 0-0 12 0-0 .!:te8 13 .!:tbl, Movsisian-Miiller, Miinster 1994, 13 ... ~e7 with good play for Black) 11 0-0 .!:te8 12 ~c2 (12 a3,

+

34

THE CAMBRIDGE SPRINGS

Russo-Ho Cheng Pai, Matinhos 1994, 12 ...'ikc7 13 h3 'ike7 with an excellent game for Black) 12 ... h6 13 a3 'ikd8 14 b4 and Black has an equal position both after 14 ... a6 and 14 ...'ike7!? c) 9 a3 0-010 b4 'ikd8 11 cS ~c7 12 f4 eS! (or 12 ... aS!? followed by ... eS) 13 dxeS (13 fxeS?! ttJg4 14 e4 {14 ttJf3 f6 with a dangerous initiative} 14... ttJe3 IS 'ikb3 dxe4 +) 13 ... ttJg4 14 'ikf3 f6 (14 ... aS IS.l:teI {IS bS 'ike7} IS ... f6 16 h3 ttJxe3 17 'ikxe3 d4 18 ~c4+ Wh8 19 'ikd3 dxc3 =) IS h3 (1S e6?, Birnbaum-Zimmermann, Mannheim 1990, IS ... fS 16 ttJe2 'ikf6 17 ttJd4 l:te8 18 l:tdl ~xe6 +) IS ... ttJxe3 16 'ikxe3 d4 17 ~c4+ (17 'ikd3 dxc3 18 ttJf3 fxeS 19 fxeS ~e6 with an initiative for Black; e.g., 20 'ikxc3? l:txf3 21 'ikxf3 ~xeS 22 l:td 1 'ikh4+ -+) 17 ... cJi'h8 18 'ikd3 dxc3 19 'ikxd8 :lxd8 20 ttJf3 as imd in this very complicated position both sides have chances. d) 9 cS and now: dl) 9 ... ~f8 10 f4 g6 11 ~e2 ~g7 (Tatai-Bellini, Mantova 1996) 12 O-O!? 1. d2) 9... ~b8 10 f4 (10 a3 0-0 11 b4 'ikc7, Roehl-Menzel, Lingen 1995, 12 f41) 10... 'ikd8 (10 ... 0-0 11 ~d3 'ikd8 12 0-0 b6 13 'ika4 ~b7 14 b4 ttJg4 IS :lael fS 1) 11 ~d3 (Damm-E.Schwarz, Bundesliga worn 199112) ll...b6 12 'ika4 ~d7 13 cxb6 'ikxb6 14 'fia3 1. d3) 9 ... ~e7 10 ~e2 ~c7 11 ttJf3 (11 f4 b6 12 b4 as 13 ttJa4 ttJd7 14 cxb6 ttJxb6 IS bS ttJxa4 16 'ikxa4 ~d7 17 bxc6 ~xc6 +; 11 0-0 eS {1l...b6!? 12 b4 eS with counterplay} 12 dxeS ~xeS 13 ttJf3 'ikc7 =) 11...0-0 120-0 (12 ~a4 ttJd7 13 0-0 eSleads to equality) 12 ... ttJd7 13 b4 eS and Black has good play.

F21)

9 ~e2 (D)

B

9 ...0-0 An alternative is 9 ... eS 10 0-0 (10 cxdS cxdS 11 ~bS+ - 9 ~d3 e5 10 cxd5 cxd5 11 ~b5 +) 1O... exd4 11 exd4 0-0 12 cS ~f4 (12 ... ~b8 13 g3 ~h3 14 l:tel 'ikd8 = Salzberg-Kehres, Bad Zwesten 1998) 13 :leI l:te8 100-0 10 cS!? ~e7 (or 1O... ~b8 11 f4 'ikc7 120-0 b6 13 ttJb3 bS 14 ~d3 as =) 11 0-0 'ikc7 12 ttJf3 b6 13 b4 as 14 ttJa4 ttJd700. 10.•• e5 Other moves: a) 1O... l:te8 11 cS (11 a3 'ikd8, Salzberg-Karer, Nova Gorica 1998,12 ttJf3 b6 13:leI ~b7 =) 1l...~e7 12 'W\Vc2 eS 13 dxeS ttJd7 14 e4 'fixcs IS exdS cxdS 16 ttJb3 'W\Vc7 17 ~d3 ttJf8 18 l:tfe 1 1. b) 1O... a6 11 cS ~e7 (1l...~b8, Lukac-Kujovic, Bratislava 1998, 12 f4 filc7 13 ttJa4 1) 12 l:tbl filc7 13 ttJf3 ttJd7 14 ~d3 eS IS ~fS e4 16 ttJd2 (16 ttJel b6 17 ~xd7 ~xd7 18 cxb6 'ikxb6 19 f3 fS =) 16 ...b6 17 cxb6 (17 b4 as) 17 ... ttJxb6 18 ~xc8 :laxc8 19 b4 fS = intending ... ~d6. 11 dxe5

+.

7 Lf6 IIlbb3 'fIc7 12 cxdS (12 h3 dxc4 13 i.xc4 ..tfS +) 12 ...lbxdS 13lbxdS cxdS 1·lllc 1 "fie7 with good play for Black. 11 ....i.xeS 12 cxdS .i.xc3 13 lbb3 13 bxc3lbxdS 14 c4lbc3 is slightly hl'lIcr for Black, Antreasyan-H.Olsen, ( 'opcnhagen 1993. 13..."fixdS 14 bxc3 "figS Black has a good position. F22) 9 .i.d3 0-0 (D) Other continuations lead to slightly hetter positions for White: a) 9 ... eS 10 cxdS cxdS 11 ..tbS+ 'J.>f8 12 lbb3 1i'b6 13 .:tel exd4 14 -.xd4 "fixd4 IS lbxd4 ..te6 16 ..td3 .l:tc8 17 We2;1;;. b) 9 ..."fic7 10 cS .i.e7 l1lbf3 (11 f4 h6 12 M as 13 a3 0-0 140-0 ..ta6 is equal, Zimmermann-Gerhardt, Chemnitz 1998) l1...lbd7 120-0 eS 13 .i.fS l'xd4 14 exd4 0-0 IS .:tel .:te8 16 .:te3 41f6 17 .i.xc8 .:taxc8 18 "fid3 b6 19 M a5 20 a3;!;.

10eS Other moves do not cause Black any problems either: a) 10 f4 cS 11 lbb3 "fib6 12 0-0 (Atir-Mateus, Thessaloniki OL 1984)

35

12... ..td7 13 cxdS exdS 14 dxcS i..xcs Islbxcs "fixcs with a slight advantage for Black. b) 10 "fic2 eS 11 dxeS ..txeS was played in T.Rohde-Zander, Germany 1995/6, and now 12 cxdS ..txc3 13 bxc3 cxdS 14 l:.bl 'fic7 is equal. c) 10 0-0 eS 11 lbb3 (or 11 cxdS exd4, O.Johansen-H.M.Hansen, Gausdal 1993, 12 lbc4 "fic7 13 lbxd6 dxc3 14lbxc8 cxb2 IS .:tbl =) 11..:~d8 12 cxdS cxdS (12 ... exd4 13 lbxd4 lbxdS 14lbxdS, Soto-Boettner, Buenos Aires OL 1939, 14... cxdS IS lbbS ..tb8 16 .:tel ;!;) 13 dxeS ..txeS 14 h3 (14lbd4 'fie7 IS ..te2 .:td8 16 ..tf3 ..te6 = Fabian-Kriz, Slovakia 1998) 14 ... ..te6 IS 'fif3 .:tc8 16 .:tael i..b8 17lbe2 'ii'd6 = Verholt-Muhren, Dieren 1999. 10•••..te7 1O ... .i.b8 (Brito-de Souza, Bello Horizonte 1997) 11 f4 'ii'c7 120-0 b6 13 M;!;. 11 0-0 eS 12 dxeS lbd7 13 'fic2 13 lbb3 "fic7 14 "fic2 (14 e4 d4) 14 ... "fixeS ISlbe2 g6 =. 13••. h614 a3 14 e4 dxe4 IS lbcxe4lbxeS 16 lbb3 'fic7 =. 14••."fixcs 15 b4 'ifb6 16lbr3 .:teS 17 .:tre1 as Black has a good game. F3) S•.•..tb4 Black is still seeking to exploit the slight exposure of the c3-knight. 9 "fic2 (D) Or: a) 9 'iVcl 0-0 10 ..te2 (10 a3, Janeckova-Berea de Montero, Buenos Aires worn Wch 1939, 1O... ..te7!? 11 ..td3 dxc4 12lbxc4 'ii'gS 130-0 {13 g3

36

THE CAMBRIDGE SPRINGS

c5} 13 ...e5 =intending ...Jt.h3) 1O.. .1le8 (10 ... 'iVc7!? 11 ltJf3 {11 0-0 b6 =} l1...dxc4 12 i.xc4 c5 =) 11 a3 Jt.d6 (l1...Jt.f8 12 b4, Grob-Canal, Venice 1948, 12 ... 'iVc7!? 13 0-0 a5 14 b5 c5 =) 12 c5 i.e7 13 b4 'iVc7 14ltJf3ltJd7 and Black plays ... e5 and obtains a good game. b) 9 'iVb3 0-0 (9 ... c5 10 dxc5 Jt.xc3 11 'iVxc3 'iVxc5 12 b4 'iVc7, EveretLeer Salvesen, Szombathely U-16 Ech 1993, 13 ':el 0-0 14 cxd5 'ii'xc3 15 %:txc3 ltJxd5 16 ':c4 Jt.d7 =) 10 Jt.d3 (10 Jt.e2 e5 11 dxe5 ltJe4 12 liJdxe4 dxe4 13 %:tel Jt.xc3+ 14 'iVxc3 'ii'xc3+ 15 %:txc3 ':e8 160-0 112-112 Ie. HorvathSomodi, Budapest 2000) 1O... Jt.d6 (or 1O... dxc4, Koper-Hruby, Prague 1995, 11 ltJxc4 i.xc3+ 12 bxc3 ;t) 10... c5, Mollero-Scotti, Celle Ligure 1997, 11 a3!? cxd4 12 'iVxb4 'ii'xb4 13 axb4 dxc3 14 bxc3 with a slightly better ending for White due to the a-file) 11 'iVc2 e5 12 dxe5 Jt.xe5 13 cxd5 cxd5 (the alternative 13 ... Jt.xc3 14 bxc3 cxd5 is also equal) 14liJf3 i.b8 = Kovar-Ptacnik, Moravia 1991.

B

Lf6 0,xf6. Other moves are less popular: b) 9 ... Jt.d7 10 i.d3 (10 i.e2 0-0 11 0-0, Ostermeier-Rahn, Stlngbert 1991, 11...'iVc7 12 a3 i.d6 13 h3 b6 is level) 10... 0-0 11 a3 %:tfe8 12liJb3 Jt.xc3+ 13 'iVxc3 ;to c) 9 ... dxc4 10 i.xc4 (10 liJxc4 'iVd5 11 0-0-0 i.xc3 12 'iVxc3 0-0 13 f3 c5 14 e4 cxd4 15 'iVxd4 'iVxd4 16 ':xd4;t Remon-Meiramas, Fuerteventura 1992) 1O ... liJd5 11 ':el (II liJxd5 cxd5 12 Jt.d3 i.d7 13 a3 %:tc8 14 'iVdl Jt.d6 +) 11...0-0 12 0-0 i.d7 13 liJb3 'iVd8 14 liJe4 ;t MundIe-Merino Mejuto, Manila OL 1992. d) 9 ... i.d6 10 c5 i.b8!? (l0 ... Jt.e7, Ribeiro-Sousa,Odivelas 1995, 11 Jt.d3 'iVc7 12ltJf3liJd7 13 e4 dxe4 14liJxe4 ;t) 11 f4 (11liJf3 e5 12ltJxe5 Jt.xe5 13 dxe5 liJd7 14 'iVd2 ltJxc5 =; 11 liJb3 'iVd8 12 f4liJg4 131j'e2ltJh6 14 'iVf2 f6 15 i.d3 e5 16 0-0 e4 =) l1...liJg4 12 'iVd3 f6 13liJb3 'iVd8 14 Jt.e2 e5 150-0 e4 16 'iVd2 0-0 =. e) 9 ...i.xc3 10 bxc3 (10 'iVxc3 'iVxc3 11 bxc3 b6 12 %:tel Jt.a6 =) 1O... b6 (1O ... ltJe4 l1liJxe4 {II l:lelliJxd2 12 'iVxd2 0-0, Plieger-Wolf, Goetzis 1997, 13 cxd5 ;t} l1...dxe4 12 i.e2 0-0 13 0-0 f5 14 'ii'b3, Hook-M.Said, Thessaloniki OL 1984, 14... e5 15 ':adl ;t) and now: el) 11 Jt.d3 Jt.a6 (l1...i.b7, FetzerKraemer, Germany 198617, 12 a4 ±; e.g., 12 ... c5 13ltJb3 'ii'a6 14 'ii'e2 %:tc8 15 a5) 120-00-0 - 7liJd2 Jt.b4 8 'ii'c2

0-0 9 Lf6 lbxf6 10 Jt.d3 b6 11 0-0 hc3 12 bxc3 Jt.a6.

Now:

F31: 9...liJe4 F32: 9...b6!

Or: a) 9... 0-0 - 7ltJd2 i.b4 8 'ikc2 0-0 9

37 37

e2) 11 cxd5 liJxd5 12 ':el Jt.a6 (12 ... liJf6 13 Jt.d3 i.a6 14 c4 ;t) 13

7Lf6 .i.xa6 'tixa6 14 c4liJf6 150-00-016 e4 IIlId White's central pawn-mass gives him an advantage. F31) 9••• liJe4

Black's most natural and consistent Illove, but he is slightly neglecting his development. 10 liJexe4 Other continuations: a) 10 liJdxe4 dxe4 and then: al) 11 .l:.el 'ifxa2 (l1...f5 12 a3 i.d6, Ibrahim-Ianahi, Kuala Lumpur 1993, 13c5..tb814..tc4;1;) 12..te2f5 13 0-0 'tia5 14 c5 'ifd8 15 'ifb3 ..ta5 with compensation. a2) 11 c5 (Kalus-Lutat, BernkastelKues 1995) l1...b6 12 cxb6 axb6 13 i.c4 i.a6 14 ..txa6 ..txc3+ 15 bxc3 ~xa6 16 'tixe4 'ii'c4 = intending ... 0-0, ... l:I.a3/a4 and ... .l:.fa8. a3) 11 ..te2 e5 120-0 f5 (12 ... ..txc3 13 bxc3 {13 'ifxc3 'tixc3 '12-'12 Iohanscn-Glenne, Gausdall993} 13 .....tf5 14 l:I.fdl, Sirletti-Fittante, Mantova 1996, 14 ... 0-0 15 .l:.abl b6 16 l:lb3 .l:.fd8 17 ~b2 exd4 18 cxd4 ;1;) 13 a3 i.xc3 14 hxc3 0-0 15 ':fdl ':b8 = intending ... f4. b) 10 .l:.clliJxd2 (10 ...0-0 l1liJdxe4 dxe4 12 'ifxe4 ..txc3+ 13 ':xc3 'tixa2 14 'iVc2 ;I; Oshiro-Frenklakh, Concord 1995) 11 'tixd2 0-0 12 ..te2 dxc4 13 ..txc4 (Tatai-Borgo, Italian Ch 1998) 13 ... e5 14 a3 i.e7 15 liJe2 'tic7 =. 10.•.dxe411 a3 i.xd2+ l1...f5 12 l:ldl (12 :tel i.e7, Studer-Petyko, Switzerland-Hungary 1988, 13 c5 i.f6 14 b4 'tic7 15liJc4 is slightly

37

better for White) 12 ... i.e7 (VodickaMeulner, Bavaria 1995/6) 13 c5 ..td7 14 ..tc4;1;. 12 'ii'xd2 'ii'xd2+ 13 ~xd2 0-0 14 ..te2 e5 14 ...:td8 15 ~c3 b6 16 f3 exf3 17 ..txf3 ±. 15 dxe5 ':e816 ':hdl':xe517 ~e3 White has a small advantage in the ending. F32)

9...b6! This move is not as popular as it deserves to be. 10 liJb3 10 i.d3 i.xc3 11 bxc3 - 9... Ld 10 bxd b6 11 ..td3. 10••.'tia4 Or 1O... ..txc3+ 11 'ii'xc3 (11 bxc3 'tia4 12 cxd5 cxd5 13 :tel 0-0 14liJd2 'ii'a5 15 c4 ..tb7 with a good game for Black) 11...'tixc3+ 12 bxc3 ..ta6 =. 11 a3 11 ..td3 .i.a6 12 cxd5 cxd5 13 0-0 .i.xc3 14 ..txa6 'tixa6 15 'tixc3 0-0 =t. 11 •.•..txc3+ 12 'tixe3 liJe4 13 'tie2 e5 14 ..td3 dxe415 'ifxe4 15 i.xc4 liJd6 16 ..td3 c4 17 liJd2 'tixc2 18 .i.xc2 ..tb7 19 f3 :lc8 20 ,""e2 ~e7=.

15..•'ifxe4 16 ..txe4 exd4 17liJxd4 ..tb7 18 .l:.c1 .l:.e8 19 0-0 ,""e7 20 ..td3 a6 The ending is equal. We may conclude that 7 ..txf6 offers White no advantage, and that Black has a number of satisfactory ways to handle the positions that arise.

3 7 cxd5: Introduction and Minor Lines 1 d4 d5 2 c4 e6 3 ttJc3 ttJf6 4 iLg5 ttJbd7 5 ttJf3 c6 6 e3 'iVa5 7 cxd5 This is the most principled, consistent and energetic move at White's disposal, by which he intends to take advantage of Black's early queen move. White is willing to embark upon sharp, forcing play, often involving a sacrifice ofapawn. Black must immediately take a very important decision. The main line is 7 ... ttJxd5, which is discussed in the next two chapters. Here we consider three rare alternatives. After 7... cxd5 (Line A) Black is very passive. The position resembles an Exchange Slav but the positions of the a5-queen (in many lines it is useless and has to go back on c7 or d8 at the cost of one or two tempi), the d7 -knight and the c8-bishop are very passive. Although Black has no vulnerable points and the pawn-structure is symmetrical, this line definitely cannot be recommended, especially for chess-players who like active play, as Black is deprived of any counterplay. Another attempt is the very interesting and somewhat extravagant countergambit 7... ttJe4 (Line B). Black tries to play very actively, immediately attacking the pinned c3-knight and the g5-bishop. Unfortunately, a detailed analysis of this line shows that Black

cannot count on equality after 8 dxe6 fxe6 9 'iVa4 (or 9 i.h4). 7 ... exd5 (Line C) appears slightly better. We then have a modified form of Exchange Queen's Gambit. Black's queen can easily prove to be misplaced: it could allow White's minority attack to proceed with gain of tempo, and also makes impossible the move ... a5 aimed against this minority attack. However, unlike 7 ... cxd5, in some lines Black is able to justify ... 'iVa5 by a rapid ... ttJe4. Only 8 ttJd2 guarantees White an edge. Let's have a look at a nice tactical idea.

B

Black cannot play 12...'iVxa2 due to 13 i.d61 i.xc3+ 14 'iVxc3 l:te8? 15 i.c4 'iVa4 16 b3, trapping the queen. 1 d4 d5 2 c4 e6 3 ttJc3 ttJf6 4 i.g5 ttJbd7 5 tt:Jf3 c6 6 e3 'iVa5 7 cxd5 (D)

7 cxd5: INTRODUCTION AND MINOR LINES

39

16 ttJxd7 ttJxd7 17 e4 ttJf6 18 exd5 ;I; 1/2- 1/2 S.lvanov-Sveshnikov, Vrnjacka /I

Now: A: 7...exd5

n: 7...ttJe4

c:

7... exd5

39 39 41

A)

7•.•exd5 As discussed above, this is a rare and ineffective move. 8 ttJd2 Or 8 iod3 ttJe4: a) 9 'iib3 ttJxg5 10 ttJxg5 (C. TorreRubinstein, Moscow 1925) 1O... ioe7 II ttJf3 a6 120-0 b5 13 a3 0-014 :Ifcl 4'lf6 =. b) 9 'ilfc2 ttJxg5 (9 ... iob4 10 0-0 h6 11 ioh4 ttJxc3 12 bxc3 iod6 13 c4 uxe4 14 'ilfxc4 ;!;) 10 ttJxg5 h6 11 ttJf3 (Kramer-Van Steenis, Beverwijk 1963) 1l...i.e7 12 0-0 0-0 13 :Ifel ttJf6 14 'iVe2 ;!;. e) 90-0 ttJxg5 (9 ... ttJxc3? 10 bxc3 'iVxc3 11 nel 'iia5 12 'ilfc2 ttJb6 {not 12 ... ttJf6?? 13 'ii'xc8+ +-} 13 ttJe5 iod6 14 iof4 ±) 10 ttJxg5 ioe7 11 ttJf3 (11 iVh5 ioxg5 12 'ii'xg5 0-0 13 :Ifel ttJf6 14 a3 iod7 15 b4 'ii'b6 1/2- 1/2 Jovicic-Ciric, Belgrade 1991; White's position is better, but it's difficult to make any progress) 11...0-0 12 a3 a6 13 b4 'iVd8 14 'ilfb3 ttJf6 15 ttJe5 iod7

Banja 1999. 8•••iob4 9 'ilfb3 Other moves also deserve attention: a) 9:Iel ttJe4 (Renaze-Zorman, Lugano 1989) 10 ioh4 ttJxc3 11 bxc3 ioxc3 12 'ilfc2 ioxd2+ 13 'ilfxd2 'ii'a4 14 ioe2 with compensation. b) 9 'iic2 b6 (Khairunnisa-Itaas, Erevan worn OL 1996) 10 l:tcl j"a6 11 a3 ioxc3 12 'iixc3 'ilfxc3 13 l:txc3 ioxfl 14 :Ixfl
7..•ttJe4 (D) This aggressive move has a poor reputation, but White needs to play boldly and accurately.

40

THE CAMBRIDGE SPRINGS

w

8dxe6 The most consistent move. Other continuations are much weaker: a) 8 ~b3 (Castany Pampalona-Parramon, Juvenil 1997) 8 ... exd5 9 .id3 .ib4 10 ~c1 tiJb6 11 .if4.if5 12 .ixe4 .ixe4 13 tiJd2 .if5 with a slightly more pleasant position for Black. b) 8 tiJd2 and then: bl) 8 ... tiJxd2 9 ~xd2 exd5 10 .id3 .ib4 11 0-00-0 12 a3 .ixc3 13 ~xc3 (13 bxc3 ~e8 = Marshall-Teichmann, Cambridge Springs 1904) 13 ... ~xc3 14 bxc3 t. b2) 8... tiJxg5 9 dxc6 tiJf6 10 .ib5 was played in Lorens-Ticoulat, Barcelona 1934, and now 1O... ~e7 11 .id3 h6 12 tiJc4 ~c7 13 tiJe5 ~e8 14 f4 tiJgh7 15 cxb7 'ii'xb7 16 0-0 gives White compensation for the sacrificed piece. 8 .•.fxe6 8 ... tiJxg5 9 tiJxg5 it'xg5 10 exd7+ .ixd7 11 ~b3 ~b8 12 ~d1 .ie7 13 d5 ~e5 (13 ... 0-0 14 d6 .id8 15 'iVa3 is also much better for White) 14 .ie2 0-0 15 ~a4 ±. Now there are two moves that give Black problems: Bl: 9.ih4 40 B2: 9~a4 41

B1) 9 .ih4 .ib4 10 tiJd2 tiJxe3 11 bxe3 .ixc3 12 .l:tc1 tiJf6 Other moves: a) 12 ... e5?! is strongly met by 13 .ic4 exd4 14 exd4 tiJf6 15 ~c2 ± Tukmakov-Ljubojevic, London tt 1984. b) 12... 0-0 deserves attention: bl) 13 'iVc2 .ib4 14 .id3 e5! (or 14... ~h8 15 ~dl e5 16 0-0 exd4 17 exd4, Ehlvest-Smagin, Minsk 1986, 17 ... tiJb618 tiJe4 .ie6 =) 15 a3 (15 d5 cxd5 16 .ixh7+ ~h8 17 .ig6 e4 +; 15 .ixh7+ ~h8 16 .id3 exd4 17 ~dl tiJf6 +; 15 ~dl exd4 16 exd4 ~e8+ 17 ~f1 'iVh5 18 it'b3+ ~h8 19 tiJf3 a5 +) l5 ... ~xa3160-0.ixd217~xd2exd4 :t . b2) 13 .id3 .ib4 14 .l:tc2 e5 150-0 exd4 16 tiJb3 favours White. 13 .id3 e5 No better is 13 ....id7 14 ~c2 (preparing to play 150-0, so Black must act quickly if he is to have any prospects of justifying his play) 14 ... e5 (l4 ... c5, Ornstein-Hector, Uppsala 1985, and now 15 .ixf6 gxf6 16 ~h5+ ~e7 17 'iVxc5+ it'xc5 18 dxc5 ±) 15 dxe5 .ixe5 16 0-0 .ic7 (Gorelov-Novopashin, Volgodonsk 1981) 17 tiJb3 ±. 14.ixf6 Or 14 dxe5 .ixe5 150-0 .ig4 (Cvitan-Ljubojevic, Yugoslav Ch 1982) 16 ~c2 and Black has serious problems; e.g., 16 .. .'iVc7 17 f4.id6 18 .ixf6 gxf6 19 .if5 ±. 14... gxf6 14 ... ..txd2+ 15 ~xd2 ~xd2+ 16 ~xd2 gxf6 17 dxe5 fxe5 18 ~c5 0-0 19 f3 ~e8 20 ~bl ±. 15 dxe5 .ixe5 160-0 ..te6 17 .ie4 .if5 18 tiJb3 file7 19 tiJd4 White has an obvious advantage.

7 cxd5: INTRODUCTION AND MINOR LINES 82) 9 llVa4 'ii'xa4 10 ltJxa4 .1b4+ 11 <J.>e2 b5 Other moves do not give chances for equality either: a) ll...ltJx!,S 12 ltJxgS eS (l2 ...bS 13 ltJc3 eS 14 a3 .1aS IS ltJf3 ±) 13 l:tdl exd4 14l:f.xd4 .1e7 IS h4ltJf6 16 lhc3 ±. b) ll...b612.1h4.1a6+(l2 ... cS13 a3 .1aS 14 l:f.c1 h6 IS ltJc3 .1a6+ 16 Wdl.1xfll7l:f.xfl ±) 13 'i.fi>dl.1bS 14 ~xbS cxbS IS a3.1aS 16 b4 .1xb4 17 axb4 bxa4 18 'i.fi>e2 bS 19 l:f.hc1 ±. 12 a3!? Much worse is 12 ltJc3 ltJxc3+ 13 bxc3.1xc3 14l:f.c1 b4 IS 'i.fi>dl (Rubinstein-Reti, Berlin 1928) IS ... .1b7 16 ~c4 eS =. 12..•.1a5 No better is 12 ... ltJxg5 13 ltJxgS .1e7 14 ltJxe6 bxa4 IS ltJc7+ 'iti>d8 (l5 ... ~f7 16ltJxa8 .1b7 17ltJc7 .1d6 18 ':c 1 .1xc7 19 f3 We7 20 ~f2 .1b6 21 .1c4 ±) 16ltJxa8 .1b7 17 g3!? (17 e4 cS 18 dS .1xa8 19 ~d2 .1f6 20 l:f.bl .1d4 21 .1bS ±) 17 ... c5 18 dS .1xa8 19 .1g2 .1f6 20 l:.abl ±. 13ltJc3 Less effective is 13 ltJcs ltJdxcS 14 dxcS b4 IS axb4 (IS .1h4 bxa3 16 l:f.xa3 .1b4 17 l:.al as 18 ~d3 ltJxcS+ 19 ~c2 0-0 -15 axb4 Lb4 16 .1h4 a5 17 ~dl 0-018 'i.fi>c2 lDxc5) IS ... .1xb4 16 .1h4 as 17 ~d I 0-0 18 ~c2 ltJxcS 19 l:f.d I .1a6 20 .1xa6 (20 ltJd4 l:f.fc8 21 .1xa6 l:.xa6 22 ltJf3 l:.b6 23 l:.d4 ;1;) 20 ... ltJxa6, and now: a) 21 l:.d7 l:f.fS 22 l:f.hdl (22 .1g3 !i.dS 23l:f.dl .1f8 24 e4lhdl 2Sl:f.xdl ltJcs 26 l:.d4 ;1;) 22 ... l:f.cS+ 23 ~bll:f.dS 24 e4 ':xd7 2S l:.xd7 ltJcs with sufficient counterplay.

41

b) 21 ltJeS hS 22 .1g3 (22 l:.hfl .1cS 23 ~bll:lfc8 24l:f.d7 ;1;) 22 ... l:.fb8 23 l:f.d7 (23 l:f.d4 l:f.bS 24 l:f.c4 l:f.c8 2S l:tdl .1e7 ;1;) 23 ... l:tbS 24 ltJf3 .1f8 2S l:f.hdl ;1;. 13..•.1xc3 13 ... ltJxc3+ 14 bxc3 .1xc3 IS l:f.c1 .1b2 16 ':xc6 .1xa3 17 l:f.xe6+ ±. 14 bxc3 ltJxc3+ 15 ~d2! ltJe4+ 16 ~el e517 .1h4! exd418ltJxd4 .1b7 18 ... ltJe5 19l:f.c1 .1d7 20 f3ltJd6 21 .1g3 ltJef7 22 .1d3 ±. 19 l:.c1 g5 19 ... a6 20 .1d3ltJecS 21 .1bl ±. 20 .1g3 a6 21 f3ltJxg3 22 hxg3 c5 22 ... ':c8 23 ltJfS +-. 23 ltJe6 ':c8 24 ltJxg5 h6 25 .1d3 ~e7 26ltJh3 Black has some counterchances on the queenside but they are not sufficient to compensate for the sacrificed pawn. White has a clear advantage.

C) 7.••exd5 (D)

Most authorities have dismissed this recapture, assuming that it simply leads to a normal Exchange Queen's Gambit, but with the black queen seriously misplaced on as. However, the

42

THE CAMBRIDGE SPRINGS

threat of ... ttJe4 causes some real inconvenience, and White has to play very carefully to obtain an edge. Now: Cl: 8 'ific2 42 C2: 8 'ifib3 42 43 C3: 8.1txf6 44 C4: 8 .ltd3 48 C5: 8 ttJd2 The last of these is the critical line. Other moves: a) 8.1th4 ttJe4 9 'ilib3 ttJb6 (9 ... .ltb4 10 %:tcl ttJb6 11 a3 .ltd6 12 .ltd3, Xu Jun-Ljubojevic, Thessaloniki OL 1988, 12 ... .ltf5 =) 10 %:tcl .ltd6 11 .lte2 i.g4 12 ttJgl .ltxe2 13 ttJgxe2 0-0 Maksimenko-Karasev, Riga 1988. b) 8 a3 ttJe4 transposes to the note to Black's 8th move in Line C3 of Chapter 1. c) 8 l:!.cl i.b4 (8 ... ttJe4 transposes to Line E of Chapter 1, which is equal) 9 'ifib3 ttJe4 10 .ltd3 ttJb6 11 i.f4.1tf5 12 0-0 .ltxc3 13 bxc3 ttJd2 14 ttJxd2 i.xd3 =.

+

CI) 8 'ific2 This move is extremely normal in the Exchange QGD, but does nothing about Black's ... ttJe4 idea. So ... 8 .•.ttJe4 Worse is 8... .ltd6?! 9 .ltd3 0-0 10 0-0 h6 (1O .. .l:te8 11 a3, de la Vega-Foguelman, Mar del Plata 1967, 11...'ific7 12 .lth4 a6 13 %:tfel ;!;) 11 .lth4 %:te8 (ll...ttJh5!? 12 e4 ttJf4 13 .ltg3 dxe4 14 ttJxe4 .ltb8 ;!;) 12 a3 'ific7 (12 ...'ifid8 13 l:tael, Short-Andersson, TallinnIPamu 1998, 13 ... ttJb6!? ;!;) 13 %:tfel 'ilib8 (alternatively, 13 ... a614 b4 'ifid8 15 %:tab 1, Trifunovic-Tekavcic, Zagreb 1946, 15 ... ttJb6!? ;!;) 14 b4 g5 15 .ltg3 .ltxg3

16 hxg3 'ifid6 17 l:te 1 (VladimirovGarcia Ilundain, Seville 1990) 17 ... a6 ;!;. The text-move (8 ... ttJe4) transposes to Line F3 of Chapter 1, which is equal. C2)

8 'ifib3 ttJe4 Naturally. 9.1tf4 9 i.h4 (9 .ltd3 i.b4 10 l:tel, Kashdan-L.Steiner, New York (3) 1930, 1O... ttJb6!? =) 9 ... i.b4 10 %:tel ttJb6 (10 ... 0-0 11 a3 .ltd6 12 .ltd3 l:!.e8 13 0-0 ttJdf6 = Wirthensohn-Ipek, Haifa 1989) 11 a3 i.d6 12 .ltd3, and now: a) 12 ... ttJxc3 13 'ifixc3 'ifixc3+ 14 l:txc3 i.g4 15 ttJd2 .lth5 16 .ltg3 0-0-0 17 i.xd6 l:txd6 18 b4 (18 f3 .ltg6 19 .ltxg6, Xu Jun-Ljubojevic, Thessaloniki OL 1988, 19 ... l:txg6!? 20 ~f2 f5 =) 18 ... .ltg6 19 .lte2 l:te8 20 h4 (20 b5 ~c7 21 h4;!; with the point 2l...ttJa4 22 %:tel ttJb2 23 ttJf3) 20 ... ttJa4 21 %:tcl ttJb2 22 b5 ttJd3+ 23 .ltxd3 i.xd3 24 bxc6;!;. b) 12 ... .ltf5!? 13 'ific2 ttJxc3 14 'ifixc3 'ifixc3+ 15 %:txc3 i.xd3 16 %:txd3 a5 17 .ltg3 .ltxg3 18 hxg3 ttJc4 and Black has a good ending. 9....ltb4 10 l:!.c1 c5 Other moves: a) 1O...b6 (Garbett-Spain, New Zealand Ch 1989) 11 a3!? i.xc3+ 12 bxc3 .lta6 13 'ilib4 'ifixb4 14 cxb4 is slightly better for White. b) 10... 0-0 11 .ltd3 c5 12 .ltxe4 dxe4 13 ttJd2 cxd4 14 exd4 ttJf6 15 ttJc4 .ltxc3+ 16 l:txc3 'ifia6 with an equal position. 11 a3 .ltxc3+ 12 bxc3 c4 12 ... 0-0 13 .lte2 =Golubev-Botvinnik, Leningrad 1926.

7 cxd5: INTRODUCTION AND MINOR LINES 13 'iVb2 13 'iVb4 'ifixb4 14 axb4 as (14 ... ttJb6 l'i ttJd2 Ji.f5, Denker-Willman, New York 1933, 16f3!?ttJxd217'it>xd2is slightly better for White) 15 bxaS l:.xa5 I() ttJd2 ttJxd2 17 'it>xd2 (HammondIkrrak, Leopoldsburg 2000) 17 ... ttJf6 I X f3 Ji.e6 =. 13...0-0 14 ttJg5 ttJef6 Both sides have chances, Mousa( )sman Gadir, Dubai OL 1986. C3)

8 Ji.xf6 White radically prevents the ... ttJe4 idea, but at the cost of the bishop-paira high price. If White is able to launch an extremely rapid minority attack on the queenside, this might be justified, however. 8.•.ttJxf6 9 i..d3 Or: a) 9 'ifia4 'iVb6 (9 ... 'iVxa4 10 ttJxa4 liJe4 11 I:tcl i..b4+ 12 ttJc3 i..f5 +) 10 ~c2 (Zankl-Knechtel, Germany 1993) IO... Ji.f5! 11 'iVc1 (11 'iVxf5 'iVxb2) I I ... Ji.d6 gives Black a slight advantage. b) 9 ttJd2 Ji.d6 10 Ji.d3 'iVc7 (10 ...0-0 11 'iVc2 I:te8 12 h3 'iVd8 13 0-0 'iVe7 is equal, Aldecoa-Prieto Azuar, Munich OL 1958) 11 h3 0-0 12 I:tcl 'iVe7 13 0-0 Ji.e6 with equality, Lesecq-Mapelle, Paris 1993. c) 9 'iVc2 i..b4 (9 ... Ji.d6 10 i..d3 {1O h3!? =} 10... 0-0 {1O ... Ji.g4!?} 11 0-0 I:te8 12 l:.fc1 Ji.g4 = Meixner-Pfaffel, St Veit 1995) 10 Ji.d3 0-0 (10 ... i..g4 11 ttJd2 ~6 {11...0-0 12 0-0 'iVd8 = is slightly more accurate} 12 0-0 0-0 is equal, Van der Linden-Thissen, Hengelo 1995) 11 0-0 l:te8 (11...Ji.xc3?!, Arribas-C.Jensen, Santiago girls Wch

43

1990, 12 bxc3 c5 13 c4 dxc4 14 Ji.xc4 ;!;) 12 l:tfcl Ji.d6 =. 9 .••i..b4 Or: a) 9 ... Ji.d6 10 'iVc2 0-0 (1O ...h6 11 0-00-012 l:tfcl Ji.e6 13 a3, GinsburgGallagher, Chicago 1985, 13 ... 'iVd8 14 b4 'iVe7 =) 11 0-0 Ji.e6 (11...l:te8 12 h3 g6 13 I:tac1 Ji.d7 = Marshall-Jaffe, Bath Beach 1909) 12 a3 'iVc7 13 h3 h6 = Harana-Psarouda, Athens 1996. b) 9... Ji.g4 10 0-0 (10 'iVc2, VojirRozkovec, Svetla nad Sazavou 1998, lO ... Ji.xf3!? 11 gxf3 Ji.b4 is equal) 1O ... Ji.d6 11 h3 (11 Ji.e20-0 12 h3 Ji.f5 {12 ... Ji.h5!?} 13 i..d3, Meixner-Walkner, Werfen 1992, 13 ... Ji.e4!? 14 Ji.xe4 ttJxe4 offers Black good play) ll...i..h5 12 i..e2 'iVc7 13 I:tcl a614 ttJh4 is equal after both 14 ... Ji.g6 (Boskova-Martinkova, Chrudim 1994) and 14 ... i..xe2. 10 'iVc2 0-0 1O ... i..xc3+ 11 bxc3 'iVc7 12 0-0 i..g4 13 ttJe5;!; Kolb-Fuerderer, Donaueschingen 1985. 11 0-0 h6 12 a3 12 ttJe5 'iVc7 13 a3 i..d6 14 f4 'iVe7 (Rosbach-Teupe, Wallertheim 1994) 15 e4 dxe4 16 ttJxe4 =. 12... i..d6 13 I:tfel 13 :ac1 a6 14 'iVd2 (14 b4!? is another idea) 14... 'iVc7 15 h3 :e8 16 i..bl (Heinzein-Bascope, Pan American Ch 1997) 16 ...'ifie7 with a good game for Black. 13...:e8 14 h3 i..e6 15 ttJe5 'iVc7 15 ...i..xe5 16 dxe5 ttJd7 17 f4 ttJf8 18 b4 ;!; Schroth-Karg, Bemkastel-Kues 1995. 16 ttJf3 l:.e7 17 ttJa4 ttJe4 18 ttJc5 i..f519 :ec1 I:tae8 A position of dynamic equality has arisen.

44

THE CAMBRIDGE SPRINGS

C4) 8 i.d3 (D)

B

A natural developing move. Now: 44 C41: 8...i.b4 C42: 8....i.e' 4S C43: 8...ltJe4 4S Less popular is 8 ... i.d6?! 9 0-0 (9 'lWc2 - 8 'tWc2 .i.d6?! 9 .i.d3) 9 ... 0-0 10 a3 (10 'iic2 - 8 'tWc2 .i.d6?! 9.i.d3 0-0100-0) 1O... a6 11 l:.cl l:.e8 12 'iic2 h6 13 i.h4 gS 14 .i.g3 .i.xg3 IS hxg3
8...i.b4 Black continues to give the play a Cambridge Springs feel, but White is able to develop conveniently. 9 'iic2 The sacrifice 9 0-0 i.xc3 10 bxc3 'iifxc3 is less convincing: a) 11 l:.c1 'iiaS (1l...'lWa3!? is also possible) 12ltJeS (12 'ii'c2!? with compensation) 12... ltJxeS (12 ... 'iifxa2!?) 13 dxeS (Galvanek-Ruman, Martin 1996) 13 ... ltJd7!? +. b) 11 'iie20-0 12l:.fc1 'iiaS (Black can also try 12 ... 'lWa3 !?) 13 l:.abl .:te8

gives Black an extra pawn that is hard to exploit, though in Fiedler-Vavra, Hradec Kralove 1994 he didn't even try: 14 i.h4 ltJe4 IS ltJel ltJf8 16 f3 ltJd6 lh-1f2. 9•••0-0 Or 9... h6 10 .i.h4 (10 .i.f4 ltJhS 11 i.eS 0-0 12 0-0 ltJxeS 13 dxeS .:te8 14 h3 ;;t) 1O... 'iifc7 11 i.g3 i.d6 12 .i.xd6 'iixd6 13 0-00-0 14l:.abll:.e8 IS b4 as (1S ... ltJb6 16 .:tfc1 i.g4 17 ltJeS .i.e6 18 a4 ltJbd7 19 ltJxd7 i.xd7 20 bS ;;t) 16 bS cS 17 dxcS ltJxcs 18 .:tbc 1 i.g4 19ltJd4 ;;t. 100-0.:te8 Or 1O... h6 11 i.h4 .:te8 12 a3 i.d6 (12 ... i.xc3 13 bxc3 ltJe4 14 c4 ltJdf6 IS cxdS cxdS 16 .:tfbl a6 17ltJeS 'ii'd8 18l:.b2 ± Timmermans-Noire, Hyeres 1992) 13 b4, and now: a) 13 ... 'iifd8 14 bSltJf8 IS bxc6 bxc6 16 ttJa4 (16ltJe2 .i.d7 17 .i.g3 'iife7 18 ltJeS .:tec8 19 ltJxd7 ttJ8xd7 20 .i.xd6 'lWxd6 21 .:tfc1 ;;t Forintos-Bonnaire, AalandlStockholm 1997) 16... i.d7 17 i.g3 i.xg3 18 hxg3 ltJe6 19 ltJeS ± Planas-Lopez Martinez, Spanish Ch 1998. b) 13 ... 'lWc714l:.acl (14bSltJg41S i.g3 i.xg3 16 hxg3 ltJdf6 17 bxc6 bxc6 18 l:.fc1 ;;t Ikonnikov-Kincs, Budapest 1992) 14...'lWb8 (KorhonenHaanpaa, Naan 1997; it is difficult to propose any sensible alternatives; the only way to unpin is 14 ... gS!? but after IS .i.g3 .i.xg3 16 hxg3 White also has an advantage) IS bS ± with the point IS ... i.xa3 16l:.bl'IWc7? 17 bxc6 bxc6 18 ltJbS'lWaS 19 ttJxa3 'iifxa3 20 'lWxc6 ±. lli.h4 Other moves also give White a small advantage:

7 cxd5: INTRODUCTION AND MINOR LINES a) 11 h3 ..td6 12 a3 (12 ~h4!? inIl'l)(ling ~f5 ;t) 12 .. :~c7 13 l:.fcl a6 (Kullberg-Ellenberg, 2nd Bundesliga 11)92) 14 ~e2;t. h) 11 a3 ..txc3 12 bxc3 h6 13 ..tf4 gives White a small advantage, Negyl'sy-Gracs, Hungarian Ch 1951. 11.....td6 12 l:.ac1 h6 13 a3 White has the better chances, NillArmbruster, Lingen 1995.

45

C43)

8...~e4 (D)

C42) 8.•.i.e7 Black plays a standard move, but Ihis cannot justify his previous play.

90-00-0 Other moves: a) 9 .. :ii'd8 (an admission of failure) 10 ~c2 h6 11 ..tf4 ~f8 12 h3 ~e6 13 .ih2 ;t Vitasek-Mucha, COIT. 1968. b) 9...~f8IOe4(Hanko-Kijac, Trencin 1991) 1O... dxe4 11 ..txf6..txf6 12 l/)xe4 i.e7 13 l:.el liJe6 14 'ifc2 is slightly better for White. 10~e5

Or: a) 10 'ifc2 l:.e8 11 a3 'ifd8 (1l...~f8 12 b4 'ifd8 13 b5 ± Bilo-Ludewig, Steinheim 1975) 12 b4 h6 13..th4 ~e4 14 i.xe7 'ifxe7 IS bS ;to b) 10 a3 a6 11 b4 'ifd8 12 'ifc2 l:.e8 13 .i:!.abl ;t Sarno-Mijatovic, Belgrade 1986. 10•.•1i'd8 1O...l:.e8 (I.Rabinovich-Makogonov, USSR Ch 1927) 11 i.f4 h6 12 l:.cl liJxeS 13 i.xe5 'ifb6 14 'ifc2 i.g4 15 a3 liJd7 16 ..tf4 ;to 11 f4 l:.e8 12 'iff3 ~f8 13 l:.ae1 liJ6d7 14 i.xe7 l:.xe7 15 e4 dxe4 16 i.xe4 White is more active, TartakowerVerlinsky, Moscow 1925.

This is the most consistent reply.

90-0 White is willing to give up a pawn or the bishop-pair in return for a development advantage and the initiative. Otherwise: a) 9 l:.cl .i.b4 (9 ... ~xc3 10 bxc3 'fixa2 11 0-0 with compensation) 10 'iVb3 0-0 11 0-0 ~xgS 12 ~xgS ~f6 13 'iVc2 h6 14 liJh7 liJxh7 IS i.xh7+ ~h8 16 i.d3 'iVd8 =Bonoo-Akpanah, Thessaloniki OL 1984. b) 9 'fib3 ~xgS 10 ~xgS i.e7 11 ~f3 liJf6 12 0-0 0-0 13 h3 i.d6 14 'ii'c2 .:te8 = Reinfeld-Denker, New York 1933. c) 9 'ii'c2 ~xgS (9 ... fS 10 i.f4 i.e7 11 ~eS ~df6 12 a3, Miiller-Havasi, Gyor 1924, 12... ~hS 13 0-0 ~xf4 14 exf4 0-0 IS :fel ;t) 10 ~xgS h6 11 ~f3 and then: cl) 11.....tb4 12 0-0 0-0 (Spielmann-Gereben, Vienna 1935) 13 .:tfel l:.e8 14 a3 ..td6 IS b4 'fid8 16 bS ~f6 17 bxc6;t. c2) 1l.....te7 12 0-0 0-0 13 a3 a6 (13 ... i.f6 14 b4 'ii'd8 15 bS ~b6 16 bxc6 bxc6 ± Langeweg-Triger, Varna

46

THE CAMBRIDGE SPRINGS

1962; 13 ... ttJf6 14 b4 'ii'd8 15 ttJa4 ttJe8, Rauramaa-Haanpaa, Finnish Cht 1989, 16 ttJc5!?;1;; 13 ... 'ii'd8 14 b4 a6 15 :fbl .tf6 16 a4 ttJb6 17 :a2 .tg4 18 ttJd2 ;1; Chia-Hermiz, Dubai OL 1986) 14 :abl 'ii'd8 15 h3 .td6 16 b4 ttJf617 a4:e818 b5 (del Barrio-Montilla Carrillo, Barcelona 2000) 18 ...cxb5 19 axb5 as =. c3) 11... ttJf6 12 ttJe5 ttJg4 13 0-0 .td6 (13 ... ttJxe5 14 dxe5 'ii'c7 15 f4 'i!Vb6 16.l:tf3 i..e7 =) 14 ttJxg4 .txg4 15 e4 dxe4 (Akesson-Raicevic, Valjevo 1984) 16 .txe4 .l:td8 17 d5 =. c4) 11....td6 120-0 (12 g4 ttJf6 13 h3 i..e6 14 ttJh4 {14 O-O-O!?} 14... 0-0-0 15 ttJf5 .tf8 16 0-0-0 {16 ttJg3!?} 16 ...h5 17 g5 + 1/2- 1/2 Iskov-Hamann, Copenhagen 1975) 12... ttJf6 (12 ... 0-0?! 13 e4 dxe4 14 ttJxe4 .tf4, SavchenkoMahmud, Jakarta 1997, 15 :fel ;1;) 13 i..f5 (13 e4 dxe4 14 ttJxe4 ttJxe4 15 .txe4.te6 16 .l:tfel 0-0 with an excellent game for Black) 13 ... 0-0 14 a3 'i!Vc7 =. 9...ttJxg5 Instead: a) 9 ... f5 10 .txe4 dxe4 (1O ... fxe4 loses to 11 ttJh4 intending 'ii'h5+) 11 'ii'b3!? (11 ttJd2, Stahlberg-Villegas, Mar del Plata 1942, 11 ... 'ii'b4!? is just slightly better for White) 11...'ii'b4 12 'ii'e6+ .te7 13 ttJh4 ttJf6 14 'ii'e5 0-0 15 ttJxf5 ±. b) 9... ttJdf6 10 .txf6 ttJxf6 (after 1O ... ttJxc3 11 bxc3 gxf6 12 'i!Vc2 White is much better, Capablanca-Ed.Lasker, Lake Hopatcong 1926) 11 .l:tel (11 ttJe5?! i..b4 12 ttJa4 0-0 13 a3 .td6 is equal, Foguelman-Piazzini, Quilmes 1959) 11....te7 12 'ikc2 0-013 e4 dxe4 14 ttJxe4 h6 15 ttJc5 with a slight advantage for White.

c) 9 ... h6 10 .tf4 (10 i..h4 ttJxc3 {1O ... g5 11 .tg3 -10 .tf4 g5 11 .tg3} 11 bxc3 - 9... lilxc3 10 bxc3 h6 11 .th4) 1O... ttJxc3 (10 ... g5 11 .tg3 {II .te5 ttJxc3 12 bxc3 f6 13 i..g3 h5 14 .tg6+ ~d8 15 h4 with compensation} l1...ttJxc3 12 bxc3 'ii'xc3 13 e4 dxe4 14 .txe4 i..g7 15 .td6 with compensation) 11 bxc3 'ii'xc3 12 e4 'ii'aS?! (12 ... ttJf6) 13 exd5 cxd5? (13 ...'ii'xd5 14.l:tel+.te715'ii'e2'ii'e6;1;) 14.l:tel+ +- Alekhine-NN, Paris 1925. d) 9 ... ttJxc3 and then: dl) 10 bxc3 h6 (1O ... 'ii'xc3, Menzel-Kremer, corr. 1991, 11 .l:tel h6 12 .th4 .td6 13 e4 0-0 14 e5! gives White a dangerous initiative for the pawn) 11 .th4 .td6 (Miroslawska-Mai, Bundesliga 1998/9) 12 'ii'c2 0-0 13 e4 dxe4 14 .txe4 f5 15 'ii'b3+ ~h8 =. d2) 10 'ikel h6 11 .tf4 (Stone-Rohanchuk, Ontario 1990; 11 .th4 i..a3!) 11....ta3! 12 'ii'd2 (12 bxa3 'ii'xa3 13 'ii'd2 0-0 14 'i!Vc2 :e8 and White does not have full compensation for the pawn) 12... .txb2 13 'ii'xb2 ttJe4 14 'ii'c2 (14 .txe4 dxe4 15 ttJd2 'ii'd5 +) 14 ... ttJdf6 15 :acl 0-0 16 h3 :e8 +. d3) 10 'ii'd2 f6 11 .th4 g5 12 .tg3 .tb4 13 a3 ttJe4 14 'i!Vxb4 'ii'xb4 15 axb4 ttJxg3 16 hxg3 =. 10 ttJxg5 (D) 10.•.ttJf6 Other moves: a) 1O... 'ikd8 11 f4 (11 ttJf3 ttJf6 12 'iic2 .te7 =) l1...ttJf6 12 e4 (12 'ii'b3 h6 13 ttJf3 .te7 14 :ael 0-0 15 .tbl 'ikb6 with good play for Black, Esposito-Guimard, Mar del Plata 1951; 12 'ii'c2 .tb4 13 ~hl h6 14 ttJf3 0-0 15 ttJe5 c5 16 a3 .txc3 17 'ii'xc3 c4 = Lehmann-Robatsch, Marianske Lazne 1965) 12... h6 (12 ...dxe4? 13 .tc4! ttJd5

7 cxd5: INTRODUCTION AND MINOR LINES

47

with a level position, Casas-Letelier, Mar del Plata 1958. /I

14 'iib3 h6 15 tLlgxe4 and White wins, Esposito-Mangini, Mar del Plata 1957) 13 tLlB dxe4 14 tLlxe4 tLld5 15 tLle5 (Frydman-Vistaneckis, Stockholm OL 1937) 15 ... ii.b4 16 ii.c4 0-0 17 'ifb3 a5 18 ii.xd5 'ii'xd5 19 'ii'xd5 cxd5 20 tLlc3 .ltxc3 21 bxc3 ii.f5 =. b) 1O ... ii.e7 and here: bl) 11 f4 tLlf6 and then: bll) 12 'ii'el 'ikb6 (12 ... h6 13 tLlf3 0-0 14 a3 'ii'd8 15 tLle5 c5 = NajdorfHorowitz, Havana 1952) 13 l::tbl ii.d7 (13 ... 0-0!? 14 'ii'h4 h6 15 tLlf3 c5 with counterplay) 14 tLlf3 (Janowski-Bogoljubow, New York 1924) 14 ... 0-0 =. b12) 12 'ii'c2 h6 13 tLlf3 0-0 14 tLle5 (14 h3, Pelletier-Borgo, Cannes 1997, 14 .. ..l:te8!? 15 tLle5 ii.d6 with good chances for Black) 14 ... c5 15 a3! (Lautier-Anie, Bescanon 1999) 15 ... 'ii'c7 with counterplay. b2) 11 'ii'h5 g6 (1l...ii.xg5 12 'ii'xg5 0-0 13 l:!.abl, Najdorf-Guimard, Mar del Plata 1947, 13 ... 'ii'b4!? 14 a3 'ii'd6 ;1;) 12 'ii'h6 ii.f8 13 'ii'h4 h6 (13 ... 'ii'd8, Derieux-Godena, Paris 1998, 14 ~g3 tLlf6 15 e4 offers White minimally better chances) 14 tLlB 'ii'c7 15 l:!.acl 'ilVd6 16 ~f4 (16 e4 ii.e7 17 'iVg3 'iVxg3 18 fxg3 dxe4 19 tLlxe4 0-0 is equal) 16 ... 'ii'xf4 17 exf4 ii.d6 18 l::tfel+
lle4 Instead: a) 11 f4 h6 (1l...ii.b4 12 'ii'c2 h6 13 tLlf3 0-0 14 h3 c5 = AmbartsumianNemec, Cappelle la Grande 1991) 12 tLlB ii.g4 13 h3 ii.xf3 14 'iixf3 i.d6 15 a3 'iic7 = Ulko-Burmakin, St Petersburg 2000. b) 11 h3 h6 (1l...i.d6 12 f4 0-013 'iic2, Avshalumov-Anastasian, Sevastopo11986, 13 ... h6 with good play for Black) 12 tLlB i.d6 (12 ... i.b4 13 'iic2 0-0 14 a3 ii.d6 15 b4 "ikc7, Stojanovski-Popov, Struga 1993, 16 b5 leaves White minimally better) 13 tLle5 (Salov gives this as ;1; but Black has nothing to worry about) 13 ... 0-0 14 l1c1 (14 f4 c5 gives Black counterplay; 14 "ikc2 i.xe5 15 dxe5 tLld7 16 f4 "ikb6 is slightly better for Black) 14... i.xe5 15 dxe5 tLld7 16 f4 l::te8 =. c) 11 l:!.el h6 (1l...i.e7 12 "ikc2 ii.d7 13 lbc1 l1d8 14 a3 ii.c8 15 h3 ~c7 16 tLla4 ;1; Trifunovie-Bogoljubow, Birmingham 1951) 12 tLlf3 ii.b4 13 "ikc2 0-0 14 a3 i.d6 15 tLle5 i.e6 16 f4 and then: c1) 16 ... l1fc817h3(17b4!?) 17 ... c5 18 "ikf21i'd8 (18 ... c4 19 i.c2 l::te8 offers Black counterplay) 19 'it>hl l:!.ab8 20 'ii'f3 (Gofshtein-Godena, Genoa 1998) 20 ... c4 21 ii.c2 l1c7 22 f5 i.d7 23 e4! dxe4 24 i.xe4 ;1;. c2) 16...1i'd817b4(17tLla4l:!.e818 tLlc5 ii.xc5 19 'iVxc5 tLld7 20 1i'b4 tLlxe5 21 dxe5 "ike7 with good play for Black) 17 ... aS 18 bxaS (18 l1abl axb4 19 axb4 "ike7 20 b5 c5) 18 ... l1xaS 19 a4 l:!.e8 20 l:!.abl l1a7 and Black has good play. d) 11 ~c2 and here:

48

THE CAMBRIDGE SPRINGS

dl) l1...g6 12 f4 (12 ttJf3 i.g7 13 a3 0-0 14 b4 1i'd8 IS l:.fcl i.e616 ttJa4 ;\;) 12 ... i.h6 (12 ... i.g7!?) 13 ttJf3 (Ih-1f2 Plachetka-Espig, Novy Smokovec 1971) 13 ... 0-0 14 ttJeS l:.e8 IS l:.ael i.g7 16 fS ;\;. d2) l1...h6 12 ttJf3 i.d6 (12 ... i.e6 13 ttJeS i.d6 14 f4, Faanacht-Schuhen, Koblenz 1990, 14... 0-0 IS a3 ':fe8 =) and now: d21) 13 ttJeS i.xeS 14 dxeS ttJg4 =t Uhlmann-ZoItek, Bad Wildbad 1997. d22) 13 .:tac1 0-0 14 a3 .:te8 IS b4 'iVd8 with good play for Black, MeiserStockmann, Hessen 1997. d23) 13 ':ael 0-0 14 ttJeS i.e6 IS f4 ':ae8 16 h3 (Janowski-Jaffe, New York 1916) 16... .:te7 intending ... .:tfe8 with good play for Black. d24) 13 h3 'iVc7 (13 ... i.e6 14 ttJeS 0-0 IS a3 ':ae8 = Redondo-Leuza, Spanish Cht 1990) 14 a3 0-0 IS b4 'iVe7 = Cvitan-Raicevic, Valjevo 1984. 1l...h6 Black can also play 11...dxe4 12 ttJgxe4 i.e7 (l2 ... ttJxe4 13 i.xe4 i.e6 14 dS, Landau-Spielmann, Amsterdam 1936, 14.. J:td8 IS .:tel i.b4 16 'iVd4 ~f8 {16 ... 0-0 17 i.xh7+!} 17 ':edl i.g4 18 ':d3;\;) 13 ':el 0-0 14 'iVc2 (14 a3 ttJxe4 IS i.xe4 ..tf6 16 dS ..txc3 17 bxc3 cxdS 18 'iVxdS 'iVxc3 19 'iVd6 i.e6 20 ':ac 1 'iVaS 21 i.xb7 .:tab8 =; 14 'iVb3 ':b8 IS i.c4 ttJxe4 16 ttJxe4 i.fS 17 ttJg3 i.d6 =) 14 ... h6 IS 'iVb3 'iVb6 16 'iVxb6 axb6 17 ttJd2 i.d6 18 ttJc4 i.c7 =. 12 ttJf3 Not 12 ttJxf7? ~xf7 13 eS ttJh7 14 1i'hS+ ~e7 IS f4 (Guliev-Effatian, Teheran 1992) IS ... 'iVb4! =t. 12•.•dxe4 13 ttJxe4 ttJxe4 14 ..txe4 i.e6

14 ... i.d6 IS dS cS 16 i.c2 0-0 17 'iVd3 fS 18 ':fel 1i'c7 (Menchik-Pirc, Lodz 1938) 19 1i'c3 bS =. 15.:tel Other moves are worse:: a) IS 'iVc2 ..td6 (112-112 K.DolgitserB.Hulse, Parsippany 1998) 16 a3 0-0 17 ':fel l:.fe8 18 .:te3 .:te7 19 l:.ael ':ae8 +. b) IS ttJeS O-O-O!? has the point 16 i.xc6 'iVxeS 17 i.xb7+ ~xb7 18 dxeS ':xd119 ':axdl gS 20 l:.fel i.g7 with a slightly better ending for Black. 15•••i.b4 IS ... i.e7 16 i.c2 'iVc7 (Mikenas-Apsenieks, Kemeri 1937) 17 i.b3 ..txb3 18 'iVxb3 0-0 19 ':e4 i.d6 20 l:.ael ;\;. 16 ':e2 0-0-017 a3 ..td6 The position is equal. C5)

8 ttJd2 (D)

B

This is White's best reply. He addresses Black's idea of ... ttJe4 and challenges Black to justify the odd position of his queen. Now: C51: 8 ...i.e7 49 C52: 8.•.i.d6 49 C53: 8•.. ttJe4 SO C54: 8...i.b4 SI

7 cxd5: INTRODUCTION AND MINOR LINES C51) 8.....te7 Now White can expect a very pleasant game. 9 ..td3 0-0 No better is 9 ... ttJf8 10 ~c2 ttJe6 11 i.h4 g6 120-00-0 13 a3 ~d8 14 b4 ;t !\gdestein-Femandes, Thessaloniki OL IY84. 100-0 lteSll ~c2 11 a3 is also good: a) 11...~d8 12 ~c2 ttJf8 13 h3 ttJg6 14 ltfe 1 ttJhS (Maksimenko-Zheliandinov, Lvov 1995) IS iLxe7 ~xe7 16 h4 ;to b) l1...ttJf8 12 b4 ~d8 13 ~c2 h6 14 ..th4 ttJg4 IS iLxe7 ~xe7 16 ttJf3 ;t Trichkov-Meiser, Passau 1994. c) l1...a6 12 b4 ~d8 13 'ii'c2 ttJf8 14 h3 (14 ttJa4 ttJg6 IS ttJcs;t GrotnesH.M.Hansen, Gausdall992) 14 ...ttJg6 IS l:Ifbl ;t Rubene-Vidalinc, Chartres 1990. l1 ...ttJfS 12l:tabl ~dS 13 b4 iLd6 Or 13 ... b6 14 ttJe2 (KnollmiillerJ.Klein, Bavaria 199617) 14... ..td7;t. 14h3 U.Pfeiffer-Madje, Bundesliga worn \997/8. Black can now play 14 ... h6 IS i.xf6 ~xf6 16 bS ~gS 17 f4 ~e7 18 ltfel ;to C52) S.....td6 Again, this does little to challenge the smooth flow of White's game. 9 ..td3 0-0 Other continuations: a) 9 ... h6 10 iLh4 gS 11 iLg3 iLxg3 12 hxg3 ttJf8 13 ~3 ~6 14 'ii'a3 ;t Patty-Garey, San Antonio 1997. b) 9 ...~c7!? 10 ~f3 (10 f4 h6 11 i.xf6 {11 iLh4!?} 11... ttJxf6 12 ttJf3

49

..tg4 13 h3 ..txf3 14 ~xf3, Soln-Dezelak, Slovenian Cht 1994, 14... 0-0 :j:) 10... 0-0 11 ltcl a6 12 h4 (LippertKuhn, Unterfranken 1988; 12 h3!?) 12 ... lte8 with a good game for Black. 100-0 Less effective is 10 ~c2 lte8 (or 1O......c7, LJones-Bucholtz, Singapore U-18 Wch 1990, 11 lIel a6 12 ttJf3 lte8 13 ..th4 b6 14 ..tfS ;t): a) 11 0-0-0 bS (11...~4!? intending ... as) 12 ..t>bl iLa6!? (12 ... b4 13 ttJb3 'ii'c7 14 ttJa4 as {14 ... ttJb6?, Ehlvest-Anastasian, Minsk 1986, IS ttJacS! +-} IS ltel ..ta6 16 iLfS ..tbS 17 ttJbcS h6 18 iLh4 ;t) 13 iLfS b4 14 ttJa4 ..tc4 IS b3 iLbS 16 g4 h6 17 iLxf6 ttJxf6 18 h4 with a minimal advantage for White. b) 11 ..th4 h6 (11...iLe7 12 0-0 ttJf8 13 a3 ttJhS 14 iLxe7 lIxe7 IS b4 'iid8 16 a4 ttJf6 17 bS ;t Levenfish-Freiman, USSR Ch 1934) 12 0-0-0 bS 13 ~bl ~6 14 iLfS (14 lIdgl, de Souza Mendes-Ju.Bolbochan, Rio de Janeiro 19S2, 14... a6!? IS g4 cS 16 dxcS iLxcS 17 gS hxgS 18 l:txgS iLb7 19 lIhgl iLf8 =) 14... iLf81Sl:tcl a616g4g617 iLd3;t. c) 11 0-0 h6 (11...~c7 12 ttJf3 h6 13 iLh4 gS 14 iLg3 iLxg3 IS hxg3 ~d6 16 lIabl ;t Ravelo-Cuervo, Havana 1993) 12 iLh4 (12 iLxf6 ttJxf6 13 h3 iLe6 14 ltfcl lte7 IS ttJb3 'ilic7 16 ttJcS iLxcs 17 dxcS =) 12 ...'ilic7 13 ttJf3 ttJhS 14 e4 dxe4 IS ttJxe4 ttJb6 is equal. 10..JlVc7 Or 1O... lIe8: a) 11 iLh4 ~c7 12 ..tg3 (12 h3!?) 12 ... ttJf8 (12 ... ..txg3!? 13 hxg3 ttJf8 14 ltel -12... ttJj8 13 ltel i.xg3 14 hxg3) 13 ltel (13 ..txd6 ~xd6 14 'i1ib3 b6 IS .:tacl ttJe6 16 ltfdl ;t) 13 ... iLxg3 14

50

THE CAMBRIDGE SPRINGS

bxg3 'iWd6 (KNielsen-C.J.Nielsen, Copenhagen 1993) 15 'iWb3liJe6 =. b) 11 lIel i.e7 (Paulino-Galvao, Aveiro 2(00) 12 'iWc2 h6 13 i.h4 i.d6 14 l:tfel ;;1;.

I1ltJf3 lieS ll...h6 12 i.h4liJg4 (Oggier-Sosa, Neuquen 1986) 13 ~hl lIe814l:tcl;;1;. 12 l:tel 'iWbS 13 'iWc2 h6 14 i.h4 liJg4 14 ... liJh5!? 15 i.g3 i.xg3 16 bxg3liJdf6 17 b4 ii'd61S b5 According to Tsesarsky White has a small advantage, Selezniev-Bogoljubow, USSR Ch 1924. C53) S.•.liJe4 (D)

9liJdxe4 Or 9 liJcxe4 dxe4 10 i.f4 liJf6 11 a3 (Koerholz-KargoU, Wittlich 1985) 11...ii'f5 12 ii'c2 i.e6 13 i.e5 (13 i.a6 i.c8 140-0 ;;1;) 13 ... liJg4 14 i.g3 i.d5 15 i.c4 i.e7 16 i.xd5 cxd5 17 0-0 ;;1;. 9.•.dxe4 10 i.h4 Or 10 i.f4: a) 1O... liJf6 11 i.c4 i.b4 12 ~b3 0-013 a3 i.xc3+ 14 ~xc3 ~f5 150-0 i.e6 16 b4 i.xc4 17 ~xc4 ~d5 with

equality, Vukovic-Karaklajic, Sombor 1957. b) 1O... i.b4 11 ~c2 and then: bl) l1...liJf6 12 i.c4 0-0 13 0-0 i.f5 14 i.e5 (Toh-Handoko, Singapore 1997) 14... i.xc3!? 15 i.xf6 i.b4 16 i.e5 ;;1;. b2) l1...liJb6 was played in Liardet-Godena, Cannes 1997 and now 12 i.c7!? i.e6 (12 ... 'ti'f5 13 a3 i.xc3+ 14 bxc3 0-0 15 lIbl ii'a5 16 i.d6 l:te8 17 i.b4 ii'g5 18 c4 ;;1;) 13 a3 i.xc3+ 14 bxc30-0 15 i.e2 ~f5 16 ii'bl i.c4 17 i.xc4 liJxc4 18 ii'xb7 ii'd7 19 ii'b3 liJxe3 20 fxe3 'iixc7 is slightly better for White. b3) 11...0-0 12 l:tcl liJb6 (and not 12... 'iixa2? 13 i.d6 i.xc3+ 14 ii'xc3 l:te8? 15 i.c4 ~a4 16 b3 +-) 13 a3 i.xc3+ 14 ii'xc3 ii'f5 15 i.g3 :d8 16 ii'c2 i.e6 17 i.e2 ;;1;. 10•..i.b4 1O...h5 11 d5 l:th6 (Hergott-Mariotti, Dubai OL 1986) 12 a3! 'iWb6 (or 12 ... f5 13 i.e2 c5 140-0 ±) 13 'ii'c2 f5 14 lIdl liJf6 15 dxc6 bxc6 16 i.e2 is much better for White. 11 'ti'c2 0-0 No better is 11...liJb6: a) 12 a3liJd5 (12 ... i.f5 13 :el, Arlandi-Borgo, Mantova 1996, 13 ... i.xc3+ 14 ~xc3 'iixc3+ 15 bxc3 ;;I; intending f3) 13 lIel i.xc3+ 14 bxc3 0-0 15 ~b2 c5 (15 ... i.g4 16 i.c4, M.Pavlovic-Mihailidis, Murek U-14 Ech 1998, and now 16... i.e6!? with counterplay) 16 i.c4 (16 i.e2 cxd4 17 exd4liJf4 18 0-0 liJxe2+ 19 ii'xe2 lIe8 20 'iWb2 b5 =) 16... cxd4 17 i.xd5 'iixd5 18 cxd4 b6 19 0-0 i.e6 20 i.g3 l:tfc8 =. b) 12 i.e2 liJd5 13 0-0 i.xc3 14 bxc3 liJxc3 15 i.c4 0-0 16 :fel liJb5 17 a4 liJd6 18 i.e7 liJxc4 19 i.xf8

7 cxd5: INTRODUCTION AND MINOR LINES ..ie6 (Hracek-Handoko, Jakarta 1994) 20 i.e7!? ':e8 21 i.h4 t. 12 i.e2 Worse is 12 i.c4 tiJb6 13 i.b3 (Miguel-Belli, Peruvian Ch 1995) 13 ...tiJd5! 14 l::tc1 .l:le8 IS 0-0 tiJxc3 16 bxc3 i.a3 17 l::tcel 'ii'hS =. 12...fS 12 .. J:te8 13 0-0 (Moor-Mira, Scuol 2(01) 13 ... 'ii'fS 14 i.g3 (14 'ii'b3 as IS a3 i.e7 16 i.xe7 ':xe7 17 f3 exf3 18 ':xf3 'ii'g6 19 e4 t) 14... tiJf61S a3 i.f8 16 l::tfdl t. 130-0 13 i.c4+ h8 14 0-0 tiJf6 IS a3 i.d6 16 tiJe2 (16 f3!?) 16... i.d7 17 i.g3 (17 l::tac 1!?) 17 ... i.xg3 18 tiJxg3 l::tae8 (18 ... l::tac8 19 b4 'ii'c7, SalaunB.Pytel, Toulouse 1990, 20 f3 t) 19 %:tac1 'ii'c7 20 'ii'b3 b6 21 f4 'ii'd6 =. 13••• tiJf6 14 f3 Or: a) 14 i.g3 i.e6 (14 ... ':f7 IS a3 i.f8 16 b4 'ii'd8 17 bS cxbS 18 tiJxbS tiJdS 19 i.c4 i.e6 20 'ii'b3 t P.Martin-Letelier, Mar del Plata 1949) IS a3 i.e7 16 b4 'ii'd8 17 tiJa4 i.dS =Pelletier-Karl, Switzerland 1996. b) 14 a3 (Beretta-Piazzini, Buenos Aires 1947) 14... i.d6 IS i.g3 'iVd8 16 i.c4+ h8 17 ':adl i.xg3 18 fxg3 'ike7 19 dS cxdS 20 tiJxdS tiJxdS 21 .ltxdS i.e6 =. c) 14 'ii'b3+ ~h8 IS i.g3 (PerezNeri, Manila 1997) IS ... 'iVb6 16 i.c4 i.xc3 17 bxc3 'ii'xb3 18 axb3 gives White a slight advantage. 14...exf3 IS i.c4+ tiJdS!? 16 l::txf3 .lte6 17 l::tafl 17 tiJxdS!? cxdS 18 i.d3 l::tac8 19 ~f2 g6 20 i.g3 ':c6 21 a3 ':fc8 22':fl i.e7 23 i.eS ':c1 24 'ii'e2 ':xfl + 2S Ihfl t.

51

17•.•':ae8 18 tiJxdS cxdS 19 i.b3 i.d6 20 i.g3 i.xg3 21 ':xg3 ':c8 22 'ii'f2 'ii'c7 23 ':f3 White has a small advantage, Hauchard-Guigonis, French Ch 1998. C54)

8.••i.b4 (D)

9 'ii'c2 0-0 10 i.d3 Other continuations: a) 10 tiJb3 and then: al) 1O... 'ii'b6 11 i.d3 and here: all) l1...aS 120-0 a4 13 tiJd2 a3 14 b3 h6 IS i.h4 i.d6 (1S ... cS, BabuShankar, Calcutta 1996, 16 dxcS 'ii'xcs 17 ':ac 1 d4 18 exd4 'ii'xd4 19 tiJf3 t; IS ... ':e8 16 :ac1 i.d6 17 tiJf3, Rossetto-Nausa, Bariloche 1960, 17 ... 'ii'b4 18 ':cel tiJhS 19 e4 gS 20 i.g3 tiJxg3 21 hxg3 dxe4 22 tiJxe4 is also slightly better for White) 16':fdl :e817 ':ac1 'iVb4 18 tiJe2 tiJhS 19 :e 1 tiJdf6 with equality. a12) 11...':e8 12 i.f4 cS 13 dxcS tiJxcs 14 tiJxcs 'ii'xcs IS a3 (IS 0-0 i.xc3, Opocensky-Colle, Paris 1925, 16 ':ac1 d4 17 bxc3 dxc3 18 e4 h6 is slightly better for Black) IS .. :ii'aS 16 :dl i.xc3+ 17 'ii'xc3 'ifxc3+ 18 bxc3 i.d7 19 i.gS i.a4 20 .l:lb 1 tiJe4 is equal

52

THE CAMBRIDGE SPRINGS

since White cannot venture 21 .Jlxe4 dxe4 22 l:txb7 :tebS 23 :tb4 a5. a2) 1O... 'it'c7 11 .Jlf4 'ii'dS 12 .Jld3 :teS 13 0-0 (13 a3 .Jlxc3+ 14 bxc3 ltJfS 15 .Jlg5ltJg6 160-0 h6 17 .Jlxf6 'it'xf6 =) 13 ... ltJfS 14 :tadlltJg6 (14 ... ltJh5!? 15 .Jle5 f6 16 .Jle2 fxe5 17 .Jlxh5 g6 with good play for Black) 15 .Jlg5 (Rohacek-Bogo1jubow, Munich 1941) 15 ... h6 16 .Jlxf6 'it'xf6 17 :tel .Jld6 with excellent play. b) 10 .Jle2ltJe4 (lO ...:eS!? 11 0-0 .Jld6 12 .Jlh4, Vaitonis-Apsenieks, Buenos Aires OL 1939, 12... 'it'c7 13 ltJf3 ltJe4 14 ltJxe4 dxe4 15 ltJg5 ltJf6 16 .Jlc4 :tfS 17 ltJxe4 ltJxe4 18 'it'xe4 .Jlxh2+ 19 'lith1 ..td6 =) 11 ltJdxe4 dxe4 12 .Jlf4 ltJf6 (l2 .. .lleS 13 0-0 .Jlxc3 14 bxc3 ltJfS 15 c4ltJg6 16 .Jlg3 'it'g5, Gligoric-Janosevic, Skopje 1968, 17 h3 ;t) 13 0-0 :teS (13 ... .Jlxc3 14 bxc3 :e8 15 c4;t Zdebik-Feil, German girls Ch 1992) 14 .Jlg3 'it'g5 15 .Jlc4 'it'g6 16ltJe2 ltJh5 17 .Jle5 a5 ;to 10•••:te8 Worse are: a) 10...b6 (Goossens-Gillen, Belgium-Ireland 1992) 11 a4! ±. b) 1O... h6 11.Jlh4 .Jlxc3 12 bxc3 b5 13 0-0 :te8 14 :tfel 'it'a3 15 'iib3 'it'fS 16 e4 ± Kobler-Denzinger, Pizo1199S. c) 1O...ltJe4 11 .Jlxe4 dxe4 (SalmanShipman, New York 1991) 12 ltJdxe4 ltJb6 (l2 ...:teS 13 ..tf4 'it'h5 14 0-0 'ii'g6 15 :tfel ltJb6 16 ltJg3 ±) 13 0-0 'it'f5 14 f3ltJd5 15 ~3 ±. 11 0-0 11 ltJb3 'it'c7 12 0-0 ..td6 (SorinAracri, La Falda 19S4) 13 ~h1 =. 11..•h6 Alternatively: a) l1...g6 12 ltJb3 'it'd8 13 e4 dxe4 14ltJxe4.Jle7 15 .l:.aelltJxe4 16 .Jlxe7

l:txe7 17 :txe4 gives White a slight advantage, Hofman-Ujtelky, Prague 1953. b) 11...a6 12 :tfel h6 13 .Jlh4 'i'dS 14 :tablltJfS (Cummins-Barry, Ireland 1992) 15 'i'a4!? .Jle7 16 b4;t. c) 11.. ..Jlxc3 and then: el) 12 bxc3ltJe4 13 .Jlxe4 (13 .Jlf4, Rosemann-Friehoff, Germany 1990, 13 ... ltJdf6!?;t) 13 ...dxe4 14 .Jlf4 (Monteiro-Babo, Coimbra 1995) 14... ltJf6 15 :tabl 'it'd5 16 c4 'it'e6 17 a4 ;to c2) 12 'it'xc3 'it'xc3 13 bxc3ltJe4 14 ltJxe4 dxe4 15 .Jle2 h6 (15 ... ltJf8 16 .Jlf44Jg6 17 .Jlg3 .Jle6 IS :tfb1 :e7 19 c4 ;t) 16 .Jlh4 ltJb6 17 c4 (Van WelyI.Ivanov, Philadelphia 1994) 17 ... .Jle6 18 :fel f6 19 .Jlg3 ;to d) 11....Jld6 12 :tael h6 (Henk-Suptut, Belconnen 1994) 13 .Jlh4 'it'c7 14 ltJf3 b6 15 e4 ;to e) 1l....Jle7 12 .l:.fe1 4JfS 13 h3 .Jle6 14 a3 'ii'c7 15ltJe2 4Jh5 16 .Jlxe7 :xe7 17 ltJf3 ;t Seitz-Alekhine, Portsmouth 1923. 12 .Jlh4 'i'd8 12... .Jld6 gives White a choice between 13 :tae1 'i'c7 (Stoeber-Kurr, Germany 1996) 14 ltJf3!? intending e4 ;t, and 13 :tfel (Wendt-Heinritzi, Bad Wiessee 1997) 13 ... a6 14ltJe2 'it'dS 15 .Jlg3 .Jle7;t; e.g., 16ltJc3 c5 17 e4 cxd4 lSltJb5. 13 a3 .Jld6 We are following the game Ikonnikov-Weyerhauser, Schwabisch Gmiind 1994. White can now play 14 :tfel 'it'c7 15 'lithl ;to In conclusion, none of the lines in this chapter can be recommended for Black, although White needs to play accurately against both 7... ltJe4 and 7 ... exd5.

4 7 cxdS CiJxdS including 8 ~d2 CiJ7b6

"as

I d4 d5 2 c4 e6 3 ttJc3 ttJf6 4 .ig5 ttJbd7 5 c6 6 e3 7 cxdS ttJxd5

m

(D)

7 ... ttJxd5 is the only move justifying 6 .. :~a5. Although Black gives up the centre, he strengthens the pressure on c3 and threatens 8....ib4. After 8 'ifb3 Black can equalize in many ways. The best move, 8 'ii'd2, allows Black to play 8 ....ib4 (Chapter 5) or the more old-fashioned 8 ... ttJ7b6 (this chapter). In fact, 8... ttJ7b6 is our recommendation for Black. First we must note that after the limp 9 ttJxd5, Black is forced to sacrifice a pawn or to go into a level ending. However, the only critical line is 9 .id3 ttJxc3 10 bxc3 (D). Black has rich possibilities after 1O... ttJa4 (this line deserves serious attention and needs to be tested further in tournament practice) and the main line

B

1O...ttJdS guarantees him an extra pawn, since the complications after 11 lIc 1 ttJxc3 are not dangerous for Black. In our opinion the positions after taking the pawn are quite playable for Black.

1 d4 d5 2 c4 e6 3 ttJc3 ttJf6 4 .ig5 ttJbd7 5 ttJf3 c6 6 e3 'ii'aS 7 cxd5 ttJxd5 Now: A: 8 'ii'b3 54 B: 8 'Ii'd2 56 The latter is the main line. Or: a) 8 lIcl ttJxc3 9 bxc3 "xa2 10 .id3 (Balke-Schikora, Germany 199617) 1O ....id6 11 .ih4 'ii'a5 12 .ig3 .ixg3 13 hxg3 h6 with a good game for Black. b) 8 'ii'c2.ib4 9 lIc1 (9 'ifi>d2 h6 10 .ih4 e5 11 ttJxe5 ttJxe5 12 dxe5 .ie6

54

THE CAMBRIDGE SPRINGS

13 e4 tZJxc3 14 bxc3 'ilfxe5 +) 9 ... 'ilfxa2 (9 ... h6 10 .i.h4, Marini-Eliskases, Mar del Plata 1951, 1O...'ilfxa2 11 tZJd2.i.xc3 12 bxc3 'ilfxc2 13 ':'xc2 tZJe7 +) 10 .i.d3 tZJxc3 11 bxc3 'ilfxc2 12 ':'xc2 .i.d6 13 e4 f6 14 .i.e3 (Aniek-Leer Salvesen, Gausdal1995) 14... a5 15 c4 e5 +. A)

8 'fIi'b3 The queen turns out not to be terribly well placed here, and the c3-knight remains pinned. Now Black's main immediate decision is whether to insert ... h6: AI: 8...h6 54 55 A2: 8....i.b4 Other moves: a) 8 ... tZJ7b6 9 e4 tZJxc3 10 bxc3 .i.d6 (1O ... 'ilfa3 11 ~e2 f6 12 .i.d2 'ilfxb3 13 axb3 ± Beseva-Damceski, Skopje 1998; 1O... f6 11 .i.d2 'ilfa4, Foguelman-Juarez, Buenos Aires 1968, 12 .i.d3 .i.e7 13 e5 'ilfxb3 14 axb3 ±) 11 e5.i.f8 12 .i.d2!? (12 .i.d3, Skembris-Gulicovski, Vrnjacka Banja 1989, 12 ... c5!? 13 0-0 .i.d7 14 .i.e4 is slightly better for White) 12 ... ~e7 13 .i.d3 0-0 14 a4 ±. b) 8 ... .i.d6 9 .i.e2 (9 e4 tZJxc3 10 bxc3 e5 11 .i.d2 0-0 12 .i.d3 'ilfc7 = Peev-Atanasov, Varna 1974) 9 ... c5 10 0-0 tZJxc3 11 'ilfxc3 'ilfxc3 12 bxc3 0-0 13 tZJd2 ;t Zankl-Mtiller, Germany 1993. c) 8... e5 9 .i.c4 (9 .i.d3, Korte-Gerndorf, Dortmund 1987, 9 ... f6 10 .i.h4 exd4 11 exd4 .i.b4 12 0-0 .i.xc3 13 bxc3 'ilfxc3 14 ':'fel + Wf7 15 'ilfdl with compensation) 9...tZJ7b6 10 .i.xdS tZJxdS 11 dxe5 (11 tZJxe5 f6 12 tZJc4 ~a6,

Opl-Lombard, Mitropa Cup 1978, 13 .i.f4!? =) 11....i.b4 12 ':'c1 h6 13 .i.h4 g5 14 .i.g3 .i.e6 15 a3 .i.xc3+ 16 bxc3 0-0-0 with a very complicated position in which White's chances are minimally better. d) 8 ... c5 9 .i.d3 (Avshalumov-Rozentalis, Leningrad 1979; 9 .i.c4 cxd4 10 exd4 tZJ7b6 11 .i.b5+ .i.d7 12 .i.xd7+ Wxd7 13 .i.e3 ':'c8 =) 9 ... h6! 10 .i.h4 cxd4 11 exd4 tZJf4 =.

AI) 8...h6 9 .i.h4 .i.b4 Instead: a) 9 ... .i.d6 10 .i.e2 tZJxc3 11 bxc3 e5 12 0-0 0-0 13 tZJd2 tZJb6 (SimaginShatskes, Moscow 1961) 14 .i.g3 .i.e6 15 'ilfc2 ;t. b) 9 ... tZJ7b6!? 10 tZJd2 (GardeliniJuarez Flores, Guatemala City 2000) 10... ~d7 11 i.g3 c5 12 tZJxd5 exd5 13 dxc5 ~xc5 14 a3 ':'c8 =. 10':'c1 c5 Or: a) 1O... tZJ7b6 (Gotthilf-Spielmann, Moscow 1925) 11 e4 tZJf6 12 tZJd2 0-0 13 a3 i.e7 14 e5 tZJfd5 15 'ilfc2 ±. b) 10... 0-0 11 .i.d3 b6 (11...e5 12 0-0 exd4 13 tZJxd5 cxd5 14 exd4 ± Foguelman-Piazzini, Buenos Aires 1959; 1l...':'e8 12 0-0 ~xc3 13 bxc3 tZJ5b6 14 .i.g3 ± Foguelman-De Oliveira, Leipzig OL 1960) 12 0-0 tZJxc3 13 bxc3 .i.d6 14 .i.bl ':'e8 (Van der Werf-Lacrosse, Saint Vincent 1998) 15 c4;t. 11 a3 .i.xc3+ 12 bxc3 cxd4 13 exd4 f5!? This is a new and interesting move that tries to take advantage of the bishop being on h4. It leads to very complicated positions with chances for both sides. This plan needs to be analysed

7 cxd5 tilxd5 INCLUDING 8 "ikd2 tiJ7b6

55

lind tried in practice. Black can also

play: a) 13 ... 0-0 and now: al) 14lZ'ld2 b5!? (14 ... lZ'lf4 15 i.g3 l".) 16 i.xf4 exf4 17 i.d3 l::te8+ 18lZ'le4 l/lf6 19 f3 lZ'lxe4 20 fxe4 i.f5 21 0-0 .ixe4 22 i.b5 i.c6 23 i.xc6 bxc6 24 llxf4 'ti'd5 25 'ikxd5 cxd5 1/2- 1/2 EuweCapablanca, Hastings 1930/1) 15 i.g3 .ia6 16 i.d3 l::tfc8 17 i.e4 lZ'l7b6 18 .id6 i.b7 =t. a2) 14 i.g3 ':e8 15 i.e2 a6 160-0 h5 17 lZ'ld2 lZ'l7f6 18 l::tfd 1 ;j; FlohrLustig, Prague 1928. b) 13 ... a6!? is also interesting: 14 .ig3 (14lZ'ld2 b5 15 i.d3 0-0 16 i.g3 l'iJ7f6 17 lZ'le4lZ'lxe4 18 i.xe4 'ii'd8 =) 14 ... b5 15 i.d3 i.b7 16 lZ'ld2 0-0 17 'ikb2 lZ'l5b6 18 0-0 i.d5 19 c4 bxc4 20 lbxc4lZ'lxc4 21 i.xc4l::tfc8 =. 14 h3 f415 g4 15 i.d3 g5 16lZ'lxg5 (16 i.xg5 hxg5 17 lZ'lxg5 ':h6 18 lZ'le4 a6 19 lZ'ld6+ <J;;e7 20 lZ'lc4 'ikc7 +; 16 i.g6+ 'its>f8 17 i.xg5 hxg5 18 lZ'lxg5 l:th6 19 i.d3 lbxc3 20 lZ'lxe6+ <J;;e7 =t) 16... hxg5 17 i.xg5lZ'lf8 18 h4 b6 19 We2 i.b7 20 f3 e5°o. 15•••g5 16lZ'lxg5 hxg5 17 i.xg5 ':g8 18 h4lZ'l7b6 The position is unclear.

B

8...i.b4 9 llc1 (D) Now Black generally chooses between two pawn-breaks, both of which appear fully satisfactory: A21: 9 •••e5 55 A22: 9 •••c5 56

Bad Worishofen 1993, and now 12 bxc3lZ'lg4 13 i.f4 i.xf4 14 exf4 0-015 l::tfel is slightly better for White. b) 9 ... lZ'lxc3 10 bxc3 i.a3 11 l::tdl 0-012 i.d3 e5 13 0-0 i.d6 14 i.h4 (14 i.bl ':e8 15 i.h4, Foguelman-Pleci, Buenos Aires 1970, 15 ...'ii'a3 16 i.g3 e4 17 'ii'xa3 i.xa3 18lZ'ld2;j;) 14.. :ii'c7 15 i.g3 exd4 16 exd4 i.xg3 17 fxg3;j; Levenstein-Schwartz, New York 1933. c) 9 ... 0-0 10 i.d3 (10 a3 i.d6 11 i.d3, Ebelshaeuser-Hupprich, Pirmasens 1992, ll...e5!? 12 0-0 lZ'lxc3 13 l::txc3 h6 14 i.h4 exd4 15lZ'lxd4lZ'lc5 =) 1O... e5 (10 ... lZ'l7b6 11 0-0, OchkoosJanes, Canada 1992, 1l...lZ'lxc3 12 bxc3 i.a3 ;j;) 11 0-0 lZ'lxc3 12 bxc3 i.a3 13 l::tbl ;j; Landau-Lundin, Stockholm OL 1937. d) 9 ... lZ'l7b6 10 e4 (10 i.c4 0-0 11 0-0 lZ'lxc4 12 'ii'xc4lZ'lb6 13 'iib3 e5 14 dxe5 i.e6 15 'ii'c2 i.xc3 16 'ii'xc3 'ii'xc3 17 l::txc3 i.xa2leads to equality) 1O... lZ'lxc3 11 bxc3 (Kahia-Papapostolou, Leipzig OL 1960) 1l...i.d6 12 e5 i.a3 13 ':bl i.d7 14 i.d3 c5 15 i.d2 ;j;.

Less popular are: a) 9 ...lZ'l7f6 10 i.d3 i.d6 11 0-0 lZ'lxc3 was played in Rolle-Hoffmeyer,

A21} 9•.•e510 i.c4 No better are:

A2}

56

THE CAMBRIDGE SPRINGS

a) 10 .i.d3 (Freiman-Makogonov, USSR 1927) 1O... h6 11 i.h4 exd4 12 exd4 ttJf4 + (old ECO). b) 10 e4 (Marshall-Rubinstein, Berlin 1928) 1O... exd4 11 exdS dxc3 12 bxc3 i.a3 13 .l:!.dl ttJcS 14 'ii'c2 0-0 IS dxc6 bxc6 16 ttJd4 .l:!.e8+ 17 i.e3 i.g4

+. c) 10 a3 i.xc3+ 11 bxc3 exd4 12 exd4 0-0 13 i.d3 l:te8+ 14 'itd 1 ttJf8 is equal, I.Rabinovich-Tartakower, Moscow 1925. d) 10 ttJxeS ttJxeS 11 dxeS i.e6 12 a3 i.xc3+ (12 ... ttJxc3, KrenziskyEm. Lasker, Copenhagen sim 1927, 13 'ii'xb4 'ii'xb4 14 axb4 ttJa2 IS l:tdl ttJxb4 16 .i.e2 h6 17 i.h4 =) 13 bxc3 (Janowski-Tarrasch, Semmering 1926) 13 ... 'ii'c7 14 c4 'ii'aS+ IS 'iitdl ttJf6 16 i.d3 0-0-0 17 'iite2 'ii'xeS =. 10•.•exd4 10 ... ttJ7b6 11 i.xdS ttJxdS 12 ttJxeS i.e6 13 ttJc4 (13 a3, Landau-Bogoljubow, Zandvoort 1936, 13 ... ttJxc3! 14 axb4!? i.xb3 IS bxaS ttJa2 16 l:tcS f6 17 i.h4 fxeS 18 l:txeS+ 'itf7 is slightly better for Black) 13 ... ttJxc3 14 ttJxaS ttJxa2+ IS 'ii'xb4 ttJxb4 = Euwe-Alekhine, Amsterdam 1931. 11 i.xd5 11 exd4 ttJ7b6 12 .i.xdS ttJxdS = Landau-Spielmann, Zandvoort 1936. 11 •••cxd5 1l...i.xc3+ 12 bxc3 cxdS 13 exd4 0-0 140-0 ttJb6 = old ECO. 12 exd4 0-0130-0 ttJb614 a3 i.xc3 15 l:txc3 ttJc4 IS ... .i.d7 16 .l:!.cS 'ii'a617 ttJeS i.fS 18 'ii'g3 ;1; Flohr-Winter, Hastings 1935/6. 16 i.f4 l:.e817 ~c2 i.g4 17 ... g6 18 ttJeS i.fS 19 ~c1 gives White a slight advantage, R.Christensen-P.Korning, corr. 1949.

18 ttJe5 i.e6 The position is equal.

A22) 9...c5 10 .i.e2 h6 Or 10... bS 11 0-0 c4 12 'ii'c2 ttJxc3 13 bxc3 i.a3 14 l:tbl ttJb6 IS e4 i.b7 16 i.d2 f6 17 dS exdS 18 exdS 0-019 ttJd4 (Levenfish-Freiman. USSR 1925) 19 ... a6 =. 11 .i.h4 cxd4 12 exd4 12 ttJxd4 ttJcS 13 'ii'c2 (13 'ii'c4 .i.d7 14 ttJdbS 0-0 IS 0-0 a6 +) 13 ... 'ii'xa2 14 ttJdbS ~a4 IS 0-0 'ii'xc2 16 l:txc2 i.xc3 17 ttJxc3 ttJb4 and White must still prove that the pawn sacrifice was correct. 12.••ttJf4 13 i.n 0-0 14 a3 .i.d6 15 'ii'b5 'ii'c7 The chances are equal. B) 8~d2

White breaks the pin and now has some ideas of playing e4. 8 ••.ttJ7b6 With this move, Black prepares to bring his second knight into the assault on c3. Instead, 8... i.b4 is the subject of the next chapter. Other moves: a) Not 8...eS? (Weisshaupt-Raddatz, Germany 1992) 9 ttJxdS 'ii'xdS 10 dxeS 'ii'xd2+ 11 'iitxd2 h6 12 i.h4 gS 13 i.g3 i.g7 14 h3 ±. b) 8 ... b69 .i.c4 i.b4 10 l:.c1 i.b7 11 0-0 ttJxc3 12 bxc3 i.a3 13 l:tbl ;1; Kummer-Puschmann, Kiekrz 1995. c) 8 ... i.d6 9 e4 ttJxc3 10 bxc3 eS (10...0-0, Vark-Blanco, Zagan girls Wch 1997,11 eS!? i.c7 12 i.d3;1;) and then: c 1) 11 .i.d3 exd4 12 ttJxd4 ttJcS (12 ... ttJeS 13 .i.e2 0-0 14 0-0 is level,

7 cxd5 fud5

INCLUDING

Biermann-Klemme, Germany 199112) 13 .ic2 ttJe6 14 ttJxe6 .ixe6 15 '1i'xd6 'iVxg5 with a good game for Black. c2) 11 J:tbl 0-0 12 .i.d3 ttJb6 (12 ... J:te8 13 0-0 h6 14 .ih4:! StocekKIebel, 2nd Bundesliga 1995/6; 12... a6 13 0-0 b5 14 'ii'c2 :! Hummel-Pustina, Germany 1994/5) 13 dxe5 .i.xe5 14 ttJxe5 'ii'xe5 15 f4 '1i'a5 16 f5 l:e8 17 O-O:!. d) 8 ... ttJ7f6 9 ttJxd5 (9 .i.d3 ttJxc3 10 bxc3 ttJd5 - 8... ttJ7b6 9 .i.d3 ttJxc3 10 bxc3 ttJd5) 9 ... '1i'xd2+ 10 ttJxd2 exd5 11 .ixf6 gxf6 12 .id3 .ie6 :! Ovod-Najditsch, Moscow 1996. e) 8 ... ttJxc3 9 bxc3 and here: el) 9 ... b6 10 i.d3 i.a6 11 0-0 h6 (11 ... i.xd3 12 '1i'xd3 .i.d6 13 e4 0-0 14 a4, Avshalumov-Schonau, Strasbourg 1991, 14... l:fb8 15 e5 .i.f8 16 ttJd2:!) 12 i.h4 (12 i.f4 .i.xd3 13 'ii'xd3 .i.e7 14 a4 0-0 15 e4 l:tfd8 16 J:tfdl :! Danielian-Donchenko, Protvino 1992) 12 ... .ixd3 13 '1i'xd3 .i.a3 14 c4 0-0 15 :tabl :! intending c5 (ECO), NikolicSpeelman, Novi Sad OL 1990. e2) 9 ... i.d6 10 .id3 e5 (10 ... 0-0 11 0-0.:te8 12 'ii'c2 h6, Irwanto-Handoko, Bali 2000, 13 .i.h4 c5 14 .i.g3:!) 11 0-0 0-0 12 ..th4 lIe8 13 'ii'c2 h6 14 i.g3 '1i'c7 15 l:fel :! Loginov-Burmakin, Russian Ch 2000. e3) 9 ... ttJb6 10 lIbl f6 (10 ... ttJa4 {or 1O ... ttJd5} 11 l:b3 ttJxc3? 12 '1i'xc3 '1i'xc3+ 13 ':'xc3 ..tb4 14 cot>d2) 11 .ih4 and then: e31) 11.....td7 12 .id3 c5 13 0-0 cxd4 14 ttJxd4 (14 cxd4 '1i'xd2 15 ttJxd2 :! P.Nikolic) 14 ...e5 15 ttJb3 (15 ttJb5? 0-0-0, P.Nikolic-Nogueiras, Havana (1) 1987, 16 '1i'b2 .i.e6 17 '1i'c2 cot>b8 gives Black an excellent position) 15 ... '1i'a4 16 ..tg3 is evaluated by

8 'ilid2 'D7b6

57

P.Nikolic as :! but in fact Black has nothing to be worried about; for example, 16... .:.c8 17 f4 (17 l:tfdl i.e7 18 ttJal '1i'a5 19 .i.e4 '1i'xc3 20 i.xb7 '1i'xd2 21 ':'xd2 l:tc7 +) 17 ... e4 18 ..te2 '1i'c6 19 '1i'd4 ..tf5 =. e32) 11...e5!? is a new and interesting continuation, by which Black immediately develops his light-squared bishop. 12 dxe5 ..tf5 13 .:tdl fxe5 14 .id8!? (14 ..tg3 .i.g4 15 ..td3 i.xf3 16 gxf3 g6 17 h4 .ig7 18 ..te4 i.f6 19 '1i'b2 ttJd5 =) 14... e415 ..txb6 '1i'xb6 16 '1i'c2 (16 ttJd4 0-0-0 17 'ii'c2 'ii'c5 18 .i.e2.i.e7 19 'ii'b3 'iitb8 20 .i.c4 ..td7 =) 16 ... 'ii'a5 17 ttJd4 0-0-0 18 .i.e2 g6 19 '1i'b3 .i.g7 :!. We now return to 8 ... ttJ7b6 (D):

Now White must choose carefully, as the position is sharp and full of unexpected pitfalls: Bl: 933 57 B2: 9.:tct 58 B3: 9 ttJxd5 59 B4: 9 i.d3 60 81)

933 Not the most effective, since the pawn can become exposed here, and

58

THE CAMBRIDGE SPRINGS

the move doesn't even prevent Black from playing ....tb4. 9 .•.tLlxc3 9 ....tb4 is also good: 10 l:.cl .txc3 11 bxc3 and now: a) l1...h6 12 .th4 'ili'xa3 13 e4liJf6 14 .td3 cS IS 0-0 c4 16 .tc2;t Yermolinsky-Zakhvatov, Groningen 1996. b) 11...'iIi'xa3 12 c4 (12 e4liJe7 13 .td3 f6 14 .te3 liJg6 IS 0-0 ;t Levenfish - Ilyin-Zhenevsky, Leningrad 1934) 12... liJe7 13 cS ± Euwe. c) l1...f6 12 .th4 'ili'xa3 13 e4liJe7 14 .tg3 eS IS dxeS fS! 16 exfS liJxfS 17 .tf4 0-0 18 .te2 .te6 190-0 "fIe7 =. 10 'iixc3 10 .td3 (10 bxc3 liJdS =+= old EeO) 1O... liJba4 11 0-0 is no better: a) l1...h6 12 .tf4!? (12 .th4 .td6 13 e4, Vladimirov-Shabanov, Tashkent 1987, 13 ... i.c7 14 bxc3 'ili'xc3 IS 'ili'xc3 liJxc3 +) 12 ... liJxb2 (12 ... .te7 13 b3 liJb6 14 i.c7 0-0 IS b4 'ili'hS 16.txb6 ;t) 13 'iixb2liJa4 14 'ili'e2 ttJb6 ISliJeS ;to

b) l1...b6 12 bxc3 'ili'xc3 13 'ili'xc3 liJxc3 14 l:.fclliJdS IS l:.xc6;t SzaboAsztalos, Ljubljana 1938. c) 11....td6!? 12 e4 f6 13 i.e3 eS 14 dxeS fxeS IS b3 .tg4 =. 10...'iixc3+ 11 bxc3 f612 .th4 .td7 Or 12... liJa4 (12 ... cS 13 i.e2 .td7 = Chekhov-Panchenko, Irkutsk 1983) 13 c4 cS 14 .td3 .td7 IS liJd2 (JezekTomasevi6, COIT. 1991-4) IS ... 0-0-0 16 f3 .tc6 17 .tf2 .td6 =. 13.td3 13 a4 cS 14 .tbS cxd4 IS exd4 l:c8 gives Black good play, M.GurevichA.N.Panchenko, Pardubice 2000. 13...l:tc814 .tg3 c5 15 i.e4 cxd416 cxd4 i.c6 The ending is level.

82) 9l:tc1 This is a fully respectable move, but should come to the same thing as 9 i.d3 (Line B4). Attempts by White to give this move independent significance can led him into trouble. 9...liJxc310 bxc3 ttJd5 (D)

w

lli.c4 This is an attempt to place the bishop more actively than on d3, but there are some drawbacks to this idea. Other moves: a) II 'Oitdl eS (11....ta3 12 l:c2 f6 {12 ... liJb6!? with the point 13 e4 eS} 13 e4 fxgS 14 exdS, Levenfish-Euwe, Leningrad 1934, 14...g4!? ISliJgS "fIxdS 16 c4 'ili'd8 17 cS eS 18 .tc4 'iWxd4 =) 12 e4liJb6 13 dxeS (13 'Oitel f6 14 i.e3 i.e6 IS l:tbl l:.d8 16 'ili'c2 exd4 17 liJxd4 i.f7 +) 13 ... i.g4 14 'Oitel .txf3 IS gxf3 'ili'xeS 16 l:.dl i.e7 17 i.e3 l:d8+. b) 11 i.d3 - 9 i.d3 tilxc3 10 bxc3 ttJd5 11 l:c1. This transposition represents White's best option. 11 ....ta3 Or: a) ll...bS!? 12 i.b3liJxc3 13 l:xc3? (White should play 13 0-0 -11 ... tilxc3

59

7 cxd5 lbxd5 INCLUDING 8 "iid2 t'iJ7b6 12 0-0 b5 13 .i.b3) 13 ....i.b4 14 0-0 i.xc3 IS 'fic2 =+ Orsag-Jirovsky, Pardubice 1997. b) 11. .. liJxc3 120-0 bS (12 ....i.b4? 13 a3 'fixa3 14 l:tal liJe4 IS 'fie2 'fic3 {lS ... liJxgS 16liJxgS 'fic3 17liJe4 1-0 Stahlberg-Rellstab, Sopot 1935} 16 l:tfc1 liJxgS 17 liJxgS! 'fid2 IS 'fin! +-) and then: bl) 13 dS?! (Samarian strongly recommended this continuation, which he attributed to Rozenberg; however, we find it wholly unconvincing) 13 ... bxc4 (l3 ... exdSI4.i.xdS cxdSlS ':xc3 .i.b4 16 'iixdS 0-0 17 'fixaS i.g4! 00 NCO; 13 ... f6!? 14 'fixc3 {14 dxc6 bxc4 IS 'iixc3 'fixc3 16 ':xc3 fxgS 17liJxgS h6 lSliJf3 i.a6 -+} 14... 'fixc3 IS ':xc3 bxc4 16 dxc6 fxgS 17liJxgS h6 ISliJf3 .i.a6 19liJeS -+) 14 d6 f6 IS i.h4 with sufficient compensation according to NCO but in our opinion Black should be winning. b2) 13i.b3b414e4h6(14...liJxe4? IS 'iif4 +- Bareev) IS i.f4 (1S i.h4? i.d6 16 ':fel i.b7! =+ Bareev-Flear, Rome 1990) IS ... i.a6 16 ':fel ':dS (l6 ...i.e7 17 'fib2 0-0 IS a3 cS 19 dxcS i.xcs 20 axb4 i.xb4 21 ':al 'ii'bS 22 liJd4 with compensation) 17 liJeS 'fibS IS 'fie3 i.d6 19 i.c4 'fib7 20 i.xa6 'iixa6 21 a3 with compensation. b3) 13 'fixc3 'fixc3 14 ':xc3 bxc4 IS ':bl i.a6 16 liJd2 cS gives White the better chances; e.g., 17 liJxc4 cxd4 IS exd4 l:tcs (1S ....i.xc4 19 ':xc4 i.d6 20 ':b7) 19 ':bc 1 ':bS 20 i.f4. 12 ':blliJxc3 Instead: a) 12 ... f6 13 i.f4 (Csom-Hora, Budapest 1965) 13 ... bS 14 i.xdS cxdS IS 0-0 i.d7 leads to a slight advantage for Black.

b) 12... bS 13 i.xdS cxdS 14 ':b3 (14 0-0 0-0 IS l:tb3, Filippov-Philipowski, Bled 2001, IS ... 'ii'a4!? 16 i.f4 i.b7 +) 14 ... 0-0 IS c4 b4 16 .i.e7 (Agdestein-Lauvsnes, Norwegian Ch 19S6) 16...dxc417 l:txa3 'fixa3 IS .i.xb4 c3 19 i.xa3 cxd2+ 20 ~xd2 +. 13 l:tb3 b5 140-0 14 .i.d3 b4 IS 0-0 i.a6 16 ':el .i.xd3 17 'fixd3 0-0 IS i.e7 l:tfeS =+ Marinosson-S.Larsen, e-mail 1999. 14••• b4 14...bxc4 IS 'fixc3 'fixc3 16 ':xc3 i.d6 (16 ... i.b2 is also interesting) 17 J:tbl i.a6 ISliJd2 ~d7 19liJxc4 ':hbS 20 ':bb3 .i.xc4 21 .:txc4 ':bS 15 i.f4 .i.a6 16 i.xa6 'fixa6 17 ':el ':d8 Black has the better chances .

+.

83) 9liJxd5 This is a very unambitious idea. White avoids the many lines where he has to sacrifice a pawn, but at the cost of removing all tension from the position. Black should have no problems in the resulting queenless middlegame. 9...'fixd2+ 10 liJxd2 Or 10 ~xd2 cxdS (10 ... exdS 11 i.d3 i.d6 12 ':hbl f6 13 i.f4 i.xf4 14 exf4, Eriksson-Melander, corr. 1975, 14...i.d7 IS ':el + ~f7 16 h3 .:taeS 17 ':e3 ':xe3 IS fxe3 liJcs 19 g4 liJd6 =) 11 i.d3 liJc4+ (1l....i.d6 12 ':ac1 f6 13 i.f4 i.xf4 14 exf4 ~d7 IS a4 as 16 ':c3 ;!; B6nsch-Panczyk, Rabenberg 19S4) 12 ~c3 i.d7 13 b3liJd6 14 i.f4liJbS+ IS i.xbS i.xbS =. 10...exd5 1O... cxdS 11 i.f4 (11 .i.d3 i.d6 12 0-0 0-0 13 .:tac1 i.d7, Betaneli-Wenaas, North Bay 1999, 14 e4!? gives

60

THE CAMBRIDGE SPRINGS

White a slight advantage) 1l....i.d7 12 .i.d3 .:tc8 13 We2 ;I; Alatortsev-Romanovsky, USSR 1945. 11.i.d3 11 a3 .i.f5 (Lindemann-Lausen, Stuttgart 2001) 12 .i.f4ltJa4 13 b4ltJb2 intending ... ltJd3+ =. 11 .••a5!? Or: a) 1L...i.b4 12 a3 (Chachalev-Bauer, Sala 1993) 12... .i.e7 13 .i.xe7 Wxe7 14 b4 ..tf6 15 .i.e2 ..tf5 16 h4 h5 17 .:tel ;1;. b) 11...f6 12 ..tf4 'iitf7 13.:tel (112-112 Mimbela Lopez-Magallon, Aragon 1992) 13 ... .i.e7 14 a3 ..te6 15 .:tc2 :the8 16 ltJb3 h5 17 h4 ;1;. c) 1l....i.e6 12 0-0 f6 13 .i.f4 .i.b4 14 .:tfd1 g5 15 .i.g3 h5 =Weber-Heimbrodt, COIT. 1987. d) 11.. ..i.e7 12 .i.f4 0-0 13 0-0 .i.g4 14 .:tfel (Pekarek-lankovec, Trnava 1985) 14 ... g5 15 .i.c7 .:tac8 16 .i.xb6 axb6 17 h3 .i.e6 =. e) 11.. ..i.d6 and then: e 1) 12 f3 f6 13 .i.h4 0-0 14 0-0 .i.e6 15 .:tael .:tfe8 is equal, MantzouneasSchwarz, Wiesbaden 1988. e2) 120-00-013 .:tfc1 (13 .:tab1 a5 14 .:tfc1 .:te8 15 ltJb3ltJa4 =StephanZobel, Germany 1993; 13 b3 .i.d7 14 a3 .:tae8 =Haumann-Repp, COIT. 1989) 13 ... ..td7 14 .:tab1 .:tae8 = MenchikEliskases, Hastings 1936. e3) 12 .:tc1 .i.e6 13 .i.h4 (13 0-0 f6 14.i.h4 0-0-0 15 a3 'iii>b8 16ltJb3ltJd7 = Fronczek-Schrepp, Germany 1993) 13 ... a5 14 i,g3 .i.e7 15 a3 a4 16 .:tc3 ltJc8 17 0-0 ltJd6 18 :tfel Wd7 19 h3 g6 (Bonsch-Cvetkovic, Wattens 1990) 20 f3!? = Cvetkovic. 12a4 Lalic prefers 12 n, rather than giving up the b4-square.

12....i.b413 '.1i>e2 .i.g4+! 14 f3 ..th5 15 h4 0-0 And now instead of 16 g4 .i.g6 17 b3 .i.xd3+ 18 'iitxd3 .:tfe8 19 .:tael c5! with good play for Black, KarpovKasparov, Moscow Wch (47) 1984/5, White should play 16 .:thc1 (intending ltJb3) 16 ... .:tae8 17ltJb3 f5 =.

B4) 9 .i.d3 (D)

B

This is the critical line. Black will often be able to win a pawn, but must be careful that White doesn't in return get too strong an initiative. 9 ...ltJxc3 Other moves: a) 9 ... .i.d7 10 0-0 ltJxc3 11 bxc3 c5 12 :tab1 (Danielian-Woods, Hallsberg jr 1993) 12... f6 13 ..tf4 :tc8 14 ':fdl cxd4 15 cxd4 'ifxd2 16ltJxd2 ..tc6 17 e4;1;. b) 9 ... ltJa4 and here: bI) 10 .:tc1? fails to 1O... ltJxb2! 11 'ii'xb2 .i.a3. b2) 10 0-0 ltJdxc3 (1O ...ltJaxc3 11 a3 f6 12 e4ltJb6 13 .i.e3 c5 14 ':fel c4 15 .i.f1 .i.d7 16 'ii'xc3 'ifxc3 17 ':xc3 ltJa4 18 ':xc4ltJxb2 19 ':c7 ± Olafsson-Lombardy, Vestmannaeyjum 1985;

7 cxd5 fud5

INCLUDING

IO ... ttJxb2!? 11 'ii'xb2 'ili'xc3 12 'ili'e2 h6 13 .lth4 .ltd6 14 ttJd2 .ltb8 15 ttJc4 'ili'b4 16 :abl 'ii'a4 17 :b3 b5 18 :a3 'ili'b4 19 :b3 'ii'a4 =) 11 a3 f6 12.lth4 ttJxb2 13 'ii'xb2 ttJd5 with good play for Black. b3) 10 ttJxd5 'ili'xd2+ 11 ~xd2 (after 11 ttJxd2, Niephaus-Scheipl, Hoechst 1955, ll...cxd5 12 b3 ttJc3 13 ttJbl ttJxbl 14 ':xbl i.d61eads to equality) II...exd5 liz-liz Adorjan-Ivkov, Skara Echt 1980. Possibly White is a little better in the final position. c) 9 ....ltb4 10 :c1 (10 a3 ttJxc3 11 0-0 ttJe4 12 axb4 {12 'ili'xb4 'ili'xb4 13 axb4 ttJxg5 14 ttJxg5 f6 15 ttJf3 i.d7 =} 12 .. :~xa1 13 .ltxe4 'ii'a4 14 ttJe5 with compensation according to Vladimirov but the position looks better for Black) and then: c1) 10 ... h6 11 .lth4 0-0 12 0-0 (Packroff-Schulze, COIT. 1991) 12 ... c5 13 ~c2 c4 14 .lte2 ttJxc3 15 bxc3 .ltd6 16 e4 i.d7 17 i.g3!. c2) 1O ....ltd7 11 e4 ttJxc3 12 bxc3 i.a3 13 :bl f6 14 .lth4 (DinstuhlMolinaroli, MUnster 1993) 15 .. Jlc8 15 c4 ~xd2+ 16 ttJxd2 c5 17 d5 !. c3) 1O ... ttJa4 11 0-0 h6 (ll...ttJaxc3 12 bxc3 i.xc3 {12 ... ttJxc3 - 9.Jiltc3 10 bxc3 ttJd5 11 1J..c1 ttJxc3 12 0-0 i.b4} 13 'ili'c2 .ltb4 =) 12 i.h4 ttJaxc3 13 bxc3 i.xc3 14 'ili'e2 i.b4 15 ttJe5 0-0 (Laux-Volk, Germany jr 1988) 16 ttJc4 'ili'c7 17 'ii'f3 with compensation. c4) 10 ... c5 11 a3 (11 dxc5 ttJd7 12 e4 ttJxc3 13 a3 ttJxe4 14 'ii'xb4 'ili'xb4+ 15 axb4 ttJxg5 16 ttJxg5 !) 1l...i.xc3 12 bxc3 c4 13 i.bl i.d7 (13 ... 'ii'xa3 14 e4 ttJe7 {14 ...ttJc7!? 150-0 ttJb5} 15 0-0 ttJg6 = Hoeksema-Hendriks, Dutch open Ch 1992) 14 e4 (Veresov - IlyinZhenevsky, USSR Ch 1934) 14 ...ttJc7!

8 'ikd2 tD7b6

61

15 .ltf4 ttJb5 16 0-0 0-0 with counterplay. c5) 10... f6 11 i.h4 c5!? (11...ttJxc3 12 bxc3 i.a3 13 :b1 c5 14 'ili'c2 gives White useful pressure on Black's weakened light squares: 14... i.d7 15 0-0 i.a416 'ili'e2 'ili'xc3!? {16 ... 0-0 17 c4 is much better for White, Vaganian-Smyslov, Montpellier Ct 1985} 17 .ltb5+ i.xb5 18 'ili'xb5+ ~f7 19 1J..b3 'ili'c4 20 dxc5 'ili'xc5 21 'ili'd3 :ad8 22 ttJd4;1;) 12 dxc5 (12 e4 cxd4 13 ttJxd4 ttJxc3 14 bxc3.lta3 15 :bl .ltd7 =) 12 ... ttJd7 13 c6 ttJc5 14 0-0 bxc6 15 i.c4 .ltd7 16 'ili'c2 .ltxc3 17 bxc3 =. We now return to 9... ttJxc3 (D):

10 bxc3 Or 100-0: a) 1O ... f6 11 .lth4 ttJba4 and now: a1) 12 bxc3 should be compared with the main line. a2) 12 1J..fc1 ttJxb2 13 'ii'xb2 ttJd5 14 a3 i.d6 (14 ... ttJb6 15 e4 .ltd7, Stocek-Jirovsky, Czech Cht 1994/5, 16 e5 f5 17 ttJd2 'ili'd5 =) 15 'ili'c2 g5 16 i.g3 i.xg3 17 hxg3 g4 with good play for Black. a3) 12 i.g3 i.e7 13 :abl (intending ':fc1) 13 ... i.d8 14 bxc3 ttJxc3 15 1J..b3 ttJd5 16 'ili'b2 with compensation.

62

THE CAMBRIDGE SPRINGS

b) 1O... liJba4 11 a3 (VladimirovShabanov, Tashkent 1987) 1l...i.d6!? 12 e4 f6 13 .i.e3 eS 14 dxeS fxeS IS b3 .i.g4 16 bxa4 .i.xf3 17 gxf3 i.c7 =. lO•••liJd5 1O... liJa4 also deserves attention: 11 0-0 (11 ':c1 liJxc3 12 0-0 {not 12 ':xc3?? .i.b4} 12....i.b4 - 9... i.h4 10 ':c1 liJa4 11 0-0 lDxc3 12 hxc3 lDxc3) 11...'ii'xc3 12 'ii'e2 'ii'b2 (Black uses his queen to disrupt White's build-up; 12....i.d6 13liJd2 'ii'aS, Benjamin-Klostermann, Berlin 1984, 14liJe4 is slightly better for White; 12...'ii'aS 13 ltJes i.d6 14 f4 'ii'c7 IS 'ifhs g6 16 'ifh4;t AubelVan Uytven, Belgian Cht 1996n) and now: a) 13 'ii'dlliJc3 14 'ii'el f6 IS i.h4 and here: at) IS ...liJdS 16 e4 liJf4 17 'ii'e3 liJxd3 18 'ii'xd3 'ii'a3 19 'ii'e2 i.e7 20 ':abl 0-0 21 eS (with compensation Cvetkovic) 2l...b6 22 ':b3 'ii'aS 23:c1 .i.d7 24 exf6 .i.xf6 2S i.xf6 (JoviCicCvetkovic, Sremska Mitrovica 1990) 2S ... gxf6!? 26 'ii'b2 .i.e8 a2) IS ... .i.b4!? 16 a3 (16 e4 gS 17 i.g3 g4 18liJh4liJbS 19 'ii'bl .i.c3 -+; 16 .i.g3 eS 17 dxeS i.fS 18 e4liJxe4 19 ':bl .i.xel 20 ':xb2 liJxg3 is much better for Black) 16....i.xa3! 17liJd2 bS (17 ... .i.b4 18liJc4 'ifb3 19 'ii'cl eS 20 dxeS .i.fS =F) 18 f3 i.b4!? (18 ... aS 19 liJe4liJxe4 20 i.xe4 .i.d7 21 :bl 'ii'a2 22 ':f2 'ii'c4 23 ':c2 'ii'a4 24 ':a2, Babula-Jirovsky, Czech Republic 2001, 24 ... ':c8 2S 'ii'f2 b4 26 .i.c2 'ii'bs 27 ':xa3 bxa3 28 ':xbS cxbS 29 i.d3 ':cl+ 30 i.fl b4 -+) 19 ':cl 0-020 ':f2 'ii'a3 (intending ... liJa2) 21 'ii'fl liJe2+ 22 ':xe2 'ii'xd3 -+. b) 13liJeS'ii'xe2 14 .i.xe2 .i.d6 (alternatively, 14 ... f6 IS .i.hS+ ~e7 16

+.

i.h4 liJc3 17 liJc4 ~d7 18 ':fc 1 liJe4 19 i.e2 liJd6 =F) IS ':ac1 f6 16 i.hS+ ~e7 17liJf7 (Wolfenter-Koester, corr. 1993-S) 17 ... fxgS 18liJxh8 g6 19 i.dl liJb6 20 a4 =F. c) 13 .i.c2 and now: cl) 13 ... liJc3 14 'ii'd3 liJdS IS .i.b3 h6 16 .i.h4 'ii'c3 17 'ii'e2 .i.a3 (17 ... 'ii'aS 18 liJeS with compensation, EspositoSchroeder, Mar del Plata 19S1) 18liJeS as (Williams-Vaughan, corr. 1980) 19 :abl a4 20 liJc4 =. c2) 13 ... h6 14 i.h4 liJc3 IS 'ii'd3 liJdS (Borovikov-Shabanov, USSR Cht 1990) 16 ':fbl gives White compensation; e.g., 16... 'ii'c3 17 'ii'dl .i.d6 18 liJd2 .i.c7 19 ':b3 'ii'aS 20 liJc4 =. c3) 13 ... 'ii'bS 14 'ii'dl (14 .i.d3 'ii'b2 IS i.c2 'ifbs 16 i.d3 112-112 Scherbakov -Vyzhmanavin, Cheliabinsk 1991) 14... liJc3 IS 'ii'd2 and then: c31) IS ... .i.b4 16 i.d3 'ii'a4 (and not 16... 'ii'aS? 17 a3! i.xa3 18liJeS!? f6 19liJc4 'ii'xgS 20 'ii'xc3 i.e7 21liJb6 ':b8 22 ':xa7 0-0 23 .i.c4 ± Magerramov) 17 a3 i.aS 18 'ii'b2 f6 19 i.h4 liJdS 20 ':fcl i.c7 21 ':c4 'ii'aS 22 'ii'c2 i.d6 23 e4 (23 .i.xh7!?; 23 ':xc6!? ~e7 24 ':c4 bS 2S ':cS .i.xcs 26 'ii'xcS+ ~f7 27 e4 liJf4 28 i.xbS with compensation) 23 ... liJb6 24 ':c3 'ii'hS 2S a4 .i.b4 26 ':b3 as 27 .i.g3 0-0 (27 ... 'ii'f7 28 ':xb4!? axb4 29 i.d6 with an initiative for the pawn - Magerramov) 28 .i.c7 liJd7 29 .i.c4 and White has sufficient compensation for the pawn, Magerramov-Scherbakov, Cheliabinsk 1991. c32) IS ...liJe2+ 16 ~hl i.b4 17 a4 .i.xd2 18 axbS and here: c321) 18 ....i.c319.:abl h620i.h4 (20 bxc6 bxc6 21 i.e4 i.d7, GauglitzSr.Cvetkovic, Balatonbereny 1987, 22

7 cxd5 fud5 INCLUDING 8 'fid2 tiJ7b6 i.h4! with compensation - Sr.Cvetkovic) 20 ... cxb5 21 i.d3 g5 22 i.xb5+ 'i;e7 (22 ... Wf8 23 i.xe2 gxh4 24 ttJe5 a5 25 :fc 1 i.b4 26 l:.c7 ;t) 23 i.xe2 gxh4 24 ttJe5 .:td8 25 .:tfc1 i.a5 26 i.f3 i.b6 27 h3 f6 28 ttJc4 ;to c322) 18 ... i.b4!? 19 l:.tb1 c5 20 dxc5 i.xc5 21 i.d3 h6 22 i.xh6 l:txh6 23 i.xe2 i.d6 24 lIa5 a6 =. We return to 1O... ttJd5 (D):

w

Now White must choose exactly how he wishes to give up his c-pawn: B41: l1.:tel 63 B42: 11 0-0 64 11 e4 'ii'xc3 12 'iixc3 ttJxc3 13 'i;d2 gives White some compensation. 841) l1l:tel This doesn't save the pawn, but does prevent Black from taking it with his queen. 11...ttJxc3 11 ... f6 has never appeared in practice but undoubtedly deserves attention: 12 i.h4 ttJxc3 13 0-0 i.b4 14 ~b2 (14 a3 'iixa3 15 i.c4 {after 15 ::tal ~3 16 l:tfcl ttJa2 17 'iixa2 'ii'xd3 compensation for the sacrificed pawn

63

cannot be seen} 15 ... ttJd5 16 'iic2 a5 17 .:tfdl i.e7 +) 14 ... ttJd5 15'iWc2 i.a3 16 .:tb1 ttJb4 17'iWc3 'iWa4 +. 12 0-0 i.b4 13 'iib2 Black has a very good game after 13 a3'iWxa3 14 lIal1i'b3: a) 15 i.h4 0-0 (15 ... f6!? +) 16 ttJe5 f6 17 i.c4 (Videki-Michenka, Bytom 1988) 17... ttJd5!? 18'iWe2'iWc3 +. b) 15'iWc1 f6 16 i.h4 (VasilchenkoMatlak, Katowice 1990) 16 ... e5!? 17 e4 (17 ttJd2'iWd5 18'iWc2 exd4 19 :fe1 ~d8 -+) 17 ... c5 18 ttJd2 'iWe6 19 dxc5 'iic6 20 'iic2 'iWxc5 -+. c) 15 i.c2 'ii'd5 (15 ... ttJe4 is also good: 16'iWdl'iWd5 +old ECO; 16 'ii'e2 'iid5 17 i.f4 0-0 18 'iWd3 f5 19 .:ttbl i.e7 + Savickas-lanahi, Duisburg U14 Wch 1992) and now: c1) 16 l:.tbl c5 17 e4 ttJxe4 18'iWf4 (Iannaccone-Vallifuoco, Naples 1985) 18 ... ttJc3 -+. c2) 16 'ii'd3 'iWb5 17 e4 'ii'xd3 18 i.xd3 ttJb5 19 l:ttb1 (Szabo-Unzicker, Buenos Aires 1960) 19... i.c3 20.:ta4 i.d7 21 Wfl a6 -+. c3) 16 e4 ttJxe4 17 'ii'xb4 ttJxg5 + / -+ Alekhine-Euwe, Amsterdam Wch (25) 1935. d) 15.:tfc1 and here: d1) 15 ... f6 (Jacob-Kollowa, COIT. 1987) 16 i.f4 ttJd5 17 'ii'e2 ttJxf4 18 exf4 'ii'd5 +. d2) 15 ... ttJe4 16 'iie2 'iid5 and then: d21) 17 i.f4 (Brauer-Rosenhahn, COIT.1981) 17 ... ttJf618.:tc4i.e7+i+. d22) 17 i.h4 (Wolary-Ros, COIT. 1986-7) 17 ... f5 18 ttJe5 0-0 19 i.c4 'ii'd6 20 f3 ttJf6 21 ttJd3 a5 denies White compensation for the pawn. d3) 15 ... ttJa2 16 'iixa2 'iixd3 17 d5 0-0 (not 17 ... exd5? 18 'iib2! with a strong attack; 17 ... c5!? 18 ttJe5 'iif5 19

64

THE CAMBRIDGE SPRINGS

'iVa4+ 'it>f8 20 -ltf4 gS 21 -ltg3 exdS +) 18 l:.d1 (Filip claimed that the idea of d6 gave White compensation, but practice has shown that it is insufficient) 18 ...'iibS!? (18 .. .'i¥fS 19 d6 {19 'iic4 cS + Christl-Gburek, COIT. 1991} 19 ...f6 20 d7 -ltxd7 21 ':xd7 fxgS 22 ttJd4 'iVf6 23 ttJxe6 l:.t7 24 l:.ad1 'it>h8 Schultheiss-Zibell, COIT. 1983) 19 d6 -ltd7 20 -lte7 ':tb8 -+ Ciesla-Banaszkiewicz, COIT. 1992. e) IS ttJeS and then: el) lS ... 0-0!? 16-ltc4liJe4(16... ttJdS 17 'iie2 ttJc3 18 'iid2 repeats) 17 'iVe2 'ii'c3 18 ':ac1 'ii'd2 19 'ifg4 fS (Averbakh) 20 'ii'h4 ttJxgS 21 l:.fd1 'iib2 +. e2) lS ... ttJe4 16 "iWe2 ttJxgS and now: e21) 17 'ifhS -lte7 18 l:.ab1 (Walther-Bergelt, COIT. 1978) 18 ... 'iVdS 19 f4 g6 20 'ifh6 ttJe4 21 'ifg7 ':f8 -+. e22) 17 f4 (Weselin-Butze, COIT. 1971) 17 ... ttJh3+ 18 gxh3 'iVdS 19 'iVc2 fS 20 ttJc4 ':b8 21 l:.xa7 cS +. e23) 17 l:.ab1 'ii'c3 18 ttJc4 bS 19 l:.fc 1 bxc4 20 lhc3 -ltxc3 21 -ltc2 -lta6 22 f4 fS 23 fxgS 0-0 with more than sufficient compensation for the queen. 13••. ttJd5 Or 13 ... h6 14 -lth4 ttJdS IS ':c4 -lta3 (IS ...bS 16 l:.c2 -ltb7 17 ttJeS with compensation, Petursson-Flear, San Bernardino 1990) 16 'iYe2 (16 'ifc2!? ttJb6 17 ':c3 ttJdS 18 ':c4 ttJb6 19 ':c3 0-0 20 .tg3 .te7 21 ':b3 cS =) 16 ... ttJb6 17 ':c2 'iYhS 18 h3 f6 19 e4 with compensation, Kohlweyer-Michalczak, 2nd Bundesliga 1995/6. 14 ':c4 Worse is 14 'ifb3 h6 IS .th4 (Wilder-Thomas, Toronto 1987) IS ... -lta3 16 l:.c4 ttJb6 17 l:.c2 'iVb4 18 'ifxb4 -ltxb4 19 .tg3 -lte7 20 e4 f6

+

+.

14••..ta3 Or: a) 14...-lte7 IS .txe7 ttJxe7 16 dS 0-0 (Loginov-Panchenko, Tashkent 1986) 17 d6! gives White a dangerous initiative for the pawn; e.g., 17 ... ttJfS 18 'iVc2 ttJxd6? 19 .txh7+ 'it>h8 20 ':cS 'iVa3 21 l:!.hS +-. b) 14 ... .td61Se4ttJb616.:c2'iVa3 17 'iVxa3 .txa3 18 l:tbl (DannevigOmtvedt, Norway 1992) 18 .. .f6 19 .tf4 -lte7 20 -ltc7 ttJa4 21 ':c4 'it>d7 15 'iVbl h6 Or IS ... -lte7 16 i.xe7 ttJxe7 (MrazIotov, COIT. 1988) 17 l:tcS 'iVd8 18 'iVc2 with compensation. 16 -lth4 0-0 17 i.g3 ':d8 18 "iWb3 ~e7 19 ':bl "iWa3 Black has a good game.

+.

B42) 11 0-0 Now Black can take on c3 with his queen, but White's idea is that he will then be able to gain time by attacking the black queen. 11 ...'iixc3 Other moves: a) l1...f6 12 e4 ttJxc3 13 ~e3 'iVa3 14 'iVc2 -ltb4 IS l:.fc1 0-0 16 .td2 (16 ttJd2!? bS 17 'ii'b3 'ifxb3 18 ttJxb3 ttJa4 19 ':xc6 ±) 16 ... ttJa4 (l6 ... ttJbS 17 ~xb4 'iixb4 18 ':abl 'ifaS 19 eS with an initiative) 17 ~xb4 (17 l:.abl.txd2 18 'ifxd2 "V/Jie7 {18 ... ttJb6 19 l:.cS +Quinteros-Meister, Lugano 1986} 19 'iic2 ;t) 17 ...'iYxb4 18 a3 'ifaS 19 'iVb3

±.

b) l1...h6 12 i.h4 'iYxc3 (l2 ... ~d6 13 c4 "V/Jixd2 14 ttJxd2 ttJb4 {14 ... ttJe7 IS cS ~b8 16 ~g3 0-0, BattistiniSimonini, COIT. 1991, 17 ttJc4 ±} IS -lte2 ~c7 16 a3 ttJa6 17 ~g3 ±) 13

7 cxd5 tlJxd5 INCLUDING 8 "iid2 CiJ7b6 ~d1 i.d6 14 'iVe2 0-0 lSltJd2 'iWb4 16 ltJc4 i.c7 17 :ab1 ~a4 t. 12 'iVe2 (D)

B

12.•.i.d6 Alternatively: a) 12... i.e??! 13 i.xe7 ltJxe7 14 ltJeS (according to ECO White has a large advantage; although the assessment may be exaggerated, this variation cannot be recommended) 14... ltJg6 (14 ... ltJfS!? IS a4 'iVaS 16 l:.fb1 0-0 17 ~c2 'it>h8 18 ltJc4 'iVc7 19 as :b8 20 i.e4 with an initiative) and now: a1) IS i.xg6 hxg6 16 ~f3 0-0 and then: all) 17h4'iVaS18hSgxhS19%:tacl (Polugaevsky-Seirawan, Biel IZ 1985) and now Polugaevsky recommends 19 ... h4! 20 'iVhS intending f4 and l:.f3. In this case, if Black accepts the pawn sacrifice, White has merely sufficient compensation; e.g., 20 ... 'iVxa2 21 l:.cS (21 f4 'iVd2!; 21 :c4 'ii'a3 22 dS f623 ltJg6 exdS 24 l:.a4! 'iVd6 2S ltJxf8 'ii>xf8 +) 21...aS 22ltJg4 eS! 23 ltJf6+! gxf6 24 dxeS fS 2S ~gS+ 'itth7 26 ~hS+ with a perpetual check. a12) 17 'iVg3!? ("intending f4 ±"Polugaevsky) 17 ... 'iVa3 18 :fd1 (18 ~h4 'ii'd6 19 f4 'iVd8 20 ~g3 is slightly

65

better for White) 18 ... 'iVe7 19 e4 l:.d8 20 l:.ac1 t. a2) IS f4 fS 16 l:.ac1 'iVa3 17 ~S (17 e4? ltJxf4 + Povah-Strand, corr. 1984; 17 ltJxg6 hxg6 18 l:.cS i.d7 19 :bl b620':'b3 'iVa421 ':'cl t) 17 ... 0-0 18 ltJxg6 hxg6 19 'ii'e2 and White has an initiative for the pawn. b) 12 ... h6 13 i.h4 i.d6 (13 ... i.e7 14 i.xe7 ltJxe7 IS ltJeS 'iVaS 16 %:tac1 0-0 17 i.b1 f6 18ltJc4 'iVd8, LehmannStablberg, Marianske Lazne 1965, 19 ':'fd1 'ii'd7 20 'iVd3 with compensation) 14 ltJd2 and then: bI) 14...~aS lSltJc4 'iVc7 16ltJxd6+ 'iVxd6 17 :ac1 (17 'ii'g4 0-0 18 .tg3 'iVe7 19 ~e4 fS 20 'iVf3, Szabo-Balazs, Gyor 1992, 20 ...b6!? 21 i.eS i.b7 22 'iVg3 l:.ad8 with compensation) 17 ... 0-0 18 i.b1 g6 19 i.g3 'iVe7 20 e4 (Lepichov-Chalupa, corr. 1990) 20 ... ltJb6 21 'iVe3 'ittg7 22 l:.fdl t. b2) 14... i.b8!? IS l:.fc1 (IS ltJc4 'iVb4 16 a3 'ii'a4 17 ltJb2 'iVaS 18 ltJc4 'iVa4repeats) ls .. :iVaS 16ltJc4 'iVa417 i.c2 'iVa6 18 a4 0-0 19 'iVhS ltJb4 20 i.e7 (20 i.e4 ':'e8 21 ltJeS i.xeS 22 dxeS 'iVaS 23 ':'c4 ltJdS 24 'iVg4 with compensation) 20 ... ltJxc2 21 l:.xc2 l:.e8 22 i.d6 i.xd6 23 ltJxd6 l:.e7 24 as is slightly better for White. 13ltJd2 Other moves: a) 13 :ac1 'iVaS and then: a1) 14 ltJeS i.xeS (14 ... ltJb4!? +) IS dxeS h6 112-112 Sanguineti-Rossetto, Buenos Aires 1977. a2) 14 e4 ltJf4 IS i.xf4 i.xf4 16 :cS 'iVd8 (Wood-Tomovic, Budapest 1948) 17 'iVc2 with compensation. a3) 14 i.bl ltJc3 IS 'iVd2 i.b4 16 ~2 (16 :xc3 i.xc3 17 'iVd3 i.b4 0-1 Kindtner-Marzik, corr. 1986-7) 16 ... f6

66

THE CAMBRIDGE SPRINGS

17 i.h4 gS 18 i.g3 'iia3 is much better for Black. a4) 14 i.h4 'iic7 IS i.g3 0-0 16 lLleS f6 17 lLlc4 (17 'ilfhS fS 18 .l:.fd 1 i.d7 19 'ilif3 .l:.ad8 20 i.c4 i.e8 21 i.h4 with compensation) 17 ... i.xg3 18 fxg3 'iVd7 (18 ...'iie7!? =1=) 19 i.bl b6 20 lLleS (Zoltek-Panczyk, Lublin 1979) 20 ...'iie8!? 21 'ilfd3 g6 is slightly better for Black. b) 13 .l:.abl h6 14 i.h4 0-0 ISlLld2 (1S .l:.b3 'iVaS 16 i.bl fS 17 'iVc2 'iVc7 is slightly better for Black, Sutkus-Kristoffel, COIT. 1986-91) IS ... 'iiaS 16lLlc4 'iic7 17 lLlxd6 'ilixd6 18 i.g3 'iie7 19 .l:.fc 1 with compensation. 13...'iia5 (D)

14lLlc4 Or: a) 14 f4 'iic7 IS lLlc4 (IS i.h40-0 16.1:.ac1 i.d7 17 i.bl ':ac8 18lLlc4 fS '+ Van den Berg-Stclhlberg, Amsterdam 19S0) and here: al) IS ... fS 16 e4 (16 ':f3 0-0 17 .l:.h3, Samo-Cvetkovic, Belgrade 1986, 17 ... h6 18 'iihS lLlf6 19 i.xf6 .l:.xf6 20 'ilie8+ i.f8 '+; 16 'iVhS+ g617 'iih4 i.f8 18 i.h6 with compensation) 16 ... lLlc3 17 'iVhS+ g6 18 ~f3 (Borisenko-Panchenko, Tbilisi tt 1974) 18 ... fxe4 19

i.xe4 lLlxe4 20 'iixe4 with compensation. a2) IS ... h6 16 i.h4 0-017 ':ac1 b6 18 lLleS cS '+ Siebert-Blauhut, e-mail 1995. b) 14 e4 i.f4 (14 ... lLlf4 IS i.xf4 i.xf4 16lLlc4 'tlVd8 17 eS i.gS 18lLld6+ 'it>f8 19 .l:.abl i.e7 20 lLlxb7 gives White a slight advantage, Grabliauskas-Weiland, Hamburg 1997) IS lLlc4 'iVc7 (ls ... lLlc3 16 lLlxaS lLlxe2+ 17 i.xe2 i.xgS 18 l:.abl i.d8 19 lLlxb7 i..b6 20 lLlcS eS =) 16 'iihS h6 (16 ... g6 17 'iih6 i..xgS 18 'iixgS 'iVf4 19 'ilig3 'iVxg3 20 fxg3 lLlb4 21 lLld6+ <J;;e7 22 lLlxf7 .l:.f8 23lLleSlLlxd3 {23 ... i.d7 24 .l:.fdl! lLlxd3 2S ':xd3 b6 26 .l:.c1 ± Uhlmann-Yusupov, telechess OL 1981 } 24 .l:.xf8 <J;;xf8 2S lLlxd3 ;!; Salov-Panchenko, Leningrad 1984) 17 exdS i..xgS 18 d6 'ilid8 19 d7+ i.xd7 20 lLld6+ 'it>e7 21lLlxf7 i.e8 22lLlxd8 i..xhS 23 lLlxb7 =. 14•••'iic7 (D)

15lLlxd6+ Other moves: a) IS e4 i..xh2+ 16 ~hl i..f4 17 i..h4 lLlb6 (17 ... bS !?) 18 'i!Vg4 gS (or 18 ... f6!? 19 g3lLlxc4 20 i..xc4 i..d2 21 i..xe6 gS 22 i.xc8 'iVxc8 23 'iVhS+ 'it>e7

7 cxd5 tbxd5 INCLUDING 8 'fid2 l:iJ7b6 =+=) 19 i.xgS (Novikov-Smagin, Tashkent 1984) 19 ... eS!? 20 'iVh.s i.xgS 21 'ikxgS 4:Jxc4 22 i.xc4 exd4 and White does not have compensation. b) IS 'ikhS i.e7 (D) (1S ... h6 16 f4 4:Je7 17 4:JeS l:If8 18 i.h4, RadomskyMerritt, COIT. 1989, 18 ... 4:JdS!? 19 .:tf3 with compensation) and then:

b1) 16 f4 and here: b1l) 16 ... 4:Jf6 and now: bll1) 17 'iVh.4 (Van Kerkwijk-Alderden, COIT. 1987) is given as ± by ECO but after 17 ... cS Black does not have any problems; e.g., 18 dxcS (18 4:JeS cxd4 19 exd4 'ikd6 20 fS exfS 21 i.bS+ 'litf8 22 i.c4 4:Je4 +) 18 .. :ii'xcs 19 'ikg3 h6 20.Jth4 0-0 21 l:Iacl 4:JdS +. b112) 17 .Jtxf6 i.xf6 18 :lac1 'ike7 19.:tb1 = Vaganian-ToITe, Bie1 IZ 1985. b12) 16 ... g6 17 'i'h6 (17 'i'f3, Dolgitser-Merritt, COIT. 1985, 17 ... f6 18 i.h6 cS 19 .:tfel bS +) 17 ... .Jtf8 18 ~h3 (18 'i'h4!? +) 18 ... i.g7 19 i.h6 0-020 .Jtxg7 r:Jitxg7 and White does not have full compensation, Hohm-Hellstrom, COIT. 1988. b2) 16 e4 4:Jf4 17 i.xf4 'ili'xf4 18 4:JeS 0-019 g3 'i'd2 20 :lad 1 'i'xa2 21 f4 (21 4:Jg4!? f6! 22 4:Je3 g6 23 'iWg4 bS

67

24 'iWf3 'ilia3 2S dS cxdS 26 exdS l:Ib8 -+) 2l...'i'b2 (2l...'i'b3!?) 22 i.c4 i.f6 23 4:Jf3 bS (23 ...'ilic3!?) 24 eS g6 2S 'iVh.3 .Jtg7 26 .Jtd3 as 27 g4 h6 (27 ... a4!?) 28 fS exfS 29 gxfS gxfS 30 :ld2 'i'b3 (White has only slight compensation for the sacrificed pawns) 31 :lg2 f4?? (3l...r:Jith8) 32 'ikxh6 1-0 Novikov-Panczyk, Poznan 1985. 15..•'iWxd6 (D) =+= /

16 i.h4 16 f4 h6 17 i.h4 0-0 (17 ... .Jtd7 18 'iWf3 0-0 19 e4 4:Jb4 gives Black good play, Bunjaner-Kristoffel, COIT. 1980) 18 .:tael b6 19 'ilif3 fS 20 .Jtc4 as 21 'ilie2 i.b7 16..•0-0 17 i.g3 'ikd7 18 .:tac1 b6 19 i.bl i.b7 20 'iWd3 g6 20 ... fS!? 21 :lfe 1 l:Iad8 22 'i'b3 ~h8 23 i.eS 4:Je7 with good play for Black. 21 .:tfdl l:Iad8 22 'ilie2 22 e4!? 22••.f5 23 i.e5 White has compensation for the pawn, Gligoric-Shengelia, Panormo Z 1998.

+.

Overall, we can conclude that the 8... 4:J7b61ine is satisfactory for Black.

5 7 cxd5 ctJxd5 8 ~d2 ..tb4 1 d4 d5 2 c4 e6 3 lbc3 lbf6 4 .ig5 lbbd7 5 lbf3 c6 6 e3 'ii'a5 7 cxd5 lbxd5 8 'it'd2 .ib4 Although most games are played in this way nowadays, we do not see clear equality for Black in the critical lines. 9l:tc1 (D)

B

Now: 9...f6 69 9...c5 69 9...h6 71 9...0-0 74 Lines C and D are the best tries, but White has some chances to preserve an edge in both.

A: B: C: D:

Other continuations are less popular: a) 9 ... lb7b6 10 e4 (10 .id3 8... lb7b69 i.d3.ib41O l:tcl) 1O... lbxc3 11 bxc3 .ia3 12 l:tbl (12 l:tc2f6 13 .ie3 0-0 14 .id3, Stock-Augustat, Rowy 2000, 14... e5!? 15 0-0 .ig4 16 'it'e2 l:tae8 17 h3 .ih5 =) and then:

al) 12 ... 0-0 13 l:tb3 (13 .id3 was played in da Silva-Moyses, Sao Paulo 1998, and now 13 ... c5!? 14 iLe7 cxd4 15 .ixa3 'iWxa3 16 cxd4 .id7 17 0-0 iLc6 18lbe5 restricts White to a slight advantage) 13 .. .f6 14 .ie3!? (14 .if4 e5 15 iLe3 iLe6, Fleischer-Jablonski, corr.1961, 16c4 'iia417d5;1;) 14....ie7 15 c4 'ii'xd2+ 16lbxd2 ;1;. a2) 12...e5 13.id3 f6 14 .i.e3 (Lechtynski-Chernikov, Rimavska Sobota 1990) 14 ... .ig4 (or 14... exd4 15 cxd4 'it'xd2+ 16 ~xd2 .ie6 17 d5 cxd5 18 lbd4.if7 19lbb5 dxe4 20 .i.xe4;1;) 15 d5 iLxf3 16 gxf3 .ic5 17 c4 'ii'a3 18 :b3 .i.xe3 19 l:txa3 .i.xd2+ 20 ~xd2 ;1;. b) 9... b6 10 .id3 .ia6 11 0-0 h6 12 .ih4 0-0 13 l:tfdl (13 .i.xa6 'ii'xa6 14 e4 lb5f6 15 l:tfel l:tfc8 16 a3 .if8 17 h3 ;I; Cvitan-Raicevic, Borovo 1981) 13 ....i.xd3 14 'it'xd3lbxc3 15 bxc3 iLa3 16 l:tc2 ;I; Arulaid-Mikenas, USSR 1949. c) 9... lbxc3 10 bxc3 iLa3 11 l:tbl 0-0 12 iLd3 e5 13 0-0 l:te8 14 'iVc2 h6 15 .i.h4 .i.d6 16 iLg3 (the alternative 16 lbd2, Pilnik-Martinez, Buenos Aires 1946, is also slightly better for White after 16... lbb6!? ;1;) 16 ...'it'c7 17 l:tfel (17 .if5 exd4 18 .i.xd6 'ii'xd619 cxd4 l:tb8 20 l:tfcllbfS 21 .i.xc8 l:texc8 ;I; Longobuco-Ayerra, Uruguayan Ch 1960) 17 ...b6 18 .i.h7+ 'itth8 19 iLf5 exd4 20 cxd4 .i.xg3 21 hxg3 lbf6 (Liptay-Toth, Budapest 1965) 22 .i.d3 iLe6 23 e4;1;.

7 cxd5 tiJxd5 8 "iid2 i..b4 d) 9 ... eSl0a3(l0i.d30-0-9... 0-0 10 i.d3 e5) 1O... i.xc3 (l0 ... i.d6 11 dxeS lLlxeS 12lLlxeS i.xeS 13 b4 i.xc3 14 'fixc3 lLlxc3 IS bxaS ± ECO) 11 bxc3 'fixa3 (ll...exd4 12 cxd4 'iixa3 13 e4 lLlSf6 14 i.d3 0-0 IS 0-0 with compensation) 12 e4lLlc7 (l2 ...lLlSb6!? 13 i.e2 with compensation, StocekKozlov, Budapest 1996) 13 i.d3 with compensation - Kasparov. A)

9...f6 Black forces the bishop to retreat, but at the obvious cost of weakening his kingside. 10 i.h4 0-0 Or: a) 1O ... lLlxc3 11 bxc3 i.a3 12 l:.bl lLlb6 13 i.d3 0-0 - 10... 0-0 11 i.d3 tbxc3 12 bxc3 i.a3 13 l:.bllLlb6. b) 10 ... gS 11 i.g3 hS 12 h4 g4 13 lLlgllLlfS 14 e4lLlxc3 IS bxc3 (SuarezGuzzardo, Argentina 1995) IS ... i.e7 16 i.d3;t. c) 10 ... eS 11 i.d3 0-0 12 0-0 (12 1IVc2 exd4 13lLlxd4, Johner-Bernstein, Berne 1932, 13 ... 'ii'xa214i.xh7+~h8 IS i.e4 i.xc3+ 16 bxc3 'ii'xc2 17 l:.xc2 =) 12... l:.e8 (12 ... exd4 13 exd4 - 9... 0-0 10 i.d3 e5 11 0-0 exd4 12 exd4 f6 13 i.h4) 13 'iic2 lLlf8 14 dxeS fxeS IS lLlgS (± old ECO) Gligoric-Bradvarevic, Titograd 1965. 11 e4 Other moves: a) 11 i.c4lLl7b6 12 i.b3 lLlxc3 13 bxc3 i.a3 14 l:.c2 (14 l:.bl cS IS dxcS 'fixcs is equal, Najdorf-Rossetto, Mar del Plata 1945) 14 ... cS IS 'ii'd3 c4 16 i.xc4 lLlxc4 17 'ir'xc4 i.d7 18 0-0 .l:.ac8 with compensation (old ECO), Stahlberg-Spielmann, Moscow 1935.

69

b) 11 i.d3 l:.e8 (l1...lLlxc3 12 bxc3 i.a3 13 l:.bl lLlb6 {13 ... 'fihS 14 i.g3 i.e7 IS 'fic2 'iii'h8 16 0-0 ± NajdorfGuimard, Mar del Plata 1943} 140-0 'ii'a4 IS l:tb3 cS 16 'iic2! h6 17 i.bS 'fiaS 18 lLld2! ± Lautier-Hort, Biel 1990) 120-0 (Malishauskas-An.lvanov, corr. 1988) 12... i.d6 13 lLlxdS 'iixdS 14 i.g3;t. 11 ...lLlxc3 ll...lLle7 12 i.e2lLlg6 13 i.g3 (EIoranta-Hedberg, corr. 1990) 13 .. .fS!?;t (though Black has some counterplay). 12 bxc3 i.a3 13 l:.bllLlb6 Worse is 13 ... eS 14 i.c4+ ~h8 IS 0-0 lLlb6 16 i.b3 i.g4 (Jandke-Perlstrom, corr. 1987) 17 dxeS! i.xf3 18 exf6 'ii'hS 19 'ii'd4! l:.g8 20 fxg7+ l:.xg7 21 i.f6 ±. 14 e5!? White has a small advantage. Worse is 14 i.d3 cS (14 ... i.d7, Turn-Rometti, Buenos Aires OL 1939, IS eSt? ;t) IS i.g3 (1S eS c4 16 i.e2 fS 170-0 h6 =) lS ... i.d7 =. B)

9...c5 (D)

Black strikes at the centre, but his pieces tum out not to be arranged in

70

THE CAMBRIDGE SPRINGS

perfect harmony with this thrust. Now White has a pleasant choice: Bl: 10 .i.d3 70 B2: 10 e4!? 70 B3: 10 a3 71 B1) 10.i.d3 White develops, content with his chances in the resulting IQP position. This is a reasonable idea, but not the most critical. 10•••cxd4 11 exd4 h6 Or: a) 11...0-0 120-0 tD7f6 (l2 ...b6 13 a3 i.xc3 14 bxc3 'ilxa3 IS c4 tDSf6 16 cS bxcS 17 dxcS ;t Ikonnikov-Lacrosse, Massy 1993) 13 i.bl i.xc3?! (13 ...h6!?) 14 bxc3 bS IS tDeS ± SlajsBayer, Klatovy 1997. b) l1...b6 120-0 and then: bl) 12 ... .i.xc3 13 bxc3 h6 (SchenkWach, Passau 1998) 14 c4!? 'ilxd2 IS i.xd2 ±. b2) 12... i.b7 (Farrell-Parker, Scottish Ch 1994) 13 tDxdS i.xdS 14 'ile2 h6 IS i.f4 i.e7 16 a3 a6 17 l:tc7 bS 18 l:tfcl ±/ +-. 12 i.h4 0-0 12 ...b6!? is an interesting alternative: 13 a3 i.xc3 14 bxc3 i.b7 IS i.g3 (IS c4 'ilxd2+ 16 'ifi>xd2 tDf4 17 tDel tDxd3 18 'itxd3 =) IS ... tDSf6 16 'ilb2 (16tDeS i.xg217 l:tgl withcompensation) 16 ... i.xf3!? (l6 ... i.a6 17 i.xa6 'ilxa6 18 c4 0-0 190-0 1/2- 1/2 SakaevFilippov, Smolensk 2000) 17 gxf3 l:tc8 with a good position for Black. 130-0 b6 Worse is 13 ... i.d6 14 tDxdS (alternatively, 14 i.bl l:te8 IS :tfel i.f4 16 'ild3 tDf8 17 l:tcdl i.d7 18 tDeS tDxc3 19 bxc3 i.a4 20 i.c2 l:tac8 21 c4 1/2-1f2

M.Jmgensen-He.Hansen, Copenhagen 2001) 14...'ilxd2 IS tDxd2 exdS 16 l:tfel tDb8 17 tDb3 i.e6 18 tDcs ;to 14a3 14 .i.bl i.a6 (l4... i.b7 IS 'ild3 g6 16 tDxdS 'ilxdS 17 a3 i.d6 = BrostromBeyen, Lugano OL 1968) IS 'ilc2fS 16 tDxdS 'ilxdS 17 ':'fd 1 .i.d6 (17 ... i.b7 18 .ig3, Polugaevsky-Janosevic, Amsterdam IBM 1970, 18 ... .i.d6!? gives Black good chances for equality) 18 'ild2 l:tac8 19 ':'xc8 ':'xc8 20 i.g3 i.e7 21 tDeS i.gS '+ Barishchev-Botvinnik, Leningrad 1926. 14...i.xc3 15 bxc3 .i.b7 16 l:tfdl Other moves: a) 16 i.e4 fS 17 .i.xdS i.xdS 18 i.e7 ':'f7 '+ Pelletier-OIl, Elista OL 1998. b) 16 i.bl 'ilxa3 17 c4 tDSf6 18 tDeS!? (18 dS exdS 19 tDd4, VeghPinter, Budapest 1986, 19 ... dxc4!? 20 l:txc4 'ild6 -+) 18 ... .:.fc8 19 l:tfel 'ild6 20 tDxd7 tDxd7 21 i.g3 'ile7 22 dS tDf8 and White does not have full compensation. 16.•.l:tac8 16... 'ilxa3!? 17 c4 'ilxd2 18 tDxd2 tDf4 19 i.n g5 20 i.g3 White has slightly better chances, Ki.Georgiev-Rabiega, Ohrid Ech 2001. B2) 10 e4!? White forces the pace, seeking to maintain a powerful presence in the centre. 10..•tDxc3 Or 1O...tDSf6 11 i.xf6 (II i.d3 cxd4 12 tDxd4 0-0 13 0-0, Stahlberg-Monticelli, Warsaw OL 1935, 13 ... h6 14 i.h4 'ilhS IS tDf3 b6 16 a3 i.xc3 17

7 cxd5 4lxd5 8 "iid2 i.b4 l:txc3 i.b7 ;1;) 1l...ltJxf6 12 i.b5+! (12 i.d3 cxd4 13ltJxd4 0-0 14 a3 i.e7 15 b4 'iVh5 16 0-0 l:td8 =Mikenas-Yates, Prague OL 1931) 12.. .'iiI>e7 (12 ... i.d7 13 i.xd7+ ltJxd7 14 a3 i.xc3 15 'fixc3 ~xc3+ 16l:txc3 cxd4 17ltJxd4 ~e7 18 'it'e2l:thc8 19 l:thc1l:txc3 20 l:txc3 ;1;) 13 e5 ltJe4 14 llVe3 ltJxc3 15 bxc3 ~xb5 16 'S'g5+ ~e8 17 cxb4 'S'xb4+ 18 ltJd2 llVxd4 19 llVxg7 l:tf8 20 ltJc4 ~e4+ 21 ~f1 ;1;. 11 bxc3 i.a3 12l:tbl a6!? Worse are: a) 12... cxd4 (Schneider-Milller, Bad Wildbad 1997) 13 cxd4 'fixd2+ 14 'it'xd2 f6 15 i.f4 ±. b) 12... 0-013 i.d3 a6 (Euwe-Michell, Hastings 1934/5) 14 l:tb3 .:te8 15 0-0 b5 16 c4 b4 17 d5 exd5 18 exd5 ±. 13 i.e2 b5 14 0-0 cxd4 15 ltJxd4 0-0 16 c4 'fixd2 17 i.xd2 bxc4 18 i.xc4 White has the better ending. 83)

10a3 White spends a move (and often a pawn) to gain the bishop-pair and to reinforce his pawn-centre. 10.•.i.xc3 11 bxc3ltJ5f6 Or: a) 1l...b6 12 i.d3 h6 13 i.h4 9... h6 10 i.h4 c5 11 a3 i.xc3 12 bxc3 b613 i.d3. b) 11.. .cxd4 was played in Goldenberg-Biaux, corr. 1984-90, and now 12 exd4 'fixa3 13 c4 ltJb4 14 i.e2 h6 15 i.f4 is slightly better for White. 12 i.d3 b6 13 0-0 i.b7 13 ... i.a6 14 e4 cxd4 (14 ... i.xd3 15 ~xd3 l:tc8 {15 ... c4!? 16 'S'c2 ;1;} 16 ltJd2 0-0 17 'S'g3 ;1;; 14... 0-0 15 e5ltJd5 16 i.xa6 'ti'xa6 17 c4 ltJc7 18 d5 exd5

71

19 cxd5 'ti'xa3 ;1;) 15 i.xa6 llVxa6 16 llVxd4lli'b7 (16 ...'fixa3? 17 e5ltJd5 18 c4ltJe7 19l:tfd1 l:td8 20 .:tal llVc5 21 l:txa7 +-) 17l:tfe1 (17 e5ltJe4!) 17 ... h6 18 i.h4 0-0 19 e5 ltJh7 20 l:tcd 1 ltJc5 21 llVg4 with an initiative (Lautier). 14 llVe2 0-0 Other moves: a) 14...ltJe4? 15 i.xe4 i.xe4 16ltJd2 ± intending ltJc4 (Lautier). b) 14 ... cxd4?! 15 cxd4 has the point 15 ... i.xf3? 16llVxf3 (Lautier). c) 14 ...'S'xa3?! 15 l:.a1 'iVxc3 16 l:.fc1 'fib4 17 i.xf6 gxf6 18l:tab1 'fia3 19 i.b5 c4 20 l:.xc4 ;1;. d) 14 ... i.xf3 15 'fixf3 0-0 16 'iVg3 .:tfc8 17 e4 c4 18 i.b1 'fixa3 19 e5 ltJd5 20 i.e4 'fia4 21 i.h6 g6 22 f4 with an attack. 15 e4 l:tfc8 16 e5 cxd4 17 cxd4 i.xf3 Or: a) 17 ... ltJd5?! 18 i.d2! llVxa3 19 i.xh7+! 'it'f8 20 i.d3 with an attack (Lautier). b) 17 ... ltJe8 18 i.e7! 'iVd5 19 l:.fe1 and the idea of i.c4 keeps the initiative (Lautier). 18 'ti'xf3 ltJd5 19 i.e4 White has a small advantage, Lautier-Z.Almasi, Austrian Cht 1999/00.

C) 9...h610 i.h4 (D) Having chased White's bishop back, Black must now make a major decision: Cl: 10...0-0 72 C2: 10...c5 72 Less popular are: a) 1O...b6 11 i.d3 c5 12 0-0 0-0 13 i.bl! (13 a3 i.xc3 14 bxc3 i.a6 15

72

THE CAMBRIDGE SPRINGS

B

14 i.g3 exd4 15 cxd4 1'i'xd2+ 16 tt'lxd2 tt'lb6 (Dalko-Bergraser, COIT. Wch 1962-5) 17 tt'lc4 tt'lxc4 18 i.xc4 b5 19 i.b3 lIe8 =. 14•••i.d6 14...b6?! 15 i.g3 i.d6 16 0-0 ':e8 171'i'c2 ± Lindh-Gil, COIT. 1975. 150-0 exd416 cxd41'i'xd217 tt'lxd2 White has a small advantage. C2) 10••.c5 (D)

i.xa61'i'xa6 16 e4;1; Moiseenko-Nadyrkhanov, Krasnodar 1999) intending to continue l:Hdl ;1; Beliavsky. b) 1O... tt'l7f6 11 i.d3 c5 12 e4 cxd4 13 tt'lxd4 tt'lxc3 14 bxc3 i.a3 15 lIbl ;1; Schreiber-Trifunovic, Novi Sad 1936.

Cl) 10.•.0-011 e4 Or: a) 11 i.d3 - 9... 0-0 10 i.d3 h6 11 i.h4. b) 11 a3 i.xc3 12 bxc31'i'xa3 13 e4 tt'l5b6 14 i.d3 lIe8 15 0-0 e5 16 i.g3 exd4 17 cxd4 tt'lf8 18 ':fe 1 i.e6 19 .l:.al 1'i'e7 gives White compensation, Kramnik-Lobron, Frankfurt 1995. c) 11 i.c4 tt'lxc3 12 bxc3 i.a3 13 .l:.bl e5 14 i.g3 (or 14 0-0, VillegasCastillo Larenas, Buenos Aires 1935, 14... e4!? 15 tt'lel tt'lb6 16 i.e2 i.d6 leads to an excellent game for Black) 14... exd4 15 cxd4 1'i'xd2+ 16 tDxd2 tt'lb6 17 i.c7!? (17 i.b3 i.f5 18 e4, Alekhine-Nimzowitsch, Zurich 1934, 18 ... i.g6 19 f3 ':ad8 20 i.f2 i.e7 21 a4 ;1;) 17 ... tt'lxc4 18 tt'lxc4 i.e7 19 tt'la5 c5 20 0-0 (20 d5!?) 20 ... cxd4 21 exd4 ;1;. 11.•.tt'lxc3 12 bxc3 i.a3 13 lIb1 e5 14 i.d3

Black claims that the insertion of the moves ... h6 and i.h4 improves his chances in comparison with Line B. There is considerable justification for this claim, but still we don't quite trust Black's position. Let's see: C21: 11 a3 73 C22: 11 i.e2 74 Or: a) 11 e4 is ineffective in this position: 11...tt'l5f6! 12 i.d3?? (12 e5 tt'le4 is fine for Black) 12... g5 13 a3 i.xc3 14 lIxc3 gxh4 15 dxc5 h3 -+ BosboomM.Gurevich, Wijk aan Zee 2001. b) 11 i.d3 cxd4 (l1...b6 - 1O. .. b6 11 i.d3 c5) 12 exd4 - 9... c5 10 i.d3 cxd4 11 exd4 h6 12 i.h4.

7 cxd5 li1xd5 8 'ild2 Ji.b4 C21) 11 a3 .txc3 12 bxc3 b6 12 ...'iixa3 is also good. 13 e4ltJSf6 14 .td3 'iiaS IS dS and then: a) IS ... exd5?! 16 eS! ltJg8 (16 ...ltJe4 17 .txe4 dxe4 18 'iid6 gS 19 ltJxgS! "iVb6 20 ltJxe4 'iixd6 21ltJxd6+ ~f8 22 f4 ± Petursson-Halasz, Nrestved 1988) 17 e6 fxe6 18 .tg6+ 'ittf8 19 'iif4+ ltJdf6 20 ltJeS with a dangerous initiative. b) IS ...c4! 16dxe6(16.txc4liJxe4!? {16 ... exdS 17 .txdSltJxdS 18 exdS 0-0 190-0 f6 20 :felltJb6 21 c4 'iixd2 22 ltJxd2 .tfS 23 f3! ;!; intending .tf2 followed by .txb6 (ECO), M.GurevichCardon, Belgium 1994} 17 'ifd4 ltJdf6 18 .txf6ltJxf6 19 dxe6 .txe6 20 .txe6 fxe6 +) 16... cxd3 17 exd7+ ltJxd7 18 'iVxd30-0 190-0 l:te8 =. 13.td3 Other moves: a) 13 e4 ltJSf6 14 .td3 .tb7 (or 14... .ta6 IS .txa6 'iixa6 16 eSltJh7 17 dS 00 Atalik-Nogueiras, Havana 1999) IS dS c4 and here: al) 16 .tc2 exdS 17 eS ltJe4 18 .txe4 dxe4 19 e6 0-0 20 'iixd7 exf3 21 'ii'xb7 'iieS+ 22 'ittfl 'iif4 23 exf7+ ~h7 24 :el fxg2+ 2S 'iti>xg2 'iixh4 26 l:thgl :ad8 27 l':te3 (27 'iie4+ 'iixe4+ 28 l':txe4 l:txf7 29 l:txc4 l:td2 is much better for Black) 27 ...'iigS+ (27 ...'iig4+, 1/2- 112 Ivanisevic-Sedlak, Herceg Novi 2001, 28 'itth 1 l':td 1 29 l:txd 1 'iixd 1+ 30 ~g2 'iig4+ 31 :g3 'iie6 +) 28 ~hl 'ilVdS+ 29 'iixdS :xdS 30 :e7 :as 31 l:tal ~g6-+. a2) 16 dxe6 cxd3 17 exd7+ ltJxd7 18 'iixd3 gS 19 .tg3ltJcS 20 'iid6 1/2-1fz Kramnik-Ivanchuk, Novgorod 1995. b) 13 ltJeS ltJxeS 14 dxeS gS (or 14....td7!? IS e4ltJe7 16 .txe7 'ittxe7

73

17 'iib2 l:thd8 with good play for Black) IS .tg3 (1S e4ltJe7 16 .tg3 {16 :dl?! 0-0 with a development advantage for Black, Scherbakov-Goloshchapov, Ekaterinburg 1999} 16....tb7 17 .td3 :d8 +) IS ....tb7 16 e4 (16 .te2 :d8 17 'iib2 .ta6 is equal) 16... ltJe7 17 f3 l:td8 (17 ... 'iixa3!?) 18 'iib2 .ta6 19 .txa6 liz-liz Lugovoi-Aseev, St Petersburg 1998. However, the position looks a little better for Black. c) 13 'iib2!? needs to be tested in practice; e.g., 13 ... cxd4 (13 ... 0-0 14 .tbS cxd4 IS ltJxd4 a6 16 .tc6 ;!;) 14 ltJxd4 .tb7 IS e4 liJf4 16 ltJbS 0-0 17 .tg3 ;!;. 13...cxd4 Or: a) 13 ....ta6 14 0-0 (14 c4 'iixd2+ IS ltJxd2 ltJSf6 16 ~e2 ;!; Beliavsky) 14 ...ltJSf6 (14 ... cxd4 IS .txa6 'iixa6 16 'iixd4 0-0 17 e4 ltJf4 18 'iixd7 ltJe2+ 19 'itthlltJxc120 l':txcl 'iixa3 21 'iid2 ;!; Rogozenko-M.Gurevich, Moscow FIDE KO 2001) IS e4 .txd3 16 'iixd3 cxd4 17 cxd4 0-0 and now Sakaev's recommendation 18 .txf6! (18 :c7 :ac8 = San Segundo-Dorfman, Mondariz 2000; 18 l':tc2 l':tac8 19 :fcl l:txc2 20 :xc2 l:td8 21 .txf6 ltJxf6 22 h3 bS 23 l:tcS = Khalifman-Yusupov, Istanbul OL 2000) 18 ... ltJxf6 19 ltJeS (intending ltJc6) favours White. b) 13 ....tb7 140-0 (14 c4!? 'iixd2+ ISltJxd2ltJSf6 16 f3 :d8 17 l:tbl 'iti>e7 18 ~e2;!;) and then: bl) 14...0-0 IS 'iib2 (1SltJeSltJxeS 16 dxeS c4! 17 .txc4 l:tfc8 18 .txdS .txdS with a good game for Black, Gligoric-Blagojevic, Herceg Novi 2001; IS e4ltJSf6 16 'iie2 cxd4 17 cxd4 l:tfc8 18 'iie3 liz-liz Zontakh-Blagojevic, Herceg Novi 2001) IS ...:fc8 16ltJd2 cxd4

74

THE CAMBRIDGE SPRINGS

17 cxd4 ..ta6! (= Beliavsky), Nepomnishay-Prie, Paris 1996. b2) 14 ... lLl5f6 15 'ii'e2 (15 'ii'b2 ..txf3!? {15 ... 0-0 16 lLld2 cxd4 17 cxd4l:Hc8 18lLlc4 ± Gomez EstebanEstremera Panos, Barcelona 2000} 16 gxf3 0-0 17 ..tg3 l:.fc8 18 l:tfdl a6 =) 15 ... 0-0 16lLld2 and then: b21) 16 ... cxd4 17 cxd4 l:.ac8 (after 17 .. :~xa3 18 l:tc7 White has more than sufficient compensation) 18 lLlc4 'iWa4 19 f3! ..ta6?! (19 ... ..td5!? Beliavsky) 20 ..tg3 .txc4 21 .txc4 'iWxa3 22 l:.al 'iWb4 23 ..ta6 l:.ce8 24 l:.fbl 'iWe7 25 ..tel! ± Beliavsky-Rabiega, Graz 1996. b22) After 16... 'iWxa3!? White is unable to trap the queen. The c-file is closed and White has nothing better than 17 l:.al 'iWxc3 18 l:.fc1 'iWb2 19 l:.cbl 'iWc3 with a draw. 14 cxd4 14 exd4 .tb7 15 c4 'iWxd2+ 16 'iitxd2 lLlf4 17 ..tg3 lLlxd3 18 'iitxd3 ..txf3 19 gxf3 =. 14••.'iWxa3 15 ..tb5 ..ta6 16 ..tc6 lLlb4 17 ..txa8 lLld3+ 18 'iitdllLlb2+ Black gives a perpetual check.

18...:e8 19 lLlc2 The manoeuvre lLlb4-d5 gives White a small advantage .

Black keeps his options open about whether to force the g5-bishop back, and how and when to strike in the centre. Now: Dl: 10.td3 75 D2: 10 e4!? 80 The latter looks a little loosening, but is probably the better option.

C22) ll..te2 This move seems to pose Black the greatest problems, though experience so far is limited. 1l•.•cxd4 12lLlxd4 0-0 13lLlb3 'iWb6 14 0-0 lLlxc3 15 bxc3 .ta3 16 l:.bl 'iWc7 17 l:tfdl e5 18lLlal!? 18 c4 l:.e8 19lLla5!? (19..tf3 'iWxc4 20 ..tg3lLlb6 21lLla5, Dimitrov-Pelletier, Barcelona 2000, and now 21...'iWc7 +) 19 ... ..te7 20 ..txe7 l:.xe7 21 'ii'd6 (21 'iWd5 lLlf6 22 'iWd8+ ~h7 23 l:tb2 'ii'xd8 24 l:.xd8 l:.c7 =) 21...lLlf6 22 l:tb2 ~h7 23 c5 l:.d7 24 'ilixc7 l:.xc7 =.

Or 10 a3 ..txc3 11 bxc3 'iWxa3 12 e4: a) 12 ... lLl5b6 13 i.d3 f6 14 i.e3 (14 ..th4 e5 15 0-0, Lima-Limp, Santos 2001, 15 .. :~e716..tg3l:.e817 :al a5 18 :fb1 a4 with a good game for Black) 14... c5 15 'iWe2 (15 0-0 c4 16 ..te2 f5 17 e5 'iWa4 18 %:tal 'iWc6 19 'iWa2 with compensation) 15 ... a5 160-0 cxd4 17 cxd4 a4 18 'ii'c2 with compensation. b) 12... lLl5f613 ..td3 e5 140-0 'iWe7 (l4 ... l:.e8 15 ..txf6 gxf6 16 lLlh4 lLlf8 17 f4 exd4 18 cxd4 'iWd6 19 lLlf3 ..tg4 with compensation, H0i-L.B.Hansen, Danish League 199617) 15 ..th4 (15 'iWc2 :e8 16 ..th4 h6 17 l:.al c5 +)

D) 9•••0-0 (D)

7 cxd5 lilxd5 8 'iid2 i.b4 IS ... l:.e8 16 i.g3 exd4 17 cxd4 ttJf8 18 l:.fe1 'ii'd8 19 'ii'c3 as and White does not have full compensation. OI} 10 i.d3 A sensible developing move. White waits to see Black's intentions before deciding how to act in the centre. Now: Dll: 10...e5 7S D12: 10...h6 77 Other moves: a) 1O... fS 11 0-0 h6 12 i.h4 ttJ7f6 13 a3 i.xc3 14 bxc3 ttJe4 IS i.xe4 fxe4 16 ttJeS "ifxa3 17 c4 ttJf6 18 cS 'ii'b3 19 f3 ± Kveinys-Banasik, Katowice 1990. b) 1O... cS 11 a3 i.xc3 12 bxc3 cxd4 13 cxd4 "ifxa3 14 e4 ttJb4 IS i.bl ttJc6 16 0-0 (Peek-Vedder, Antwerp 1999) 16 ... eS 17 dxeS ttJdxeS 18 ttJxeS ttJxeS 19 l:.c7 with compensation. c) 10... l:.e8 and now: c1) 11 0-0 h6 (1l...eS - 1O... e5 11 0-0 l:.e8) 12 i.h4 cS (Hauchard-Anie, Vichy 2000; 12 ... eS - 1O... h6 11 i.h4 e5 12 0-0 l:.e8) 13 a3 cxd4 14 axb4 dxc3 IS i.h7+ ~h8 16 bxc3 "ifb6 17 i.d3 ttJSf6 18 c4 ±. c2) 11 e4 ttJxc3 (1l...eS 12 0-0 1O... e511 0-0 l:.e8 12 e4) 12 bxc3 i.a3 13 l:.c2 (13 l:.b1 eS 14 i.e3 i.d6 IS 0-0, Stohl-Anie, Pula 1999, IS ... exd4 16 cxd4 'ii'xd2 17 i.xd2 cS 18 i.e3 cxd4 19 i.xd4 ttJcS 20 eS i.e7 21 i.xcS i.xcs 22 i.e4 l:.b8 23 l:.fd 1 b6 =) 13 ... eS 14 0-0 exd4 IS cxd4 "ifxd2 16 ttJxd2 ttJb6 (16 ... h6 17 i.h4 ttJb6 18 l:.b1 i.e6 19 f4 ;!; Chemes-Piazzini, Buenos Aires 19S9) 17 f4 f6 18 i.h4 i.e6 19 fS i.f7 ;!; Zakhvatov-Schueler, Rowy 2000.

75

Oll} 10...e511 0-0 Black strikes in the centre, but White ignores him, happy for Black to open lines by exchanging on d4. 1l•.•l:.e8 Instead: a) ll...h6!? 12 i.h4 - 1O... h6 11 i.h4 e5 12 0-0. b) 11...exd4 12 exd4 and now: bI) 12... f6 13 i.h4 l:.d8 14 'ii'c2 (14 a3 i.xc3 IS bxc3 ttJf8 16 i.g3 ;!; Kasparov-Smyslov, Vilnius Ct (3) 1984) 14... ttJf8 IS i.g3 (Defize-Nauts, Huy 1991) IS ... i.e6 16 l:.fel i.f7 17 ttJd2 ;!;.

b2) 12... ttJ7f6 13 a3 (13 l:.fel 'ii'd8 14 i.b1 i.e6 IS ttJeS i.e7 16 a3 ttJxc3 17 "ifxc3 ;!; / = Vaganian-Libeau, Bundesliga 1995/6) 13 ... i.e7 14 l:.fel 'ii'd8 IS ttJxdS ttJxdS 16 i.xe7 ttJxe7 17 l:.eS ;!; Panizzi-Raveggi, COIT. 1987. b3) 12...ttJ7b613 a3 i.d6 and then: b3I) 14 'ii'c2 (W1.Schmidt-Khechen, Thessaloniki OL 1984) 14 ... ttJxc3!? IS bxc3 (1S i.xh7 + <J8>h8 16 bxc3 i.g4 17 ttJeS i.xeS 18 dxeS 'ii'xeS =) IS ... h6 (lS ... i.g4 16 i.xh7+ <J8>h8 -15 Lh7+ ~h8 16 bxc3 i.g4) 16 i.d2 i.g4 17 c4 'ii'hS 18 ttJeS i.xeS 19 dxeS 'ii'xeS =. b32) 14 ttJxdS 'ii'xdS IS i.f4 i.g4 16 ttJgS h6 17 i.xd6 'ii'xd6 18 ttJe4 'ii'xd4 19 ttJd6 ~h8 20 ttJxb7 is slightly better for White. b4) 12 ... Ue8 and here: b41) 13 i.bl ttJf8 14 'ii'd3 i.d6 (14 ... ttJxc3 IS bxc3 i.d6 16 i.d2 'ii'hS 17 h3, Peters-Schaub, Kassel 1996, 17 ... i.e6 =) IS l:.feli.g416 ttJe4 ttJf4 17 'ii'd2 "ifxd2 18 ttJfxd2 i.c7 with a good game for Black. b42) 13 "ifc2 ttJf8!? (13 ... h6, KurzMeyer, Bundesliga 1986/7,14 ttJxdS!?

76

THE CAMBRIDGE SPRINGS

;1;) 14 .i.d2 .i.e6 IS l:lfel .i.e7 16 a3 ttJxc3 17 .i.xc3 =. We return to 1l...l:le8 (D):

Now threats of ... e4 force a response from White: 0111: 12 'ii'e2 76 0112: 12 e4 76

0111) 12 'iVe2 h6 13 i.h4 exd4 13 ... ttJxc3 14 bxc3 .i.d6 IS .i.g3 'ii'c7 16 e4 (16 %:tfel!? ;1;; 16 .i.fS ;1;) 16... exd4 17 cxd4 i.xg3 18 hxg3 ttJf6 19 lHel 'ii'e7 20 'iVc3 i.e6 21 i.bl l:lad8 22 ttJeS 'iVd6 23 .:tcdl ttJd7 = Franic-Nikolac, Pula 1998. 14 ttJxd5 Or 14 exd4: a) 14 ...ttJf8 IS i.g3 (1S ttJxdS 'iVxdS 16 i.c4 'iVhS 17 'ii'b3 ;I; MoiseenkoOvetchkin, Rotterdam 1998) IS ....i.e6 (YljOla-Pinkas, Voronezh 1987) 16 l:lfel i.e7 17 a3 ttJxc3 18 bxc3 i.dS 19 ttJeS ;1;.

b) 14...ttJ7b6 IS ttJeS i.e6 16 i.h7+ ~h8 17 .i.fS ~g8 18 i.h7+ ~h8 19

i.fS 'ittg8 liz-liz Piket-Ivanchuk, Monte Carlo Amber blindfold 1993. 14..•'iVxd5 Now:

a) IS exd4 ttJb6 (IS ... 'ii'xa2!?) 16 a3 (16 .i.g3 'iVxa2 17 ttJeS i.e6 + Shirov-Piket, Aruba (6) 1995) 16... .i.d6. Although ECO assesses this position as unclear, it seems to be slightly better for White. b) Piket suggests that IS ttJxd4 is only equal. In our opinion the position is nicer for White but Black should gradually equalize; e.g.: bl) IS ... ttJeS 16 i.h7+ ~h8 17 a3 g618axb4..t>xh719i.g3a6(19 ... ttJd7 20 l:lfdl 'ii'e4 21 'ii'b3 ..t>g8 22 bS cS 23 ttJf3 b6 24 l:ld6 ttJf8 2S ttJd2 ;1;) 20 l:lfdl f6 21 ttJb3 'iVf7 22 ttJcS 'ii'e7 23 'ii'c3 ttJf7 24 l:ld4 ;1;. b2) IS ... ttJb6 16 a3 i.d6 17 ttJfS (17 i.e2 l:le4 18 .i.g3 i.xg3 19 hxg3 i.g4 20 i.xg4 .:txg4 =) 17 ... i.xfS 18 i.xfS 'iieS 19 i.g3 'ii'f6 20 i.xd6 'ii'xd6 21 %:tfdl 'ii'f6 22 l:ld2 g6 23 i.e4 (23 .i.d3 %:te6 24 l:lcd 1 .:td6 2S i.n l:lad8 26 l:lxd6 l:lxd6 27 .:txd6 'iixd6 is equal) 23 ....:tad8 24 i.d3 ':'e7 2S l:lcdl l:led7 26 .i.n l:lxd2 27 l:lxd2 l:lxd2 28 'ii'xd2

= 0112) 12e4 This move gives Black the most problems. 12...ttJe7 No better are: a) 12 ... exd4 13 exdS dxc3 14 bxc3 i.a3 IS dxc6 (Tsvetkov-Hounie Fleurquin, Buenos Aires OL 1939) IS ... ttJeS 16 l:lcel ttJxf3+ 17 gxf3 ;1;. b) 12 ... ttJxc3 13 bxc3 .i.a3 14 %:tbl b6 is equal according to Bareev but White's position looks better; e.g., IS .:tfd 1 i.a6 16 .i.xa6 'iVxa6 17 'ii'c2 cS 18 dS;I;. 13 a3 i.xc3

7 cxd5 4:Jxd5 8 fid2 .i.b4 13 .....tf8 14 dS cS IS fie2 intending ..td2 ± (Bareev). 14 fixe3 fixc3 15 l:txe3 lLle6 16 ..te3 exd4 17 lLlxd4 Bareev-Pinkas, Voronezh 1987. Black should now play 17 ...lLlecS! 18f3lLlxd3 191hd3lLleS 20 l:tc3 ;I; (Bareev). 012) 10.••h6 A major motivation for this move here is to make the f4-square available to Black's knight in some lines. This would have made a major difference in Line Dl12. 1l..th4 Or 11 ..tf4 (this looks odd, but the idea is to clamp down on ... eS ideas) 1l...lLlxf4 12 exf4lLlf6 13 0-0: a) 13 ... cS 14 dxcS ..txcS (14 ...lLldS!? ;1;) IS a3 ..te7 16lLleS :td8 17 fie2 g6 18 :tcd1 fic7 19 lLlbS! (19 ..tb1 ..td7 20 :td3 ..te8 21 l:tg3 ..tf8 is unclear, Hillarp Persson-Vera, Erevan OL 1996) 19... fics (19 ... iib6 20 ..txg6! fxg6 21 'iVc2 lLle8 22 fixg6+ 'Dg7 23 fif7+ +-) 20 ..txg6 fxg6 21 b4 iib6 22 fic2 'De8 23 fixg6+ 'Dg7 24 fif7+ +-. b) 13 ... 'DdS!? 14..te4(14l:tfe1 :te8 IS .tb1 fid8 16 fid3 g6 17 'DeS fif6 18 fig3 <J;g7 =) 14 ... fid8 IS :tfe1 ..td6 16 g3 l:.e8 17 fie2 'Df6 =. 1l ...e5 Less popular are: a) 11...b612 a3 .txc3 13 bxc3 fixa3 (13 ... .ta614 c4 fixd2+ IS ~xd2 'DSf6 16 e4 ± Borisenko-Bergraser, COIT. Wch 1962-S) 14 e4 'De7 IS 0-0 eS 16 :tal fid6 17 .tg3 'Dg6 18 h4 ;1;. b) 1l...l:te8 12 a3 (12 0-0 eS 11 ... e5 12 0-0 l:te8) 12... ..txc3 13 bxc3 fixa3 14 0-0 eS IS 'DxeS 'DxeS 16 dxeS fics (16 ...:txeS 17 e4 'Db6 18 f4

77

and the idea of fS gives White compensation - Shirov) 17 <J;h1 .te6 (17 ...l:txeS 18 e4 'Db6 19 f3 l:thS 20 .tf2 fid6 21 f4 with compensation) 18 e4 'Db6 19 f4 ;I; Shirov-Piket, Amsterdam 1995. c) 11.. .cS and then: c1) 12 a3 ..txc3 (12 ...cxd4?! 13 axb4 dxc3 14 bxc3 iib6 IS 0-0 as 16 e4 'DSf6 17 :tal ± Greenfeld-Khuzman, Haifa 1996) 13 bxc3 fixa3140-0fS1S .:tfd1 cxd4 16 cxd4 as 17 .tbS with compensation. c2) 12 0-0 cxd4 13 'Dxd4 lLlcs 14 .tb1 'Dxc3 IS bxc3 ..ta3 16 :ted1 ;1;. We return to l1...eS (D):

Now: 0121: 12 a3?! 77 0122: 12 0-0 78 As the markings indicate, the latter is the main line. 0121) 12 a3?! We do not believe in this pawn sacrifice in this instance. 12....txe3 13 bxe3 exd4 Or: a) 13 ...:te8 14 c4 fixd2+ IS 'Dxd2 'De7 (lS ... 'Dc7? 160-0 'De6 17 :tfe1 b6 18 ..tfS exd4 19 exd4 ± Beliavsky-Oll,

78

THE CAMBRIDGE SPRINGS

Dutch Cht 1994/5; 15 ... ltJ5f6 16 0-0 exd4 17 exd4 c5 18 d5 ltJe5 19 ..tc2 g5 20 .ig3 ± Valsser-Anic, Vichy 2000) and then: a1) 16 0-0 exd4 17 exd4ltJf8 (another idea is 17 ... ltJb6!?) 18 .l:.fe1 iH5 19.in (19lhe7 .ixd3 20 l:txb7ltJe6 provides compensation - Beliavsky; 19 ..txe7 ..txd3 20 l:tc3 .if5 21 l:tf3 .ie6 22 ..tb4 .l:.ad8 =) 19... ltJeg6 20 ..tg3 .l:.xe1 21 l:txe1 l:td8 = Beliavsky011, Po1anica Zdroj 1996. a2) 16 ..txe71he7 17 d5;!; (ECO). b) 13 ...'i'xa3 14ltJxe5ltJxe5 15 dxe5 ltJe7 (15 ... .l:.e8, Bogo1jubow-A1ekhine, Berlin Wch (12) 1929, 16 f4 a5 17 e4 ltJb6 18 0-0 ltJa4 19 c4 'i'b4 20 'i'c2 ltJc5 =) 16 0-0 (16 e4ltJg6 17 .ig3 l:td8 18 0-0 'i'c5 19 ~h1 ltJxe5 20 ..txe5 'i'xe5 + Valenzuela-Vera, Elista OL 1998) 16... ltJf5 17 .ixf5 .ixf5 +. 14 cxd4 'i'xa3 15 0-0 'i'b4!? Or: a) 15 ... l:te8 is the only move that Black has so far used in practice: a1) 16 .ib1ltJ5b6 (16...'i'b4 17 'i'd3 ltJf8, Rogers-Smagin, Prague 1992, 18 e4ltJf4 19 'i'e3ltJ8g6 20 ..tg3ltJh5 21 e5 .ie6 +) 17 e4ltJf8 (Frosch-Rabiega, Graz 1997) 18 ..td3ltJg6 19 ..tg3 'fIie7

+. a2) 16 e4ltJf4 17 ..tc2ltJg6 18 .l:.a1 'i'f8 19 ..tg3 ltJf6 20 ltJe5 (20 l:tfe1 ltJh5 21 ltJe5 ltJxg3 22 ltJxg6 fxg6 23 hxg3 ..te6 + Pelletier-Fridman, Essen 2001) 20 ... ltJxe5 21 .ixe5 'fIie7 22 'fIic3 (22 l:tfb1 .l:.d8 23 'fIid3 a5 24 ..tf4 'i'xe4 25 'fIixe4 ltJxe4 26 ..txe4 .l:.xd4 with compensation) 22 ...ltJd7 23 .if4 with compensation. b) The simple 15 ... ltJ7b6!?, after which we do not see full compensation, also deserves attention; for example,

16l:tfe1 (16e4ltJf417 ..tb1 {17'f1ixf4 'fIixd3 +} 17 ...ltJg6 18 ..tg3 ..te6 +) 16 ...'fIib4 17 'i'a2 ..te6 18 'fIic2 l:tfe8 19 e4ltJf4 20 .inltJg6 21 .ig3 ..tg4 +. 16 'i'c2 a5 17 e4 17 l:ta1 'i'd6 18 ..tg3 'fIie7 19 ..th4 ltJ7f6 20 .l:.fb1 g5 21 .ig3ltJb4 +. 17••.ltJf4 18 l:tbl 'fIia3 19 l:tb3 'i'a4 20 .ig3ltJxd3 21 'i'xd3 b6 Black is slightly better.

D122} 120-0 (D)

B

Now Black can exchange immediately or create the threat of ... e4: D1221: 12•.•exd4 78 D1222: 12.•.l:.e8 79

D1221} 12••.exd4 13 exd4 ltJ7f6 There are two interesting alternatives: a) 13 ...ltJ7b6!? 14 ..tb1 ltJxc3 15 bxc3..ta3 16 l:tce1 (Vshivkov-Kozlov, Perm 1997) 16... f5 17 ltJe5 ltJd5 18 ltJg6 'i'xc3 19 'fIidl ..td7 20 ltJxf8 l:.xf8 with compensation. b) 13 ... l:te8 and then: b1) 14 'i'c2 -1O... e5 11 0-0 l:te812 'iVc2 h613 ..th4 exd4 14 exd4.

7 cxd5 tbxd5 8 'fid2 iLb4 b2) 14 a3 SLxc3 IS bxc3 'iVxa3 (or lS .. .liJf8 16 ttJeS, Guliev-Shabanov, Moscow 1995, 16... ttJb6 17 'iVb2 SLe6 18 SLg3 f6 19 ttJf3 ;!;) 16 .l:r.fel l:.xel+ 17 .l:r.xe 1 bS 18 c4 bxc4 19 .l:r.e8+ ttJf8 20 SLxc4 SLb7 and White does not have full compensation for the pawn. b3) 14 SLbl has been defused by Smagin: 14 ...ttJf8 IS liJeS (IS SLg3 SLe6 16 'iVd3 .l:r.ad8, Lemer-Rabiega, Bad Worishofen 1997, 17 .l:r.fe 1 l:.d7 18 liJeS .l:r.de7 with a good game for Black) IS ... SLe6 and now: b31) 16 'iVc2liJe7 (Conquest-Smagin, Hastings Masters 1990) 17 a3!? i.d6 18 'iVe2 liJfS 19 SLxfS SLxfS is slightly better for Black. b32) 16 'iVd3 f6 (16 ... liJf4 17 'iVf3 liJ4g6 18 SLg3 liJxeS 19 SLxeS f6 20 SLf4 .l:r.ad8 = Uhlmann-Smagin, Dortmund 1991) 17liJg6 (17liJc4liJf4 18 liJxaS liJxd3 19 i.xd3 SLxaS is also slightly better for Black) 17 ... SLd6 18 liJxf8 Wxf8 ,+. b33) 16 l:tfel cS (Oll-Smagin, Copenhagen 1993) 17 dxcSliJxc3 18 bxc3 SLxcS '+ ECO. b4) 14 .l:r.fel!? .l:r.xel + IS .l:r.xelliJf8 (1S ... liJ7f6 16 .l:r.eS 'ili'd8 {16 ... bS 17 SLxf6 liJxf6 18 a3 SLxc3 19 'iVxc3 ~xc3 20 bxc3 a6 21 l:tcs ;!;} 17 a3 SLxc3 18 bxc3 SLg4 19 liJel bS 20 c4 bxc4 21 SLxc4 ;!;) 16 .l:r.e8 f6 17 SLfS liJb6 18 SLxc8 l:.xc8 19 .l:r.xc8 liJxc8 and White has a slightly more active position. 14 SLbl 14 a3 SLxc3 IS bxc3 (Shocron-Corte, Buenos Aires 19S1) IS ... liJhS!? 16liJeS ~xa3 17 'iVdl liJhf6 18 c4 liJb4 19 SLxf6 gxf6 20 "fif3 liJxd3 21 liJxd3 with compensation. 14•••.l:r.e8

79

14 ... SLe6 IS 'iVc2!? (1SliJeS SLe7 16 .l:r.fel l:.fe8 17 a3 l:.ac8 18 'iVd3 liJf4 = Najdorf-Shocron, Buenos Aires 19S3) IS ... g6 16liJeS SLfS 17 'iVb3 ;!;. 15 'i'c2 g6 16 liJeS SLfS 17 'ii'b3 SLe6 The position is level. Note that Black must avoid 17 ... SLxb I? 18 SLxf6! ±.

D1222} 12.•• l:.e8 (D)

Now White must respond to the ... e4 idea, and there isn't any completely ideal way for him to do so. 13e4 Or: a) 13 'i'c2!?-1O... e511 O-Ol:.e812 'ii'c2 h6 13 SLh4. b) 13 dxeS liJxc3 14 bxc3 SLa3 IS .l:r.blliJxeS 16liJxeS 'i'xeS 17 l:.b3 .JtcS 18 l:tel b6 19 c4 .Jte6 = PommierLacrosse, Massy 1993. 13.••liJf4 Or: a) 13 ... liJxc3 14 bxc3 .Jta3 IS .l:r.bl exd4 16 cxd4 'i'xd2 17 liJxd2liJb6 18 f4 ;!; Aubel-De Graaff, Hengelo 2000. b) 13 ... exd4 (Lebedev-Chistiakov, Moscow 1934) 14 exdS dxc3 IS bxc3 SLf8 16 dxc6 liJcs 17 cxb7 .Jtxb7 18

80

THE CAMBRIDGE SPRINGS

~c4 ~xf3 19 gxf3 ~e7 20 'iff4ltJe6 21 ~xe6 fxe6 22 ~xe7 l:xe7;t.

14 .i.bl (D) 14 .i.c4ltJg6 15 a3ltJxh4 (the alternative 15 ....i.xc3!? 16 l:xc3 exd4 17 'ifxd4 'ilVb6 gives Black a good game) 16 ltJxh4 (C.Torre-Slirnisch, Marienbad 1925) 16... .i.xc3 17 l:txc3ltJf618 dxe5 'ifxe5 =.

B

B

Pachman-Erdelyi, Trencianske Teplice 1949) 15 ...h616.i.h4 (Fronczek-Neese, Potsdam 1997) 16... ~xd3 17 'ii'xd3 c5

=

14.••exd4!? 14... ltJg615 .i.g3 exd4 (15 ... ltJb6 16 a3 .i.f8 17 .i.a2 .i.e6 18 .i.xe6 l:xe6 ;t Gligoric-Shocron, Mar del Plata 1953) 16 'ilVxd4 (16 ltJxd4 - 14... exd4!? 15 ltJxd4ltJg6 16 .i.g3) 16 ... ltJdf8 17 a3 .i.e718 'ilVe3 'ifh5 19 .i.d3 .i.c5 20'ilVd2 .i.g4 =. 15 ltJxd4 ltJg6 16 ~g3 ltJf6 Black has a good game.

02) 10 e4!? Given that the quieter Line D 1 offers White little, this deserves very close attention. 10...ltJxc311 bxc3 .i.a3 12 l:tbl (D) 12...e5 Or 12... b6 13 ~d3 ~a6 14 0-0 l:tfe8 15 e5 (15 l:fd1 ~xd3 16 'ilVxd3 ~f8 17 ~d2 l:ed8 18 'iVc2 l:tac8 19 c4 ;t

13~d3l:e8

A bit worse are: a) 13 .. .f6 14 ~3 l:te8 (14 ... ltJb6, Mikenas-Keres, Warsaw OL 1935, 15 dxe5 fxe5 16 c4 'ii'xd2+ 17 'itxd2ltJd7 18 l:hd1 ±) 150-0 ltJb6 16 dxe5 fxe5 17ltJg5;t Szabo-Pfaffel, Balatonbereny 1995. b) 13....i.d6 140-0 f615 ~e3 (Spielmann-Pirc, Moscow 1935) 15 ...ltJb6 16 :fd 1 exd4 17 ltJxd4 l:td8 18 'ilVc2 gives White a slight advantage . c) 13 ... exd4 14 cxd4 'ilVxd2+ 15 ltJxd2ltJb6 (15 ... :e8, Toloza-Montero Martinez, Santiago 1997, 16 :b3!?;t) and then: c1) 16 ltJc4 ltJxc4 17 ~xc4 l:te8 (17 ...h6 18 .i.e3 l:te8 19 f3 ;t Kan-Levenfish, Leningrad 1934) 18 f3 b5 19 ~b3 a5 is equal, Trifunovic-Bergqvist, Dubrovnik OL 1950. c2) 16 0-0 ~e6 17 ~c2!? l:fe8 18 .i.b3 h6 19 .i.e3 l:tad8 (19 ... .i.b4 20 .i.xe6 .i.xd2 21 ~b3 .i.xe3 22 fxe3 l:te7 23 a4 l:td8 24 a5 ;t) 20 .i.xe6 l:xe6 21 l:tb3 ~e7 22 l:.fb1 ~f6 23 l:td3 l:ted6 24 ltJf3 ;t.

7 cxd5 CiJxd5 8 'fid2 i.b4 140-0 14 i.e3 i.d6 15 0-0 (Stohl-Ani<.\ Pula 1999) 15 ... exd4 16 cxd4 'iVxd2 17 i.xd2 t. 14.••i.d6 Or: a) 14... exd415 cxd4 'iVxd216 i.xd2 (Longobuco-Benitez, Uruguay 1961) 16 .. .'~Jb617 i.a5 i.d618 :fc1 i.c7 19 h3 t. b) 14 ... b6 15 'ii'e2 i.b7 (HylenHultquist,corr.1973) 16:fdl tEuwe. c) 14... 'ii'c7 15 i.h4 i.d6 16 :fel c5 17 i.b5 exd4 18 cxd4 (Vark-Frenklakh, Zagan girls Wch 1997) 18 ... a6!?

t. 15 l:tfdl 15 i.h4 a6 16 i.g3 i.b8 17 'ii'c2 b5 18 :tal (18 :bdl c5 with a good game for Black, Garcia Vera-Sanguinetti, Mar del Plata 1946) 18 ... c5 19 a4 t. IS •.•h6 (D) No better is 15 ... lLlf8 16 h3 'ii'c7 17 'ili'e2 b6 (Laube-Lohwasser, corr. 1976) 18 i.e3 lLlg6 19 'ii'c2 i.d7 20 i.c4 ;t.

81

16 i.h4exd4 16...b6 17 'ii'c2lLlf8 18lLlxe5 i.xe5 19 dxe5 'ii'xe5 20 i.g3 ;t RheinheimerLohwasser, corr. 1982. 17 cxd4 'iixd218lLlxd2lLlb61geS White has slightly better chances in the ending. Line C21 ends in a very effective perpetual check, but in Lines C22 and D2 Black has some problems with full equality. Overall, we prefer 8... lLl7b6 to 8 ... i.h4.

6 7 ttJd2: Introduction and Minor Lines 1 d4 d5 2 c4 e6 3 liJc3 liJf6 4 ..tg5 liJbd75 e3 c6 6liJf3 'iVa5 7liJd2 (D)

B

Nowadays 7 liJd2 is the most popular move. White avoids a pawn sacrifice while unpinning the c3-knight and so lessening the impact of ... liJe4. At the same time after ... dxc4 he is ready to reply liJxc4, attacking Black's queen and placing his knight on an active post. Moreover, White usually has a space advantage. However, there are some weak points of this continuation. This is the second move with the same piece. It leaves the g5-bishop undefended (so after ... dxc4 White has to exchange his bishop) and lessens White's control of the e5-square - in some lines Black can achieve counterplay by ... e5. In many cases, even if White obtains a small advantage, it is very difficult for him to make

any progress, as Black's position has no weaknesses. White must also count (especially if he decides to play e4 or e5) with the possible pawn-break ... c5 or in some lines ... e5 or ... a5, while opening the position might give Black excellent play. Contrary to current chess fashion, we recommend 7 ... dxc4 (Chapter 7) rather than 7 ... i.b4 (Chapters 8 and 9) as in our opinion Black can equalize only with the former. The current chapter deals with all other options for Black on move 7. Let's look at some typical strategic and tactical ideas:

B

Black has a typical position: slightly cramped but solid and without weaknesses. After 17 ... a5 Black obtained counterplay in Schone-Chekhov, Germany 1995.

7 tiJd2: INTRODUCTION AND MINOR LINES

83

a) 7... eS 8 i.xf6 ltJxf6 9 ltJb3 'fIc7 10 cxdSltJxdS IlltJxdS cxdS 12 i.bS+ ± Knorich-Bochler, corr. 1983. b) 7... h68 i.h4 (8 i.f4 i.e7 9 i.d3 0-0 10 0-0 J:te8 11 a3 ;l; Fabrega-Goncalves, Buenos Aires 1993) 8... i.b4 9 'ii'c2 gS (9 ... 0-0 10 i.d3 i.e7 11 0-0 'ii'd8 12 f4 ;l; Hendler-Frohlich, Bad Zwesten 1998; 9 ...ltJe4 10 i.xc3 11 bxc3ltJxd2, 1/2_ 1/2 Kopriva-Rehorek, Bmo 1999, 12'f1xd2;l;) 1Oi.g3ltJhSll i.e2 ltJxg3 12 hxg3 ltJf6 13 a3 i.xc3 14 'fIxc3 'fIxc3 IS bxc3 ;l; IonescuYang Xian, Dubai OL 1986. c) 7... i.d6 8 'fIc2 (8 cS i.e7 9 f4 'ii'c7 10 i.d3 b6 11 b4 as = ZaricMilin, Yugoslavia 1994; 8 0-0 9 i.e2 :e8 10 0-0, S.Femandez-Sheeres, corr. 1996, 1O... 'fIc7 11 f4;l;; 8 i.e2 0-0 9 0-0 'fIc7 10 ltJf3 ltJe4 11 .th4 ltJxc3 12 bxc3 dxc4 13 i.xc4 cS with counterplay) 8...0-09 i.e2 :e8 10 0-0 eS 11 cxdS cxdS 12ltJbS i.b8 13 dxeS ;l;.

:c1

After IS 'ii'xe4 i.fS 16 'ii'd4 (16 'fIxfS?? ltJf3+ -+) 16...:ad8 White has to give up his queen, Kharitonov-Shabanov, Kursk 1987.

:c1

A)

7•••i.e7 (D)

13 ltJxe4! fxe4 14 a3 .td6 IS b4 and White wins a piece with a clear advantage, Gotthilf-I.Rabinovich, Leningrad 1925. 1 d4 d5 2 c4 e6 3 ltJc3 ltJf6 4 i.g5 ltJbd7 5 e3 c6 6ltJf3 'fIa5 7ltJd2 In this chapter we discuss a number of minor options for Black: 83 A: 7 •••i.e7 B: 7 •.•ltJe4 84

Even less popular are:

This is not a logical follow-up to

... 'fIaS. 8i.e2 Other moves:

84

THE CAMBRIDGE SPRINGS

a) 8 cxd5 liJxd5 (8 ... exd5 - 7 cxd5 exd5 8 liJd2 ..te7) 9 ..txe7 liJxe7 10 liJc4 "fIic7 (Kanovsky-Slavicek, Svetla nad Sazavou 1999) 11 :cl!?;!;. b) 8 ..td3 0-0 (8 ... dxc4, PitonakMynar, Bratislava 1997, 9 ..txf6 cxd3 10 ..txe7 r:i;;xe7 l1liJc4 "fIif5 12 e4 "fIig5 13 0-0 ;!;) 9 0-0 (9 "fIic2 ':'e8 10 f4 h6 11 ..txf6liJxf6 120-0, Caro-Slujssar, Caracas 1970, 12 ..."fIic7 =) 9 ... a6 10 e4 (10 ..tf4!?;!;) 10... dxc4 11 ..txf6 (Keessen-Brouwers, Dutch jr Ch 1997) ll...liJxf6 12liJxc4 "fIid8 13 e5liJd5 =. c) 8 :cl and then: el) 8... 0-09 cxd5 (9 ..te2 dxc4 10 ..txf6..txf6 l1liJxc4 "fIid8 120-0 liJb6 13 liJe4 liJxc4 14 liJxf6+ "fIixf6 15 ..txc4 112-112 Trojacek-Golubovic, Hradec Kralove 1992) 9 ... exd5 10 ..td3 "fIic7 (1O ... ..td6!?) 11 ..tf4;!; SchusterReinhold, Germany 1991. c2) 8... dxc49 ..txf6liJxf6 10 liJxc4 "fIig5 11 "fIif3 "fIif5 12 'ii'g3 0-0 =. d) 8liJb3 "fIic7 (8 ..."fIid8 9 cxd5 exd5 10 ..td3 0-0 11 0-0 ':'e8 12':'c 1 liJf8 ;!; Dancs-Puhl, Hungarian Ch 1991) 9 :c 1 0-0 10 cxd5 exd5 11 ..td3 (Ho Van Huynh-Kuo Tso Chi, Moscow OL 1994) 1l.....td6 =. e) 8 'ii'c2 a6 9 ..te2 dxc4 10 ..txf6 liJxf6 l1liJxc4 "fIic7 120-0 c5 (alternatively, 12 ... liJd5 13 ..tf3 ;!; HovmollerHe.Nielsen, Copenhagen 200 1) 13 dxc5 'ii'xc5 ;!; 112-112 Videki-T.Bauer, Szekszard 1993. f) 8 a3 0-0 9 b4 'ii'd8 (PotapovMouroutis, Nikea 2001) 10 ..te2!?;!;. g) 8 ..txf6 liJxf6 transposes to Line Fl of Chapter 2. 8...dxc4 8... 0-09 0-0 :e8 and then: a) 10 cxd5 liJxd5 11 ..txe7 was played in N.Schmidt-Hanjes, Germany

1990, and now 1l...':'xe7 12 liJc4 'ii'c7 13 "fIic2 is just slightly better for White. b) 10 ':'el (Tjiam-Priesner, Hamburg 1987) 10... dxc4 11 ..txf6liJxf6 12 liJxc4 ii'd8 13 "fIic2 ;!;. c) 10 a3 dxc4 (1O ... liJf8 11 b4 'ii'd8 12 c5 b6 13 'ii'a4 ;!;) 11 ..txf6 liJxf6 12 liJxc4 'ii'c7 13 :cl ;!; Hasan-Konchi, Varna OL 1962. 9 ..txf6 ..txf6 9 ... liJxf6!? 10 liJxc4 "fIic7 11 :c1 0-0 12 0-0 :d8 13 'ii'c2 (D)

B

Although White has a small advantage, it is difficult to make any progress, because Black's position has no weaknesses. Two games ended in quick draws: 13 ... liJb6 (13 ... b6 14 liJd2 {14 ':'fdl !?} 14... ..tb7 15 b4 e5 16 liJde4 'ii'b8 17 ..tc4 a5 112-112 BornemannSchulte, Dortmund 1989) 14liJe4 ..te7 15 f4 (15 :fdl !?) 15 ... liJd5 16 :f3 ..td7 17 liJe5 f6 18 liJxd7 "fIixd7 19 a3 f5 112-112 Weglarz-Zoltek, Mikolajki tt 1991. B)

7 ...liJe4 Black immediately plays one of the thematic Cambridge Springs moves,

7 tDd2: INTRODUCTION AND MINOR LINES though one can argue that Black should not rush with such a committal move. SlLIdxe4 Or: a) 8 cxdS - 7 cxd5lL1e4 8lL1d2. b) A good alternative is 8 lLIcxe4 dxe4 9 SLh4 eS (9 ... ~b4 10 a3 ~xd2+ 11 ~xd2 ~xd2+ 12 ~xd2 eS {12 ... cS 13 SLe2 ± W.Schmidt-Pinkas, Polish Ch 1987} 13 ~c3 ± Schlechter-Teichmann, Cambridge Springs 1904) 10 a3 (10 SLe2, Annakov-Ramazan, Moscow 1997, 10 ... exd4 11 exd4 gS 12 SLg3 fS +) 1O... exd411 exd4 gS!? (l1...fS 12 cS g6, Svenn-Hector, Linkoping 1984, 13 "iVb3 SLe7 14 SLxe7 ~xe7 IS 0-0-0 lLIf6 16 ~g3 'ii'd8 17 'ii'eS+ is much better for White) 12 ~g3 SLg7 13 'ii'e2 0-014 0-0-0 fS IS ~d6 l:.e8 16 cS 'ii'd8 17 h4 ;t. S•.•dxe4 (D)

Now White must choose a square for his bishop: Bl: 9 SLf4 8S B2: 9 SLh4 88 As we shall see, the latter is preferable. B1) 9SLf4

85

Here the bishop exerts influence over the eS-square. On the other hand, the ... eS advance will now pack more of a punch than if it didn't hit the bishop. Here: Bll: 9•..SLb4 8S B12: 9...e5! 88

Bll) 9••. SLb4 (D)

This move is a logical follow-up to 7... lLIe4, which removed one of White's knights from the el-aS diagonal. 10 'ii'c2 Or: a) 10 ~b3 eS 11 dxeS? lLIcs 12 ii'c2 ~fS 13 ~e2 lLId3+ 14 'it>f1?! 0-0-0 IS l:dl SLxc3 (ls ... lLIxb2!?) 16 'ii'xc3 'ii'xa2 17 g4 ~e6 18 b3 lLIcs -+ Platonov-Vaganian, Leningrad 1971. b) 10 'ii'c1 eS (1O .. .fS, Matras-Dolezal, Klatovy 1995, 11 ~g3 eS 12 a3 ~e7 13 b4;t) 11 i.g3 0-012 a3 ~xc3+ 13 'ii'xc3 'ii'xc3+ 14 bxc3 fS IS cS (Sammalvuo-Haanpaa, 1999; IS dS!?) IS ... gS intending ... f4 =. 10.••0-0 Other moves: a) 1O... h6 11 SLg3 (11 SLe2, Reinhold-Langner, Germany 1991, 11...eS

86

THE CAMBRIDGE SPRINGS

12 i.g3 f5 13 :dl 0-0 14 dxe5 lbxe5 15 0-0 i.xc3 16 bxc3 ;t) l1...e5 12 a3 i.xc3+ 13 'ii'xc3 'ii'xc3+ 14 bxc3 rJ;;e7 15 i.e2;t. b) 1O... h5 11 h3 (11 h4 e5!? {11...f5 12 a3 i.xc3+ 13 'iixc3 'iixc3+ 14 bxc3 ;t Braun-Barabas, Misko1c 1998} 12 i.g3 0-0 13 a3 exd4 14 exd4 lbf6 15 i.e2 :e8 ;t) l1...e5 12 i.h2 i.xc3+ 13 "xc3 'ii'xc3+ 14 bxc3 rJ;;e7 15 i.e2 intending f3 ;to c) 1O... e5 11 i.g3 0-0 (D) and now:

c1) 12 i.e2 and then: cll) 12... exd4 13 exd4 f5 14 i.f4 (14 h3 f4 gives Black a slight advantage, Knudsen-Covington, corr. 1994) 14 ... lbb6 (14 ... lbf6 15 0-0 ;t Endresen-Sandum, Stjerdal 1985; 14... i.e7, Vera-Inkiov, Rome 1985, 15 0-0 lbf6 16 :adl ;t) 15 a3 i.e6 16 :bl i.xc3+ c12) 12... f5 and here: c121) 13 f4 exf3 14 i.xf3 f4 15 i.f2 fxe3 (15 ... exd4 16 exd4 is much better for Black, Almeda-Cherta, Mollet 1935) 16 i.xe3 (Van der LindenMrndzic, Sork 1999) 16... lbb6 =t. c122) 13 dxe5lbxe5 and now: c1221) 14 'ii'b3 was tried in Londers-R.Pert, Glomey Cup 1997, and

now 14... lbd3+ 15 i.xd3 exd3 gives Black a slight advantage. c1222) 14 a3 i.xc3+ 15 "xc3 'ii'xc3+ 16 bxc3 lbd3+ 17 i.xd3 exd3 18 ~d2 i.e6 =+= (with opposite-coloured bishops) Rother-Soe1ch, Germany 1985. c1223) 14 0-0 (Ross-Motemedi, 1985) 14... i.xc3 15 bxc3 i.e6 16 'ii'b3 b6=+=. c123) 13 c5 f4 14 i.h4 (PhilippeBergraser, Varna OL 1962) 14... fxe3!? 15 fxe3 exd4 16 exd4 b6 =. c2) 12 a3 f5 (12 ... exd4 13 exd4 :e8 14 i.e2 lbf6 15 0-0 i.f8, SchneiderKiselev, St Petersburg 1992, 16 i.e5 ;t) 13 0-0-0 i.xc3 14 "xc3 'iixc3+ 15 bxc3 (Gyorkos-Janosevic, Biel 1981) 15 .. .f4 16 i.h4 fxe3 17 fxe3 exd4 18 cxd4 lbb6 19 c5 lbd5 20 i.c4 i.e6 21 :dfl ;to d) 1O... f5!? 11 i.e2 (Soto-Boettner, Buenos Aires OL 1939) l1...e5!? 12 dxe5lbxe5 130-0 i.xc3 14 'ii'xc3 (14 bxc3 i.e615 "b3 0-0-016 lIabl b6 =) 14 .....xc3 15 bxc3 lbg6 16 i.g3 i.e6 11 i.e2 Instead: a) 11 f3 e5 12 i.g3 (12 dxe5lbxe5 13 i.xe5 {13 fxe4!?} 13 .....xe5 14 f4, Cichy-Hamann, 2nd Bundesliga 1983, 14 ... i.xc3+ 15 'ii'xc3 'ii'xc3+ 16 bxc3 i.e6 =t) 12... exf3 13 gxf3 exd4 14 exd4 :e8+ 15 ~f2 'iih5 =+=. b) 11 0-0-0 (Maksimovic-Kubanek, Prague 1930) 1l...i.xc3 12 'iixc3 'ii'xa2 13 'ii'a3 'iixa3 14 bxa3lbf6 15 f3 with compensation. c) 11 a3!? deserves attention and needs to be tested in practice; e.g., 11...i.xc3+ 12 'ii'xc3 'iixc3+ 13 bxc3 e5 14 dxe5 lbc5 (14 ... lbb6 15 0-0-0 i.e6 16 :d4 c5 17 :d6 :ab8 18 i.e2

7 tl:.d2: INTRODUCTION AND MINOR LINES

t:; 14...:te8 IS 0-0-0 t:) IS 0-0-0 i..fS 16 l::td6 t:. 1l •..eS 11...:te8 120-0 (12 a3 !?) 12 ... eS 13 i..g3 (Duz-Khotimirsky - Selezniev, USSR 1924) 13 ... exd414 exd4lbf61S i..h4 'ir'fS 16 :fel 'ir'g6 =. 12 dxeS lbxeS (D) 12 ...:te8 13 e6 :txe6 = Smyrek1anke, 1edesheim 1991.

87

a3) 16 cSlbd7 17 i..d6 b6 18 cxb6 axb6 (Ed.Lasker-Em.Lasker, New York 1924) 19 l::tfbl :ta7 20 .l:.b2 i..a6 21 c4 with slightly better play for White. a4) 16.l:.fdl i..fS (16 ...lbg617 i.d6 b6 18 cS t: Loffler-Wronn, Porz 1990) 17 l::tabl (17 :td4 h6 with good play for Black, 1uszczak-Matras, Straszecin jr Cht 1999) 17 ... b6 18 cS (18 :td6, Van Gelder-Yachyshin, Bmo blind Wch 1998, 18 ... lbd3 +) 18 ... bxcS 19 i.xeS :txeS 20 i..c4 ~f8 21 h3 with compensation. b) IS ... lbd3 16 i.d6 :te8 17 cS b6 leads to equality, Lehtivaara-Haanpaa, Salo 1993.

B

130-0 Or: a) 13 a3 i..xc3+ 14 bxc3 i..e6 is slightly better for Black, Skok-Brumen, Ljubljana 1999. b) 13 l::tcllbd3+ 14 i..xd3 exd3 IS 'iVxd3 i..fS Michell-Menchik, Hastings 1931/2. c) 13 i..xeS 'ir'xeS 14 0-0-0 (Sandum-Odde, Kristianssund 1984; 14 .l:.cl i..e6 Vida-Ronga, Balatonbereny 1997) 14 ...:e8 IS a3 i..aS 16 l::td4 fS 13...i..xc314 bxc3 (D) Or 14 'ili'xc3 'iVxc3 IS bxc3: a) IS ... .l:.e8 and then: al) 16 l::tabl b6 17 cS bxcS Magyar-Majdanics, Hungary 1995. a2) 16 i..xeS l::txeS 17 l::tfdl ~f8 18 l::td8+ l::te8 +Sandum-Strand, Kristianssund 1983.

+

+

+.

+

14...i..fS (D) Alekhine gave this as slightly better for Black. Other moves are worse: a) 14 .. .fS IS :tfdl (15 :tadli.e6 16 l::td4 lbf7 {16 ... l::tae8 17 :tfdl t: Mertens-Thier, 1992} 17 l::tbl b6 is equal) IS ...'ir'cs (Richard-Westphal, Aachen jr 1982) 16 'ili'b3!? t:. b) 14 ... l::te8 and then: bl) IS :tad 1 i..fS 16 :td4 was played in Kraidman-Aitken, Tel-Aviv OL 1964, 16 ... lbd3!? +. b2) IS l::tabl b6 16 'iVxe4 (16 :tfdl, Basto Lima-Mangini, Fortaleza 19S1,

88

THE CAMBRIDGE SPRINGS

16...ttJd3! =+=) 16... i.f5 17 'ii'xf5 ttJf3+ 18 i.xf3'ii'xf5 19 i.xc6'ii'd3 =t. b3) 15 %:tfdl i.e6 16'ii'xe4 (16 %:td4 c5, Geronimus-Winter, Aberdeen 1939, 17 i.xe5 cxd4 18 cxd4 %:tac8 19'ii'xe4 i.xc4 =t) 16... i.f5 17 'ii'd4 %:tad8 18 i.xe5 %:txd4 19 cxd4 with compensation. b4) 15'ii'xe4 i.f5 16'ii'd4 %:tad8 17 i.xe5 %:txd4 18 cxd4 and White has compensation after 18 ... 'ii'd2 19 i.f3 (Kharitonov-Shabanov, Kursk 1987), 18 ... 'ii'a3 19 %:tfel (Bu Xiangzhi-Bruzon, Lausanne 2001) and 18 ... c5 19 i.f3 (Wellenreich-Pramann, Germany 1993).

15'ii'b3 Worse are: a) 15 l:tabl b6 16 i.xe5 'ii'xe5 17 .:tfdl .:tfd8 =t. b) 15 l:ttbl b6 16 i.xe5 'ii'xe5 17 %:tdl %:tfd8 is also slightly better for Black. 15•.• b616'ii'b4'ii'xb417 cxb4 ttJd3 18 i.xd3 exd3 19 l:tfdl %:tfd8 White can reckon on equality due to the opposite-coloured bishops.

812) 9...e5! (D)

This energetic approach turns out to be most successful. 10dxe5 i.b4 1O... ttJxe5 is bad: a) 11 'ii'd4 f6 12 i.xe5 (12 'iixe4? i.f5 13 'ii'd4 %:td8 -+) 12... fxe5 13 'iixe4 i.b4 is equal according to I.Zaitsev but we think White is slightly better; e.g., 14'ii'c2 i.xc3+ (14 ... 0-015 i.d3, Compagnie-Boll, Arnhem 1976, 15 ... i.xc3+ 16 bxc3 t) 15 'iixc3 (15 bxc3 i.f5!) 15 ...'ii'xc3+ 16 bxc3 t. b) 11 a3!? (intending b4) ll...ttJg6 12 b4 'ii'f5 13 i.d6 a5 14 b5 is much better for White. 11 'iib3 Or 11 'iic2ltJxe5 120-0-0 (12 i.e2 i.f5 13 0-0 i.xc3 14 bxc3 0-0 =+= Rotlewi-Jaffe, Karlsbad 1911; 12 %:tcl i.f5 13 a3 i.d6 14 'ii'd2 {14 i.g3, AlzaimKromhout, Istanbul OL 2000, and now 14... 0-0-0!? =+=} 14 ... i.c7 =+= KelecevicGereben, Basle 1986) 12... i.xc3 13 bxc3 f5 14 1Ifb3 i.e6 =t Leenhouts-Tan, Leiden 1998. 11...ltJc5 12 'ii'c2 i.e6 13 i.e2 'ii'a6 14 0-0-0 i.xc3 15'ii'xc3 'ii'xa2 Black has a good game.

82) 9 i.h4 (D)

7 C£Jd2: INTRODUCTION AND MINOR LINES This retreat is more successful, as the bishop remains on an important diagonal, and the ... e5 thrust can be largely ignored.

B

9.....tb4 Or 9 ... e5 10 a3 (10 ..te2, Bum-Forgacs, Ostend 1906, 10.....tb4 11 'ii'c2 f5 120-0 exd4 13 exd40-0 14 :tfdl t) 1O... exd4 11 b4 (11 'iixd4 f5 12 ..te2 ~e5 13 l%.dl ..te7 14 ..txe7 <Ji;xe7 t

89

Sulik-Pirc, Lodz 1938) 11...'ii'c7 12 exd4 f5 13 c5 t Wijnand-Eleveld, COIT. 1986. 10 'iVb3 c5 No better is 10... 0-0 11 ..te2 e5 12 0-0..txc3 13 'iVxc3 'iVxc3 14 bxc3 f5 (14 .. .lle8 15 :tfdl exd4 16 cxd4 ttJb6 17 :tabl ± Tuominen-Linqvist, Naantali 1998) 15 f3 exf3 16 ':xf3 (16 gxf3!?) 16 ... e417 :tffl tWeber-Klein, Bad Dtirkheim 1993. 11 a3!? 11 0-0-0 ..txc3 12 bxc3 0-0 13 ':d2 e5 = Thorbergsson-Ibrahimoglu, Havana OL 1966. 11•••cxd4 12 exd4 ..txc3+ 13 'ii'xc3 'iixc3+ 14 bxc3 White has a small advantage. In conclusion, none of the 7th move options for Black discussed in this chapter are entirely satisfactory from a theoretical viewpoint.

7 7 tbd2 dxc4 1 d4 d5 2 c4 e6 3 liJc3 liJf6 4 J.g5 liJbd7 5 e3 c6 6liJf3 'i!i'a5 7liJd2 dxc4 (D)

bl) 10 liJe4 J.b4+ 11 liJcd2 'tig6 (Dziggel-Koehler, Hessen 1997) 12 'i!i'b3!? as 13 a3 J.e714l:.dl fSlSliJc3

t.

w

This is a simple and unassuming approach. Black gains the bishop-pair and a solid position. In return, White is granted a spatial plus and a central majority. 8 J.xf6 Worse are: a) 8 J.f4 (Stmisko-Werner, w.Germany jr tt 1989) 8 ... bS!? 9 a4 'i!i'b4 10 'i!i'c2 liJdS 11 J.g3 hS 12 h4 J.b7 13 J.e2 a6 with a good game for Black. b) 8 J.h4 bS 9 a4 'i!i'b6 10 J.e2 J.b4 11 0-0 J.b7 Staudte-Rheinheimer, Gruenheide 1997. 8.•.liJxf6 8 ... gxf6 is inferior. 9liJxc4 and now: a) 9 .. :iVd8 10 J.e2 bS l1liJd2 b4 12 liJa4 .!:tg8 13 0-0 fS 14 'iVc2 is much better for White, J.Johansson-M.Berg, Stockholm 1992. b) 9.. :ii'gS and then:

+

b2) 10 f4 'i!i'g6 11 'i!i'd2 (11 'tif3 liJb6, Swiderski-Marco, Coburg 1904, 120-0-0.!:tg8 13 .!:td2 liJxc4 14 J.xc4 J.d7 IS g3 t) ll...liJb6 12liJxb6 axb6 13 J.d3 fS 140-0 t Bely-Rethy, Budapest 19S0. b3) 10 'tWf3 fS 11 0-0-0 liJb6 12 'tig3 'i!i'xg3 13 hxg3 t BogoljubowRethy, Munich 1941. b4) 10 g3 liJb6 (or 10... hS 11 h4 'i!i'g612J.d3 'i!i'g413 'i!i'xg4hxg414e4 ± Teichmann-Wolf, Ostend 1905) 11 liJxb6 axb6 12 J.g2 J.d7 13 0-0 J.e7 14 'i!i'b3 ± B.Nielsen-Rethy, Munich 1941. c) 9 ... 'i!i'c7 and here: c 1) 10 'i!i'hS bS 11 liJd2fS 12.!:tel t Braga-Carruez Berges, Zaragoza 1993. c2) 10.!:tel a6 (l0 ... liJb6 11 liJd2 fS 12 g3 ± Moiseev-Panov, Moscow 19S0) 11 e4 bS 12 liJe3 J.b7 (SubrtDolezal, Czech Republic 1997) 13 a4!?

t. c3) 10 J.d3 liJb6 (1O .. .fS, VismaraS.Nikolic, Estensi 2001, 11 l:!.cl .!:tg8 12 g3 t) II 'i!i'hS liJxc4 12 J.xc4 fS 13 0-0 t L.Steiner-Rethy, Ujpest 1934. c4) 10 g3 bS (l0 ... liJb6, ContiniCappello, Corsico 1994, l1'iVf3!? J.e7 12 'i!i'g4 J.f8 13 'i!i'h4 fS 14.!:tcl t) II liJd2 (Murzin-Nazarenus, Budapest 1996) 1l...J.b7 12.!:tel a6 13 J.g2 cS 14 0-0 .!:td8 IS liJce4 t.

7 tiJd2 dxc4 We now return to 8... ttJxf6 (D):

Now: A: 9 i.xc4 91 B: 9 ttJxc4 92 The latter seems more consistent with 7 ttJd2, and is the main line. A)

9 i.xc4 The problem with this move is that it is now hard to find a good role for the d2-knight, and that Black can easily play ... e5. 9.•.i.e7 Or: a) 9 ... 'ii'd8 10 0-0 i.d6 11 ttJf3 0-0 (Ruch-Rouillon, Romans 1999) 12 e4

:to b) 9... 'ii'c7 and then: bl) 10 .:tcl i.d7 was played in Zaloudkova-Chmelikova, Brno 1986, and now 11 0-0 i.d6 12 f4 i.e7 13 ttJde4 ttJxe4 14 ttJxe4 is slightly better for White. b2) 100-0 i.e7 11 ttJde4 ttJxe4 12 ttJxe4 0-0 13 'ii'h5 :to c) 9 ... i.d6 and here: cl) 10 f4 (Gilbert-Voskanian, Le Mans 1993) 1O... ttJd511 ttJde4i.e712 1lYd2 f5 13 ttJg3 0-0 14 a3 'ii'd8 =.

91

c2) 10 e4 (Krush-Farhat, St Lorenzo U-12 girls Wch 1995) 1O... e5!? 11 d5 0-012 dxc6 bxc6 13 0-0 .:td8 14 'ii'c2 .:tb8 with good play for Black. c3) 10 0-0 0-0 (10 ...'ii'c7 11 f4 0-0 12 'ii'f3 :t Toth Vano-Dusik, Ruzomberok jr 1996) 11 i.d3 (11 ttJde4!?) ll...e5 12 ttJc4 'ii'c7 13 ttJxd6 'ii'xd6 14 dxe5 'ii'xe5 =. d) 9 ... ttJd5 10 'ii'c2 (10 ttJxd5 exd5 11 i.d3 i.b4 12 a3 i.xd2+ 13 'ii'xd2 'iixd2+ 14 ~xd2 Ih-lh Isijara-Badano, Buenos Aires 1997; 10 .:tcl, Valek-Splosnov, Frydek-Mistek 1997, 1O... ttJxc3 11 .:txc3 i.b4 =) 1O.... i.e7 11 ttJb3 ttJb4 12 'iie4 'ii'f5 13 0-0 'ii'xe4 14 ttJxe4 a5 15 ttJbd2 :to e) 9... 'ii'g5 10 0-0 (Cavagnaro-Saralegui, Chivilcoy 1997; 10 'ii'f3 i.e7 11 'ii'g3 'i'xg3 12 hxg3 = Wong-Sodha, Tor 1997) 1O... i.e7 11 .:tel ttJd5 12 ttJf3 'i'h6 13 ttJe5 0-0 14 'i'c2 :to f) 9 ... i.b4 10 'i'b3 (10 .:tel 0-0 11 0-0 e5 12 ttJde4 ttJxe4 13 ttJxe4 i.f5 14 ttJg3 i.g6 is equal, Innemann-Vesely, Czech tt 1999/00) 10 ... 0-0 11 a3 i.e7 intending ... b6, ... i.b7 and ... c5 =(Neishtadt). 100-0 eS Other moves: a) 10...0-0 and now: al) 11 'iie2 (Karcher-Ktipferle, Germany 1993) ll...e5 12 .:tadl exd4 13 ttJb3 'iie5 with good play for Black. a2) 11 'ii'c2 e5 12 ttJf3 exd4 13 ttJxd4 'i'h5 14 i.e2 'ii'e5 =HenriksenThorhallsson, Gausdal 1994. a3) 11 e4 (Fougy-E.Hussain, Novi Sad OL 1990) l1...e5 12 dxe5 'iixe5 13 ttJf3 'ii'c5 with good play for Black. a4) 11 ttJf3 c5 12 d5 exd5 13 ttJxd5 ttJxd5 14 i.xd5 'i'b6 =Galvez-Goins, 1998.

92

THE CAMBRIDGE SPRINGS

a5) 11 .i.d3 .:tdS 12 .l:.el (12 'ii'c2, Apsheniek-Engels, Buenos Aires OL 1939, 12 ...'ii'h5 13 ttJde4 e5 14 ttJxf6+ i.xf6 =; 12 'ii'e2 'ii'h5 13 ttJf3 .i.d7 14 .:tael is level, Reilly-Seitz, Nice 1930) 12 ... i.d7 13 ttJc4 'ii'c7 14 ttJe5 with a slight advantage for White, FieandtLaine, Finnish Cht 1996/7. b) 1O... .i.d7 11 ttJf3 0-0 12 'ii'c2 (12 ttJe5!? .:tadS 13 'ii'b3 .i.cs 14 .:tfdl .i.d6 =) 12... c5 with good play for Black, Hoffmann-Trumpp, Germany 1994. 11 ttJb3 Or: a) 11 'ii'b3 0-0 12 ttJf3 exd4 13 exd4 .i.d6 with equality, Allison-Gamble, Southend 1995. b) 11 dxe5 'ii'xe5 12 ttJf3 'ii'h5 (Contini-Pasqua, COIT. 1986) 13 ttJd4 'ii'xdl 14.:tfxdl a6 =. c) 11 'ii'e20-0 12 dxe5 'ii'xe5 13 f4 'ii'c7 14 ~hl.:teS = Polushkina-Kieran, Cala Galdana U-14 girls Wch 1996. 11...'iWc7 12 dxeS 'ii'xeS 13 'ii'd4 'ii'xd4 14 ttJxd4 The position is level, Aguilera-Delgado, Puebla Cazalla 1991. B)

9 ttJxc4 (D)

B

Now: Bl: 9...'ii'g5 B2: 9•••'ii'd8 B3: 9•••'ii'c7

92 93 94

B1) 9•••'ii'gS It should not come as a great surprise that this attempt to disrupt White's kingside development is not altogether successful. 10f4 White has some good alternatives: a) 10 'ii'c2 ttJd5 11 e4 (DerieuxChenaux, Montpellier 1991) 11...ttJxc3 12 bxc3 i.e7 13.:tbl c5 14 'fid2 !. b) lO.l:.el h5 11 h4 'fih6 12 i.d3 i.e7 13 'fif3 !. c) 10 a3 .i.e7 (Rull-Rius, Sant Cugat 1997) 11 'fif3!? 0-0 12 i.d3 ttJd5 13 .:tel f5 140-0!. d) 10 h4 (Gerlach-De Souza, Biel worn 1991) 1O ...'ii'f5 11 .i.d3 'ii'g4 12 g3 'fixdl+ 13 .:txdl.i.e714ttJe4ttJxe4 15 i.xe4!. e) 10 ttJe5 ttJd7 11 f4 'ii'h4+ 12 g3 'fih6 13 'ii'f3 .i.e7 14 .i.d3 f5 150-0!. f) 10 'iWf3 ttJd5 (1O ... i.e7 11 .i.d3 0-0 12 0-0 c5 13 dxc5 'iWxc5 14 .:tfdl .:tdS 15 .i.e2 !) 11 ttJe5 f6 (11...'fif6, Simonson-Levenstein, New York 1933, 12 ttJxd5 exd5 13 'ii'xf6 gxf6 14 ttJd3 !) 12 ttJc4 (12 ttJd3 ttJxc3 13 bxc3 'ii'a5 14 ~d2 .i.a3 15 .i.e2 0-0 +) 12... .i.e7 13 i.d3 ttJb4 14 .i.bl 0-0 15 a3 with a slight advantage for White. g) 10 g3 i.b4 11 .i.g2 ttJd5 12 'ii'b3 (12 .:tcl, Meyer-Hanack, Mainz 19S7, 12 ... 0-0 13 'ii'f3 ttJxc3 14 bxc3 .i.e7 =) 12... i.fS (12 ... .i.xc3+ 13 bxc3 'ii'e7 14 e4 ttJc7 15 e5 ±) 13 0-0 'fidS 14 e4 ttJxc3 15 bxc3 .i.e7 !. 10•• JlYg4

7 t'iJd2 dxc4

1O... 'ikh6 11 .te2.tb4 12 0-0 0-0 13 'ikb3 .txc3 14 bxc3 ± Pomar-Pujol Clua, Olot 1973. 11 'ikxg4liJxg4 12 .te2liJf6 13 .tf3 .te7 14 e4 0-0 The pawn-majority in the centre and extra space give White better chances in the ending, Kunsztowicz-Darakorn, Malta worn OL 1980.

B2} 9••.'ikd8 The queen returns home, arguing that the gains made have been worth the two tempi. However, the queen seems a little less effective here than on c7. 10.te2 Other moves: a) 10 e4 (Guerreiro-Ribeiro, Faro 1998) 1O...bS!? 11 eS bxc4 12 exf6 ~xf6 13 .txc4 :b8 14 :bl ~d6 b) 10 'ikf3 ~e7 11 :dl 0-0 (Dacalor-Guichard, France 1999) 12 ~d3 .i.b413 0-0 liJdS 14 :tcl f61S :fdl t. c) 10 'ikc2 .i.e7 11 ~d3ltJd5 (BrkicNovakovic, Vukovar 2001) 12 a3liJxc3 13 bxc3 t. d) 10 .i.d3 and then: dl) 1O....i.e7 110-0 0-0 12 'ikc2 (12 'ike2 b6 13 :tfdl g6 14 :ac1 .i.b7 IS a3 t Berlinsky-Strokov, Moscow 1986; 12 :cl cS 13 dxcS ~xcS 14 a3 t Epding-Freitag, Germany 1999) 12... g6 (12 ...:e8 13 a3 g6 14 b4 t NemetVogel, San Bernardino 1987) 13 :adl liJdS 14 a3 t Roux Cabral-Bauza, Uruguayan Ch 1960. d2) 1O ...b6!? 11 liJeS ~b7 12 :c1 .td6 13 liJf3 (13 liJe4 liJxe4 14 ~xe4 .i.xeS IS dxeS 'ikxdl+ 16:xdl lId817 :c1 <J;e7 =) 13 ... 'ike7 14 'ike2 0-0 IS 0-0 cS =.

+.

93

e) 10 liJeS .i.d6 11 f4liJdS (alternatively, 11...~xeS 12 fxeS liJdS 13 'ikf3 t Cao-Introini, Uruguayan Cht 1983) 12 'ikf3 0-0 13 lIcl f6 14liJc4.i.b4 intending ... eS 00. f) 10 g3 ~e7 (lO ... liJdS 11 .i.g2 ~e7 12 0-0 0-0 13 'ikb3 t H.SteinerKupchik, Pittsburgh 1946) 11 .i.g2 0-0 12 0-0 liJdS (l2 ...:b8 13 a3 liJdS 14 liJe4 t 0gaard-Wibe, Norwegian Ch 1975; 12 ....i.d7 13 'ii'b3 :b8 14 :fdl t Morton-Jaffe, Boston 1938) 13 lIc1 liJb6 t. 10...~e7 Or: a) 1O... g6 11 0-0 .i.g7 12 b4 liJdS (Vollmer-Kloos, Bochum 1991) 13 'ii'b3 0-0 14 :acl t. b) 1O ... cS (Kahn-EzsOl, Budapest 1998) 11 dxcS .i.xcs 12 'ikxd8+ <J;xd8 13 a3 a6 14 0-0-0+ <J;e7 IS ~f3 t. 11 0-0 11 a3 0-0 12 b4 liJdS 13 'ikb3 t Muir-McDonald,Oban 1995 . 11 ...0-0 12 .i.f3 White has a few good alternatives: a) 12 1Ic1 liJdS 13 liJeS ~d6 14 liJe4 t Meyer-Hahner, Potsdam 1997. b) 12 a3 .i.d7 13 b4 'ii'b8 14 'ii'b3 t Etchegaray-Joanovits, Chambery 1994. c) 12 'ii'c2 b6 (12 ... cS, Fors-Nilsson, Sweden 1992, 13 dxcS!? ~xcS 14 :fdl 'ikc7 ISliJe4 t) 13 :abl ~b7 14 b4 t Sundararajan-Himdan, Cairo 2000. d) 12 'ii'b3 b6 (12 ... liJdS 13 :fdl liJxc3 14 bxc3 'ikc7 t Karst-Schneider, Germany 1999) 13 a4 l:.b8 (MichalskiWisniewski, Poraj 1997) 14 as 'ikc7 IS axb6 axb6 t . 12...'ii'c7 No better is the alternative 12 ... ~d7 13 a3 'ikc7 14 b4 t ChiburdanidzeSmagin, Ivano-Frankovsk 1982.

94

THE CAMBRIDGE SPRINGS

13 'iWb3liJd714 l:.fdl White has a small advantage, Arrizabalaga-Parrell Ferrer, 1997. 83) 9••:iic7 (D)

This is the main line. Here the queen supports possible ... eS and ... cS advances. Now: B31: 10 aJ 94 B32: 10 g3 9S B33: 10 l:.c1 98 B34: 10.i.d3 99 B35: 10 .i.e2 102

dxeS 'ii'xeS 14 .id3 .i.e6 IS 'ii'c2 l:.c8 is equal) 13 ... exd4 14 eSliJdS IS 'ii'xd4 (Urday-Longa, Lima 1999) IS ....i.fS gives rise to a complicated position with chances on both sides. b) 10 'ii'c2 .i.e7 and then: bl) 11 a3 0-0 12 b4 b6 13 .ie2 (13 .id3 cS 14 dxcS bxcS IS bS .ib7 16 0-0 l:.fd8 =) 13 ... .i.b7 140-0 (IonescuKilani, Thessaloniki OL 1988) 14 ... cS IS dxcS bxcS 16 bS liJdS intending ....i.f6 =(Vaganian). b2) 11 .i.d3 0-0 (11...h6 12 0-0 .i.d7 13 liJeS liJdS 14 a3 ;!; Wiik-Ludvigsen, corr. 1974) 12 0-0 (12 g4, Bemal-Soppe, Ezeiza 2000, 12 ...h6 13 liJeS liJd7 {13 ... ..td6 14 f4 liJdS IS 'ii'd2 l:.d8 =} 14liJf3 cS IS 0-0 cxd4 16 liJdS'ii'd6 17liJxe7+ 'ii'xe7 =) 12 ...l:.d8 (12 ... g6 13 l:.abl l:.d8 14 b4 b6 IS l:.fc1 ;!;Juszczak-Bursa, Polish girls U-18 Ch 2001) 13liJeS .i.d7 14 l:.ac1 (14liJxd7 l:.xd7 IS liJe4 g6 = Vassaux-Lundin, Buenos Aires OL 1939) 14...h61S l:.fdl l:.ac8 16liJe4 gives White a slight advantage. 831)

Other moves: a) 10 e4 and then: al) 10....i.e7 11 .i.d3 0-0 (11...bS intending ... eS or ... a6 and ... cS gives Black good counterplay) 12 'ii'c2!? (12 0-0 l:.d8 13 eS liJe8 14 l:.el bS with counterplay, Bermudez-Solano Cruz, San Jose 2001) 12... bS 13liJeS .i.d6 14 f4;!;. a2) 10... bS 11 liJd2 (11 eS liJd7 12 liJd2, Bolduc-Zalys, Montreal 1984, 12 ... a6 13 .ie2 cS 14 l:.c1 .i.b7 IS 0-0 'i'b6 is slightly better for Black) 11 ...b4 (11...eS!? = and l1...a6!? 12 .id3 cS = are also good) 12 liJa4 eS 13 liJc4 (13

10aJ White plans to play b4, fixing the pawn on c6. 10••• b5!? This is a new and slightly paradoxical move: Black ignores White's threat, but quickly develops his queenside and seeks counterplay by ... as or ... eS. Other moves: a) 1O... cS 11 liJbS (11 l:.c1, ValliBarosso, corr. 1986, 11....i.d7 gives White a slight advantage) 11...'i'b8 and then: al) 12 dxcS .i.xcs 13 b4 (13liJbd6+ ~e7 14 liJxc8+, Razuvaev-Smagin,

7 ti:Jd2 dxc4 USSR Ch 1985, 14... ':'xc8 15 b4 b5 +) 13 ...i.e7 14 liJcd6+ i.xd6 15 liJxd6+ ~e7 16liJc4 (16liJb5 a6 17liJd4 e5 18 liJf3 i.g4 19 i.e2 ':'d8 with good play for Black) 16... e5!? (16 ....:.d8 17 'iVc2 'iIIc7 18 iVb2 ..td7 19 ..te2 ..tb5 20 ':'cl :j; Levitt-Matlak, Polanica Zdroj 1988) 17 i.e2 ':'d8 18 'ti'c2 i.e6 19 .:tel ~f8 200-0 'ito>g8 21 ':'fdl 'iIIc7 =. a2) 12 'iIIa4liJd7 (12 ... ..td7 13liJb6 axb6 14 'iIIxa8 'iIIxa8 15liJc7+ 'ito>d8 16 liJxa8 +-) 13 .:td 1 (13 dxc5!? ..txc5 14 b4 i.e7 15liJb6 i.f6 16liJxa8 ..txal 17 'jjxa7 'iIIe5 18 liJac7+ ±) 13 ... cxd4 (l3 ... a6? 14liJb6! +-liJxb615liJd6++ rJ;e7?! 16'ti'e8+ ~xd6 17 dxc5++ ~e5 18 'iVd8 forces mate; 13 .....te7? 14liJb6 +-) 14 ':'el (14 .:txd4 ..tc5, LevittFlear, Tel-Aviv 1989, 15 liJcd6+ ~e7 16 ':'d2liJf6 17liJe4liJxe4 18 'iIIxe4 ±) 14 ... 'ito>d8 15liJxd4 a6 16 ..te2 (16 i.d3 i.c5 17 'iIIa5+ 'iii>e8 18 ..te4 is much better for White) 16 ...'iVc7 17 'ti'dl ~e8 180-0 ±. b) lO ... ..td7 11 b4 a5!? (11.....te7 12 i.d3 0-0 13 0-0 ':'fd8 14 ':'el :j; Tuominen-Salokangas, 1996) 12liJxa5 (Gonzalez Garcia-Z.Szabo, Budapest 1995) 12 ... e5 13 dxe5 'iIIxe5 14 'ti'b3 is slightly better for White. c) lO ... i.e7 11 b4 (11 ..td3 0-0 12 0-0 ':'d8 13 b4 b6 14 liJe4, FitoussiGuillot, St Quentin 1999, 14 ... c5 =) 11...0-0 (l1...liJd5 12 .:tcl 0-0 13 i.d3 tLlxc3 14 .:txc3 ':'d8 15 0-0 ± Khenkin-Scherbakov, Sochi 1989) 12 i.d3 ':'d8 13 'iIIc2 i.d7 (Gschnitzer-Meister, Bundesliga 1989/90; 13 ... b6!?) 140-0 b6 15liJe4liJd5 16 ':'fel :j;. llliJe5 11 liJd2 a6 12 ..td3 (12 a4 i.b7 13 lIel e5 14 i.d3 exd4 15 exd4 i.d6 gives Black good play) 12 ... ..tb7 13

95

liJde4 (13 liJce4 c5 14 liJxf6+ gxf6 15 i.e4 f5 16 ..txb7 'iVxb7 with an excellent game for Black) 13 ... c5 14 ':'el liJxe4 15 i.xe4 i.xe4 16liJxe4 c4 with good play for Black. 11..•a612 b4 12 .:tel ..td6 13 f4 (13 liJf3 0-0 14 i.d3 i.b7 15 0-0 ':'fc8 16 b4 'iVe7 intending ... a5 =) 13 ... i.b7 14 b4 0-0 15 i.d3 'iVe7 160-0 a5 =. 12...i.d6 13 f4 13 liJd3 a5 14 ':'el 'iVb6 15 'iVf3 axb4 16 axb4liJd5 =. 13.•.i.b7 14.:tel 'iIIb6 15 ..td3 a5 A dynamic position with chances for both sides has arisen.

832) 10 g3 (D)

B

White reckons that his bishop will have a bright future on the long diagonal, whichever pawn-break Black ends up making. However, Black can gain satisfactory play in several ways: B321: 10.••c5 96 B322: 10•..i.e7 96 B323: 10••• b5 97 It is worth mentioning two other interesting moves:

96

THE CAMBRIDGE SPRINGS

a) lO ...4:JdS 11 ~g2 4:Jxc3 12 bxc3 bS (12 ... ~e7 13 0-0 0-0 14 a4, Guimard-Stahlberg, Buenos Aires 1941, 14 ... f6 IS J:.bl ':'b8 =) 13 4:JeS ~b7 14 a4 i.d6 IS 0-0 0-0 =. b) 1O... i.d7 11 i.g2 (11 ':'c1 cS 12 4:JeS ':'d8 13 'iVb3 cxd4 14 exd4 ~c6 IS 4:Jxc6 bxc6 16 i.g2 =) 11...i.e7 (11...cS is also possible) 12 e4 bS 13 4:JeS (Ac-Kriz, Kosice 1998) 13 .. J~d8 140-0 cS =.

8321) 10•.•c5 This has a risky appearance, but White isn't active enough to generate a quick initiative. 11 4:Jb5 Other continuations also fail to give White an advantage: a) 11 4:JeS 4:Jd7 12 i.bS cxd4 (or 12 ... ~e7 13 'fia4 cxd4 14 exd4 a6 IS 0-0 ':'b8 = Guimard-Euwe, Mar del Plata 1947) 13 'fixd4 (Eliskases-Guimard, Brazil 1941) 13 ... a6 14 i.xd7+ i.xd7 IS 4:Jxd7 'fixd7 16 'fixd7+ 'iitxd7 is level. b) 11 ~g2 and then: bl) 11...i.d7 12 dS exdS 13 4:JxdS 4:JxdS and here: b11) 14 'fixdS l:.b8 IS 0-0-0 (1S 'fieS+ 'fixeS 16 4:JxeS ~e6 17 ~f1 ~d6 +Paschall-Yee, North Bay 1999; IS 0-0, 1/2- 112 Ac-Majzlan, Piestany 1985, IS ... i.e6 16 'fie4 i.e7 with good play for Black) IS ... ~e6 16 4:Jd6+ ~xd6 17 'fixd6 'fixd6 18 J:.xd6 We7 19 J:.hdl b6 = Van der Sterren-Timman, Amsterdam 1994. b12) 14 i.xdS 0-0-0 IS a4 (IS 'ii'f3 fS 160-0 gS 17 l:.fdl g4 18 \i'g2 'iitb8 19 l:.d2 ~g7 20 J:.adl i.bS is equal) IS ... fS 16 'fif3 'iitb8 170-0 hS 18 l:.fdl

(Timman-Seirawan, Amsterdam 1983) 18 ... ~e7 19 ':'d3 gS 20 ':'b3 b6 =. b2) l1...cxd4 12 'ii'xd4 i.d7 13 0-0 (13 0-0-0 ':'c8 14 4:Jd6+ ~xd6 IS 'fixd6 i.c6 =ECO) 13 .. J~c8 14 4:Jd2 i.cs IS 'fic4 (IS 'fid3 0-0, O'Kelly de Galway-Stahlberg, Trencianske Teplice 1949, 16 4:Jb3!? J:.fd8 17 4:JxcS 'fixcs 18 i.xb7 ':'b8 =) IS ... 0-0 16 ':'fdl (16 4:Jb3, Levitt-Seirawan, Saint John 1988, 16 ... i.e7 17 'fixc7 l:.xc7 18 ':'fdl bS +) 16 .. Jlfd8 17 4:Jb3 ~e7 18 'fixc7 l:.xc7 is equal. 11 ...'fib8!? Worse is 11...'fic6?! 12 4:JeS 'fib6 (12 ...'fixhl 13 4:Jc7+ Wd8 14 4:Jxa8 is good for White - Lalit) 13 4:Jc4 'fic6 14 4:JeS 'ii'b6 IS a4 (1S 'fia4 i.d7, Engqvist-Thorell, Swedish Cht 1995/6, 16 4:Jxd7 4:Jxd7 17 0-0-0 cxd4 18 'ii'xd4 ;1;) IS ... cxd4 16 'fixd4 'fixd4 17 exd4 4:JdS 18 ~g2 ;1;. 12 'fia4 Or: a) 12 dxcS ~xcS 13 4:Jcd6+ We7 14 4:Jxc8+ J:.xc8 IS 'fib3 a6 16 4:Jc3 'iitf8 b) 12 i.g2 ~d7 13 4:Jc3 cxd4 14 exd4 'fic7 IS 4:JeS i.d6 16 'fie2 l:.c8 =. 12.•.4:Jd7 13 dxc5 i.xc5 14 b4 i.e7 15 4:Jb6 axb616 'ii'xa8 i.xb4+ 17 'iite2 'fie5 The position is equal; for example, 18 'fixc8+ (18 4:Jd4 'fic7 19 a3 i.aS 20 i.h3 \i'c4+; 18 4:Jd6+ ~xd6 19 'ii'xc8+ We7 20 'fixh8 'iVbS+ =) 18 ... 'iite7 19 'fixh8 (19 'fic2 'fixal 20 ~g2 'fieS 21 4:Jd4 ~cS +) 19... 'fixbS+ 20 ~f3 'fidS+ 21 e4 4:JeS+ 22 ~g2 'fixe4+ 23 Wgl 4:Jf3+ 24 'iitg2 4:JeS+ =.

8322) 10••• i.e7

7 tiJd2 dxc4 This calm approach is also effective. 11 i..g2 0-0 l1...ltJd5 12 'fib3 0-0 13 0-0 ltJxc3 (l3 ... i..d7!?) 14 'fixc3 i..d7 (14 ... a5!?) 15 b4 l:.fcS 16 l:.ac1 ;t Stoltz-Thomas, Folkestone OL 1933. 120-0 12l:.c1 -10 l:.el i..e7 11 g3 0-0 12 0-0.

12.•. b6!? Black prepares to oppose White on the long diagonal; this plan appears to be fully satisfactory. 12 ... l:.dS is inferior: a) 13 'ifc2 i..d7 (13 ... ltJd5 14l:.fcl i..d7 15 a3, Guimard-Kashdan, Stockholm OL 1937, 15 ... a5 =) 14 .l:f.fdl (14 a3, Luckis-Engels, Mar del Plata 1941, 14 ... c5 15 ltJe5 cxd4 16 exd4 .:tacS =) 14 ... i..eS 15 l:.ac1 (Kieninger-Engels, Stuttgart 1939) 15 ... c5 =. b) 13 'fie2 i..d7 14 ltJe5 i..eS 15 ltJd3 ;t Van der Sterren-Pinter, Budapest 19S9. c) 13.l:f.c1 i..d7 and then: c1) 14 e4 i..eS 15 e5 ltJd5 16 ltJe4 gives White a slight advantage, Sashikiran-Barua, Kelamabakkam 2000. c2) 14 a3 and now: c21) 14 ... i..eS 15 b4 l::tacS 16 ii'e2 ltJd5 (16 ... b617 .l:f.fdl c5 IS dxc5 bxc5 19 b5 ;t Damljanovic-Gligoric, Yugoslav Ch 1999) 17ltJe4 (17 ltJa5 'fibS IS ltJe4 b6 19 ltJb3, Capablanca-Michell, Hastings 1934/5, 19 ... c5 =) 17 ... b6 IS .l:!fdl c5 19 dxc5 bxc5 20 bxc5 is slightly better for White. c22) 14... c5!? 15ltJd2 (15ltJe5 cxd4 16 exd4 'fib6 17 ~e2 i..eS =) 15 ... i.c6 16 i..xc6 'fixc6 17 ltJa4 b6 IS b4 ltJd7 19 bxc5 bxc5 20 ltJxc5 ltJxc5 21 ltJb3 e5 =. c3) 14 'ilVe2 and then:

97

c31) 14 ... i..eS 15ltJe4 (or 15 l::tfdl l::tacS 16 a3 {16 e4 b5 17 ltJe3 b4 IS ltJa4, Bogoljubow-Seitz, Dortmund 1925, IS ... e5 with counterplay} 16 ... c5 is equal, Flores Alvarez-Engels, Buenos Aires OL 1939) 15 ...1:.acS (Stanciu-Grunberg, Dubai worn OL 19S6) 16ltJxf6+ i..xf6 17l:.fdl ;to c32) 14... l:.acS 15ltJe5 (15 a3, Berens-Steinhagen, Dortmund 1999, 15 ...c5 16 ltJe5 i.eS =) 15 ... c5 (15 ... i..eS 16 ltJd3 ;t Guimard-Engels, Mar del Plata 1941) 16 ltJxd7 (Grandt-Noack, corr. 19S7) 16 ... .l:f.xd7 17ltJa4;t. 13 a3 i.b7 14 b4 c5 14 ... .:tacS 15 'fib3 1:.fdS 16 1:.fdl = Polovodin-Shvedchikov, Moscow 1992. 15 dxc5 i.xg2 16 cJi>xg2 i.xc5!? 16 ... bxc5 17 b5l:.fdS IS 'iVc2ltJd5 = Bondarevsky-Yanofsky, Saltsjobaden IZ 1945. 17 bxc5 'iVxc5 18 'iVa4 l:.ac8 19 ltJxb6 axb6 20 l:.fel ii'd6 Black has an excellent game.

8323) 10...b5 This energetic idea works very well. 11ltJe5?! White should settle for I1ltJd2 i..b7 12 i..g2 a6 = Zalesky-Houser, Prague 19S9. 11 ...i.b7 12 i.g2 White must avoid 12 a4 b4 13 ltJa2 i..d6 14 i..g2 (Dziuban-Nei, Togliatti tt 1974) 14 ... l:.dS!? 15 f4 c5 16 i..xb7 'fixb7 17 'fif3ltJd5 +. 12...c5130-0 13 i..xb7 'iVxb7 14 0-0 a6 15 'ifb3 cxd4 16 exd4 l:.dS 17 .:tfd 1 i.d6 +. 13...i..xg214 cJi>xg2 a615.:tel i..d6 16 f4 0-017 'fif3 .l:f.ac8 Black has slightly better chances.

98

THE CAMBRIDGE SPRINGS

833) 10 l:.c1 (D)

B

This is obviously a useful move, since the c-file is a key battleground. Meanwhile, White delays a decision about where to put his bishop. Now: B331: 10....i.d7 98 B332: 10•.•.i.e7 99 Or: a) 10....i.b4 11 i.d3 ltJdS 12 0-0 ltJxc3 13 bxc3 i.e7 14 f4 g6 15 e4 ;!;; Scerbo-Rotelli, Cutro 2001. b) 1O... a6 11 .i.d3 .i.e7 (or l1...cS, Browne-Ljubojevic, Yugoslavia 1976, 12 dxcS ~xcS 13 0-0 i.d7 14 ltJe4 ltJxe4 IS .i.xe4 ±) 12ltJe5 ±. c) 1O... .i.d6 11 f4 (11 g3, AdamskiPinkas, Polish Ch 1987, l1...eS with counterplay) 11...0-0 12 .i.d3 i.d7 13 0-0 with a slight advantage for White, Lie-O.Larsen, Frederikshavn 1931. d) 1O ... ltJd5 and here: dl) 11 a3 .i.e7 (11 ... ltJxc3 12 %lxc3 ;!;; old ECO) and now: dll) 12 .i.e2 as (12 ... 0-0 13 0-0 ltJxc3 141:txc3 b6 ISltJeS ;!;; AucielloJ.Rodriguez, Buenos Aires 1996) 13 0-00-0 14 i.f3 l:.d8 IS ~c2;!;; Michaelsen-Hort, w.German Ch 1989.

d12) 12 i.d3 0-0 (or 12 ... ltJxc3 13 l:.xc3.i.f6 14 ~hS {14 0-0 eS IS dxeS .i.xeS 16 ltJxeS ~xeS 17 ~c2 ;!;; Ekstrom-Raicevic, Berne 1988} 14 ... h6 IS 0-0 is slightly better for White, Blachmann-Pulkis, COIT. 1986-91) 13 ~c2 h6 14 0-0 ;!;; Kelecevic-Mathe, Austria 1992. d2) 11 i.d3ltJxc3 12 bxc3 i.e7 13 0-00-014 f4 (14 ~hS g6 IS ~h6 i.f6 = old ECO) 14... b6!? (14 ... g6 IS ltJeS f6 {IS ... i.a3 16 l:.c2 f6 17ltJc4 i.e7 18 e4 ± Lasker-Bogoljubow, Nottingham 1936} 16 ltJf3 %ld8 17 ~3 Wg7 18 i.c4 .i.d6 ;!;;) IS ltJeS .i.b7 16 ~g4 cS with counterplay. d3) I1ltJe4 i.b4+ 12ltJed2 0-0 13 i.d3 i.e7 14 0-0 ;!;; 011- Yuneev, St Petersburg 1993.

8331) 10••.i.d7 Black covers the bS-square in preparation for playing ... c5. 11a3 Other moves: a) 11 i.e2 and now: al) l1...cS (Vacek-Michenka, Ceske Budejovice 1999) 120-0cxd413 ~xd4 i.c5 14 ~e5 %lc8 IS l:.fdl 0-0 16 ~xc7 l:.xc7 17 ltJeS leads to a slight advantage for White. a2) 11....i.e7 12 0-0 0-0 (12 ... l:.c8 13 ltJeS 0-0 14 .i.f3 %lfd8, HeITerosLosada Ferriz, Pont de Vii omara 1998, IS ltJe4 ;!;;) 13 i.f3 %lfd8 (TsesarskyKagansky, Givataim 1998) 14 ltJe4 ltJdS IS ~c2 f6 16ltJc5 ;!;;. a3) 11 ... %lc8 120-0 i.e7 (12 ... cS 13 dxc5 .i.xc5, Fliss-Geyer, Bad Kreuznach 1995, 14 e4 .i.c6 IS eS l:.d8 16 ~b3 ltJd7 17 ltJbS ;!;;) 13 ltJeS 0-0 14 .i.d3 cS with counterplay.

99

7liJd2 dxc4 b) 11 SLd3 cS (Il...SLd6, PfibylJirovsky, Brno 1990, 12lDxd6+ 'ii'xd6 13 'ii'b3 0-0 14 lDe4 lDxe4 IS SLxe4 ;t) 12 dxcS (120-0 cxd4 13 exd4 SLd6 14 g3 0-0 ISlDe4lDxe4 16 .i.xe4 with an equal position, Tarjan-Henley, Djakarta/SurakartalBali 1983; 12lDeS cxd4 13lDxd7, Forgacs-Przepiorka, Barmen 1905, 13 ... lDxd7 14 exd4 SLd6 IS1Vg4 0-0 16 1Vh3 h6 =) 12 .. :iixcS 13 0-0 SLc6 14 'ii'e2 ;to 11 ...SLd6 12 'ii'f3 Or: a) 12 g3 eS 13 dS l:td8 14 .i.g2 was played in Stempin-Pinkas, Polish Ch 1987, and now 14... 0-0 IS 0-0 l:tfe8 16 'ii'b3 .i.e7 17 dxc6 bxc6 is equal; the bishop-pair compensates for the weakness of Black's queenside. b) 12lDxd6+ 1Vxd6 131Vc2 0-0 14 lDe4lDxe4 IS1Vxe4;t. 12.••SLe7 13 SLd3 0-0 140-0 l:tad8 15 b4lDd5 16lDe5 White has a small advantage.

8332) 10•••.i.e7 Natural development turns out best here. 11 g3 Or 11 .i.d3 0-0 12 h3 (TzardisFambas, Athens 2000; 120-0 -10 .i.d3 .i.e7 11 0-0 0-0 12 l:tc1) 12 ... cS 13 dxcs1Vxcs 14 lDe4lDxe4 IS .i.xe4 fS 16 SLf3 1VbS =. 11 ...0-0 12 SLg2 l:td8 Other moves: a) 12... l:tb8 13 0-0 .i.d6 14 lDxd6 1Vxd6 IS1Va4 gives White a slight advantage, Johanson-Hughes, corr. 1997. b) 12 ... lDdS 13 0-0 l:td8 14 'ii'e2 SLd7 IS lDe4 SLe8 16 a3 l:tac8 17 b4 b6 18 l:tc2 ;t with an initiative (ECO) ,

Polugaevsky-Sveshnikov, Kislovodsk tt 1982 (18 'ii'b2 'ii'b8 19 ':'c2 fS 20 lDc3lDxc3 21 l:txc3 SLf6 = LilienthalMikenas, USSR Ch (Moscow) 1949). c) 12 ... ':'e8 13 0-0 lDd7 14 1VhS g6 Is1Vf3 with better chances for White, Busch-Wilk, Deidesheim 2000. 13 'ii'b3 SLd714 0-0 14 a3 (H.Steiner-Turover, Bradley Beach 1929) 14... .:.ab8 IS 0-0 cS =. 14••. .i.e8 15 ':'fdllDd5 Or: a) IS .. Jlac8 16 e4 bS (16 ...b6 17 eS lDdS 18 lDe4 l:tb8 19 f4 'i¥d7 <Xl Honlinger-Becker, Vienna 1928) 17 lDe3 'i¥a5 (17 ... 'ii'b6 18 eSlDdS 19lDe4, Reshevsky-Horowitz, Lakewood 1941, 19 ... aS 20 lDcs .i.xcs 21 dxcs1Vc7 =) 18 a3 (18 eS lDd7 =) 18 ... cS 19 dS c4 20 'i¥c2 .i.cs Euwe-Seitz, Hastings 1923. b) IS ... l:tab8 16 e4 bS 17lDe3 (Contini-Bellini, Lombardia 1989) 17...'i'b6 18 eS lDdS with good play for Black. 16lDe4 b6 16.. Jlab8 17 a3 f6 (17 ... b6!? 18 'i¥c2 cS with counterplay) 18lDcs .i.f7 19 .i.h3 .i.xcs 20 dxcS eS ;t LoizaGiuffrida, Buenos Aires 1992. 17 a3 l:tac8 18 l:td2 f6 19 l:tdc2 'ii'd7 20 lDcd2l:tc7 A position with chances for both sides has arisen, Suhl-Yusupov, Altenkirchen 1999.

+

834) 10 .i.d3 (D) This is perhaps the most obvious move on the board, but the bishop can be argued to be a little clumsier on d3 than it is on e2. 10.••.i.e7 Other moves:

100

THE CAMBRIDGE SPRINGS

B

a) 1O... c5?! 11 liJb5 (11 0-0 cxd4 {I1.....td7!?} 12liJb5 'iWb8, Fecht-Olivier, Lugano 1989, 13 'ii'a4 ..td7 14 exd4 liJd5 15 liJe5 ±) 11...'iWb8? (Palmason-Halfdanarson, Reykjavik 1966; 11..:iWc6 is better) 12 'ii'a4 liJd7 13 dxc5 ..txc5 14 b4 ..te7 15liJb6 +-. b) 1O...ltJd5 11 0-0 liJxc3 12 bxc3 b6 (intending ... c5 and ... ..tb7; 12 ... ..te7 13 e4 0-0 14 e5, Czebe-Kosak, Balatonbereny 1995, 14... c5 15 'ii'h5 g6 16 'ii'g4;1;) 13 ..te4 ..tb7 14 'ii'h5 ;1;. c) 1O ... ..td6 11 h3 (11 'ii'f3 ;1;; 11 lDxd6+ ;1;) 11...0-0 12 0-0 e5 13 dxe5 ..txe5 14liJxe5 'ii'xe5 = Odde-Sandum, Luxembourg 1987. d) 1O... b5 11 liJe5 a6 12 a4 ..tb7 and then: dl) 13 0-0 ..td6 14 axb5 (14 f4!?) 14 ... cxb5 15 ..txb5+?! (Miguel-Gutierrez, Peru U-26 1997) 15 ... axb5 gives Black a slight advantage. d2) 13 .u.cl ..td6 14 f4 ;I; AarlandGlenne, Stavanger 1989. e) 10... ..td7 11 0-0 and here: el) 1l.....te7 12 l:tel (12 'ilVe2 l:tc8 13 l:tael 0-0 14 l:tfdl ;I; Ylisela-Linqvist, Finland 1991) 12 ... 0-0 (12 ... c5 13 dxc5, Iaselli-Esposito, Italy 1997, 13 .. :~xc5 14 liJe4liJxe4 15 ..txe4 with better chances for White) 13 e4 l:tfd8

14 e5liJd5 15liJe4;1; Koska-Pachman, Czechoslovak Ch 1944. e2) 11.....td6 12 lDxd6+ 'ii'xd6 13 l:tel (13 'ii'f3!?) 13 ... e5!? =. e3) ll...c5 12liJe5 and then: e31) 12 ... a6 13 .u.cl (Tanner-de la Vega, Buenos Aires 1992) 13 ... ..td6 14 f4.u.c8 15liJa4liJd5 16 .u.el ±. e32) 12... ..td6 (Maier-Weiss Nowak, Liechtenstein 1988) 13 liJxd7! 'it>xd7 (13 ... liJxd7 14 liJb5 'ii'b6 15 liJxd6+ 'ilVxd6 16 dxc5 ±) 14 liJb5 'ii'b6 (or 14... ..txh2+ 15 'it>hl 'ii'b8 16 f4 ±) 15 liJxd6 cJi>xd6 16 dxc5+ 'ii'xc5 17 'ii'b3 ±. e33) 12 ... cxd4! 13 exd4 (13 liJxd7 liJxd7 14 exd4 ..td6 15 'ii'h5 liJf6 16 'iWb5+ 'it'd7 =) 13 ... ..td6 14liJb5 ..txb5 15 ..txb5+ ~e7 16 .u.cl 'ii'b6 =. 11 0-0 0-0 12 .u.c1 12 'ii'f3 b6 13 liJe5 ..tb7 14 'ii'e2 c5 was played in Gromova-Pudalova, St Petersburg 1997 and now 15 f4!? is level. 12•..l:td8 Alternatively: a) 12... a6 13 liJe5 liJd5 14 liJxd5 (14 'ii'h5!?) 14... exd5 15 f4 (CervenyHorak, Nachod 1999) 15 ... ..td6!? 16 a3 f6 17 liJf3 l:te8 =. b) 12 ... liJd5 13 ..tbl (13liJe5 g6 14 'ii'f3liJxc3 15 .u.xc3 ..td6 16 'ii'f6 and a draw was agreed here in Ivanchuk-Hort, Bie11989; 13liJe4 f5 14lDed2 ..tf6 15 liJf3 ..td7 16 ..tbl, Leveille-Zalys, Montreal 1979, 16 ... ..te8 17 liJce5 ..th5 is equal) 13 ...lDxc3 (Wohl-Raddatz, Oberhof 1998) 14l:txc3!?;I;. c) 12 ... c5 13 dxc5 (13liJb5 'ii'd8 14 dxc5 ..txc5 15 liJe5 ;I; Tarrasch-Rubinstein, Semmering 1926) 13 ... 'ii'xc5 14 liJe4 (14 a3 ..td7 15 b4 'ii'c7 16 liJa5 leads to a slight advantage for White,

7 tiJd2 dxc4 Cramling-Flear, Palma de Mallorca 1991; 14 e4, Hassim-Dikmen, COIT. 1999, 14... ltJd7!?;1;) 14...ltJxe4 IS i..xe4 ~b8 16 a3 ~d8 17 'iVe2 (17 'iVc2, Kelecevic-Baburin, Budapest 1992, 17 ... fS =) 17 ... i..d7 18 .l:tfdl;1;. d) 12 ... b6 13 ltJeS (13 ltJe4, Aufschild-Ulmer, Bavaria 2000, 13 ... ltJxe4 14 i..xe4 i..b7 IS 'iVhS fS 16 i..f3 cS 17 i..xb7 'iVxb7 18 dxcS i..xcs 19 a3 =) 13 ... cS 14ltJbS (14ltJe4 i..b7 ISltJxf6+ i..xf6 16 ltJg4 i.e7 = Falz-Chapman, Willingen 1999; 14 b4 cxd4, Marczykoski-El Messiry, COIT. 1996, IS exd4 i..b7 =) 14 ... 'iVb7 IS dxcS bxcS 16 'iVc2 nb8 17 ~fdl ;1;. 13 'iVe2 Instead: a) 13 'iVc2 g6 (Zankl-SchOnau, Bavaria 1998) 14ltJeS!?;1;. b) 13ltJe4 (Fazekas-Mikenas, Bmo 1931) 13 ... ltJxe4!? 14 i.xe4 fS IS i.d3 cS 16 'iVb3 ~f8 17 dxcS i..xcs 18 i..e2 ;1;. c) 13 li'f3 cS (13 ... i.f8 14 .l:tfdl 'fIfe7, Kashdan-Thomas, London 1932, ISltJeS ;1;) 14 ~fel cxd4 IS exd4 'iVb8 16 'iVe3 ;1;. d) 13 ltJeS i..d7 and here: dl) 14 f4 i..e8 IS nf3 (HerzogBecker, Teplice 1937) IS ... cS 16 ~h3 h6 17 dxcS 'iVxcs 18 a3 ~ac8 =. d2) 14 i..bl i..e8 IS 'iVc2 ~ac8 (Thomas-Rubinstein, Southport 1924) 16 ltJg4 g6 17 ltJxf6+ i..xf6 18 ltJe4 i..g7 ;1;. d3) 14ltJe4ltJxe4 IS i..xe4 i.e8 16 'ili'b3 (16 li'c2 g6 17 'iVc31bc8 18 b4 i..d6 19 f4 ;1; Orso-Halasz, Hungarian Cht 1995/6) 16 ... 'iVb6 (16 ... .l:tac8 17 f4 g6 18 g4 ;1; with an initiative, VacekKulhanek, Czech Cht 1999) 17 l:.c3 (17 'ili'c2 g6 18 a3;1;) 17 ... 'iVxb3 (17 ... l:.ac8

101

18 'iVc2 ;1; Laschet-Pichler, Austrian Cht 199617) 18 l:.xb3 .l:tab8 is slightly better for White. 13.••i..d7 Or: 13 ... i..d6 14 f4 'fIfe7 IS ltJeS ;1;. 13 ... a6 14 ltJeS .lld7 IS ltJe4 ltJxe4 16 i..xe4 ;1; Minogina-Chekhova Kostina, USSR worn Ch 1981. 14ltJe5 Or: a) 14 ltJe4ltJxe4 IS .llxe4 .lle8 16 a3 as (16 ... l:.ac8!?) 17 'fIff3 (El KherCu.Hansen, Danish Ch 1999) 17 ... fS!? 18 i.d3 cS ;1;. b) 14 l:.fdl i.e8 (14 ... cS!?) ISltJeS l:.ac8 16 ltJa4 (16 a3 cS = VidmarSpielmann, Sliac 1932; 16ltJf3 cS 17 dxcS 'iixcs = Teichmann-Rubinstein, Berlin consultation 1921) 16... ltJd7 17 ltJxd7 l:.xd7 18 ltJcs ;1; Griinfeld-Pirc, Ujpest 1934. c) 14 a3 i..e8 (14 ... .l:tac8 IS b4 .lle8 16 f4ltJd7 17 .l:tf3;1; Gereben-H.Steiner, Gyor 1930; 14 ... cS IS dxcS 'iVxcs 16 b4 'iVc7, Lilienthal-Pirc, Ujpest 1934, 17ltJaS'iVb8 18ltJe4;1;) IS b4 (1S h3 cS 16 dxcS 'iVxcs 17 b4, FederauGawehns, Bundesliga 1985/6, 17 ...'iigS 18 ~fdl i..c6 =) IS ...b6 (Steiner-Noteboom, Bmo 1931) 16 ltJe4 ltJdS 17 ltJeS ;1;. 14... i.e815 a3 Worse are: a) IS i..bl ~ac8 16 f4 cS 17 ltJe4 ltJxe4 18 i.xe4 f6 19 ltJf3 1i'b6 = Saralegui-Castro, 1988. b) ISltJf3cSI6~fdl i..c617dxcS i..xcs 18 ltJbS 'iVb6 19 ltJbd4 i..dS = Lerfald-Berc1az, COIT. 1994. c) IS f4 cS 16ltJe4 (16 dxcS 'iVxcs 17 ltJe4 1i'aS 18 ltJgS ~ac8 19 a3 bS is equal, Alekhine-Kashdan, Bled 1931)

102

THE CAMBRIDGE SPRINGS

16... tLJxe4 17 i.xe4 fS 18 i.d3 'ii'b6 112-112 Foltys-Pirc, Stockholm OL 1937. 15.••':'ac816 tLJa4 16 tLJe4 tLJxe4 17 i.xe4 f6 18 tLJf3 ;!; Holowach-Fox, Vancouver 19S1. 16...tLJd5 17 f4 f6 18 tLJf3 b6 19 i.a6 l:.b8 The position is level, Swiderski-Von Bardeleben, Coburg 1904.

835) 10 i.e2 (D)

B

From here, the bishop can switch to f3 if appropriate, and it does not hinder the white queen's view of events on the d-file. 10...i.e7 Other moves: a) lO ... bS 11 tLJd2 i.b7 120-0 i.d6 13 h3 ;!; Van Dongen-Van der Meulen, Leiden 1997. b) lO ... cS 11 0-0 (Miinder-Hodakowsky, Germany 1977/8) l1...a6 12 dxcS .lixcs 13 tLJa4 bS 14 tLJxcs 'iVxcs IS tLJd6+ ~e7 16 i.f3 ;!;. c) 1O... .lib4 11 0-0.lixc3 01...0-0, Zikan-Stastny, Bmo 1996, 12 a3 i.e7 13 ':cl .lid7 14 b4 ;!;) 12 bxc3 0-0 13 i.f3 ;!; Toth Vano-Halasz, Bratislava 1996.

d) 1O... i.d6 11 f4 0-0 12 0-0 i.d7 13 tLJxd6 'iVxd6 (Kolas-Sandum, Luxembourg 1988) 14 'iVb3!? b6 IS :adl ;!;. e) lO ... tLJdS 11 0-0 tLJxc3 12 bxc3 b6 (12 ... i.e7 13 i.d3 0-0 14 tLJeS g6 IS 'iVg4 ;!; David-Eliskases, Innsbruck 1939) 13 f4 i.e7 14 .lid3 ;!; Napolitano-Romi, Italian Ch 19S7. f) 10... i.d7 (preparing ... cS) and now: fl) 11 'iVc2 cS 12 dxcS i.xcs 13 0-0 0-0 14 :ac1 i.c6 with good play for Black, Zikan-Strelicka, Bmo 1996. f2) 11 0-0 cS (11. .. .lie7!? 12 :el {12 tLJeS!?; 12 ':'c1 !?} 12 ... 0-0 13 e4 l:f.fd8 intending ... cS = Lutz-Baburin, Budapest 1991) and then: f21) 12 tLJeS cxd4!? (Filip; 12 ... a6 13 ':'cl ':'c8, Dunne-Yee, Philadelphia 2000, 14 tLJa4 ±; 12 ... i.d6?! 13 tLJxd7 tLJxd7 14 tLJbS ± EeO) 13 tLJxd7 tLJxd7 14 'iVxd4 a6 IS l:.fdl leads to a slight advantage for White, Domauer-Hebesberger, Austria 1997. f22) 12:c1 cxd4 and now: f221) 13 exd4 .lid6 (13 ... ii.e7 14 tLJeS ;!; Litinskaya-Ladanine, Bradt 1985) 14 tLJxd6+ 'iVxd6 IS tLJbS i.xbS 16 .lixbS+
7 liJd2 dxc4 f4) 11 a3 eS 12 0-0 (12 l:.c1 exd4 13 'ti'xd4 .JteS 14 'ti'eS with a similar position to that which arises after 12 0-0, Santa Torres-Razzak, Novi Sad OL 1990; 12 dxeS .JtxeS 13 b4 .Jte7 14 l:.c1 0-0 IS 0-0 l:.fd8 =) 12 ... exd4 13 exd4 .Jtd6 14 g3 .Jte6 IS l:.e 1 0-0 16 b4 a6 (16 .. .l:Hd8 17 lbaS 'iid7 18 lbxe6 'iVxe6 19 .Jtf3'iid7 20 'iib3 l:.ae8 112-112 Al Bitar-Russek, Dubai OL 1986) 17 lbaS l:.ae8 18lbxe6'iixe6 19lba4'iie8 20 lbeS 'iie7 = Simic-Cebalo, Yugoslav Ch 1984. fS) 11 'iib3!? .Jte7 12 0-0 0-0 13 l:.ael eS 14 dxeS .JtxeS IS .Jtf3;!; Loffler-lirovsky, 2nd Bundesliga 1993. 11 0-0 11 a3 is an alternative: a) 11...0-0!? 12 b4 (12 0-0 -110-0 0-0 12 a3) 12 ... aS (12 ...l:.d8 13 'iib3 .Jtf8 {13 ... b6!? looks better} 14 0-0 'ti'e7 IS %:tac1 .Jtd7 16 .Jtf3 .Jte8 17 lbe4 lbxe4 18 .Jtxe4 is slightly better for White, Marxen-Weber, Berlin jr 1996) 13 bxaSl:haS 14lbxaS'iixaS IS 'ti'd2 .Jtb4 (Nikolaidis-Vul, CappeUe la Grande 1995) 16 axb4 'iixal + =. b) 11....Jtd7 12 %:te 1 0-0 13 0-0 l:.fd8 (13 ... eS 14 dxeS 'iixeS IS b4 'iie7 16 lbaS ;!; Rashkovsky-Smagin, USSR Ch 1986; 13 ...lbdS 14 b4 l:tfe8 IS 'iib3 'iid8 16 l:.fd 1 .Jte8 17 .Jtf3 l:.e7 18lbe2 ;!; Timman-Hort, Amsterdam 1980) 14 b4 and then: bl) 14... l:tae8 IS'iib3 .Jte8 16.Jtf3 (16 l:.fdl .Jtf8 17 g3lbdS 18lbe4 'iie7 19lbeS b6 20 lbd3 ;!; Cramling-Pinter, Ponferrada 1992) 16... 'iib8 (16 ... .Jtd6, W.Sehmidt-Matlak, Slupsk 1989, 17 lbxd6!? ;!;) 17 l:.fdl lbdS 18 e4 ;!; L.Bronstein-Soppe, La Carlota 1995. b2) 14... .Jte8 IS 'iYb3lbdS 16lbe4 (16 l:.e2, Beliavsky-Pinter, Hungarian

103

Cht 1998/9, 16... f6!? 17 .Jtf3 .Jtn 18 l:.dllbb6 =) and here: b21) 16... .Jtf8 17lbcs (17 .Jtf3'iie7 18 g3 b6 19 l:te2 as with eounterplay, Petursson-Pinter, Tilburg 1993) 17...'iie7 18 l:tfd 1 %:tab8 19lbeS f6 20 lbed3 .Jtf7 21 'iie2 ;!; 112-1/2 lasnikowski-Matlak, laehranka 1987. b22) 16... l:tae8 17 l:.fdl 'iib8 (or 17 ... b6 18 l:te2 {18lbeS'iib7 19 .JthS l:te7 20 l:td2;!; Chiburdanidze-Portiseh, Roquebrune 1998} 18 ... a619l:tdc11i'b7 20 lbeS ;!; Meyer-Baburin, Biel 1992) 18 .Jtf3 b6 19 lbeS 'tWa8 (19 ...l:te7, Ribli-Pinter, Budapest 1991,20 l:td2;!;) 20 l:.d2 as with some eounterplay but White's position looks better, Van Wely-L.B.Hansen, Wijk aan Zee 1995. 11 •.•0-0 (D)

Now White must decide how to promote his queenside play/pressure: B351: 12 a3 104 B352: 12 'iic2 104 B353: 12 l:tc1 104 Or: a) 12 l:tbl .Jtd7 13 e4 bS 14 eS bxe4 IS exf6 .Jtxf6 16 lbe4 .Jte7 17 .Jtxe4 with equality, L.Steiner-Gereben, Vienna 1935.

104

THE CAMBRIDGE SPRINGS

b) 12 i.f3 .:td8 13 'iVc2 i.d7 14 e4 b5 15 ttJe3 .:tac8 16 e5 ttJd5 = Unzicker-Ljubojevic, Moscow Echt 1977. c) 12 a4 c5!? (12 ... .:td8 13 'ilib3 i.d7 14 i.f3 i.e8 15 .:tfdl .:tac8 16 a5 ;1; Kabisch-Olivier, Lugano 1989) 13 dxc5 (13 ttJb5 'i'b8 14 dxc5 i.xc5 15 'i'b3 i.d7 16 .:tfdl i.c6 =) 13 ... i.xc5 14 'iVbl i.d7 15 l:.cl .:tfd8 16 b4 i.e7 17 b5 .:tac8 =. d) 12 'i'bl .:td8 13 l:.el (FrancoAcosta, Cali 2000) 13 ... c5 14 dxc5 'iVxc5 15 ttJe4 'i'b5 16 'iVc2 ttJxe4 17 'iVxe4 i.d7 =.

8351) 12a3 This slow move has the clear intention of following up with b4. 12••• e5 Other continuations: a) 12 ... a6 13 ttJe5 ttJd7 14 f4 ttJxe5 15 fxe5 c5 16 ttJe4;1; Korhonen-Gnirk, COIT. 1987. b) 12 ... b6 13 i.f3 (13 b4 i.b7 14 'iVb3 l:.ac8 15 .:tfdl .:tfd8 16 i.f3 ttJd5 is equal, B.H.Nielsen-R.Andersen, Tastrup 1999) 13 ... i.a6 14 'iVb3 l:.ab8 15 .l:tid1 (Lang-Schnock, Neumiinster 1999) 15 ... i.xc4 16 'i'xc4 l:.bc8 17.:tael ;1;. c) 12... l:.d8 13 b4 i.d7 14 'iVc2 (14 'iVb3 i.e8 15 .:tfel b6 {15 ... i.f8 16 i.f3 'i'e7 17 .:tab1 ;1; Novikov-A.N.Panchenko, Belgorod 1991} 16 i.f3 .:tab8 17 .:tab 1 a6 18 ttJe4 ttJxe4 19 i.xe4 c5 20 ttJe5 'ilid6 21 ttJc4 'i'c7 22 ttJe5 'iVd6 1/2- 1/2 Cvitan-Yusupov, Swiss Cht 1999) 14...i.e8 15 .:tfel .:tac8 (15 ... ttJd5 16 ttJe4 ttJb6 17 ttJa5 ;1; Schouten-Van Maaren, Dutch Cht 1996) 16 i.f3 b6 17 g3 ttJd5 18 ttJe5 c5 1/2- 1/2 TimmanLjubojevic, Bugojno 1978. 13 ttJe5

Or: a) 13 l:.cl (Renman-Emst, Linkoping 1984) 13 ... l:.d8 14 'iVc2 i.d7 15 dxc5 'i'xc5 16 b4 'i'c7 17 i.d3 b5 18 ttJa5 .:tac8 =. b) 13 ttJb5 'tib8 14 dxc5 i.xc5 15 b4 i.e7 16 l:.el .:td8 17 'iVc2 i.d7 18 ttJd4 .:tc8 = Gomez Esteban-Flear, Elgoibar 1994. 13...exd4 14 exd4 Isgro-Dyer, COIT. 1994. Now Black can equalize with 14 ... .:td8.

8352) 12 'tie2 i.d7 Other moves: a) 12 ... ttJd5 13 .:tael (13 l:.ae1 b6 14.:tel i.b7 15 .:tfd1 .:tac8 = HodgesCapablanca, New York 1915) 13 ... i.d7 14 ttJe5 ttJxc3 15 'tixc3 a5 16 i.d3 g6 17 i.b1 i.f6 18 ttJf3 is slightly better for White, Ulms-Fischdick, Bundesliga worn 1994/5. b) 12... a6 13 a4 (13 ttJe4!?) 13 ... c5 (Frieson-Kieran, Faber Cup 1997) 14 dxc5 i.xc5 15 .:tfd 1 i.d7 16 i.f3 .:tfd8 17 .:tael i.c6 =.

13e4 13 ttJe4!? 13....:tad8 Or 13 ... c5 14 e5 ttJd5 15 ttJxd5 exd5 16 ttJe3 with equality, Kilpi-Linqvist, Vaasa 1996. 14.:tfdl Tempone-Taimanov, Los Polvorines 1980. Black can now equalize with 14 ... c5!? 15 e5 ttJd5 16 dxc5 i.xc5 17 i.d3 h6.

8353) 12.:tel (D) 12...l:.d8 Or:

7 tiJd2 dxc4

B

a) 12 ... a613ltJeS .l:.d8 14 ~d3 ~d6 IS f4 ltJdS 16 'fihS ;t Van TrichtMilller, COff. 1997. b) 12 ... cS 13 ltJbS 'fid8 14 dxcS ~xcS ISltJeS 'fie7 16 'fic2 gives White a slight advantage, Sandstrom-Johansson, Jonkoping 1987. c) 12 .. .l:le8 13 e4 ~b4 14 eS was played in Hogye-Cillo, Budapest 1992, and now 14... ltJdS IS ~d3 .l:.d8 16 'fig4 ~e7 17 :lfdl is slightly betterfor White. d) 12 ... b6 13 ltJeS (13 a3 ~b7 14 b4, Bocharov-Afanasiev, Tomsk 2001, 14 ... cS!? IS dxcS bxcS 16 'fia4 .l:.ac8 17 bS ~dS =) 13 ... ~b7 14 ltJbS 'fic8 IS ~f3 ;t Candela-Sanchez Guirado, Barcelona 2000. 13 'fic2 Other moves: a) 13 ~f3 ltJdS 14 ltJe4 (14 'fic2 ltJb4 IS 'ii'bl ;t) 14 ... ~d7 IS a3 ~e8 16 b4 ltJb6 17 ltJed2 liz-liz Barsov-Panchenko, Tashkent 1986. b) 13 ltJeS ~d7 14 ~f3 ~e8 IS ltJe4 ltJdS 16 a3 .l:.ac8 (16 ... f6!? 17 ltJd3 eS with counterplay) 17 g3 'fib8 18ltJd3 b6 19 b4 'iVb7 20 'iVb3 na8 21 ltJd2 as 22 .l:.c2 axb4 23 axb4 liz-liz Lukacs-Flear, Gausdal 1987. c) 13 'fib3 and then:

105

cl) 13 ... ltJd7?! 14 ~f3 ltJf6 (not 14 ...b6? IS ltJbS cxbS 16ltJeSltJcS 17 ~xa8 'fixeS 18 dxeS ltJxb3 19 axb3 winning for White, Shneider-Laine, JyvaskyHi 1993; 14... eS IS dS ;t) IS .l:.fdl ~d7 16 ltJe4ltJdS 17ltJcS ;t. c2) 13 ... ltJdS 14ltJe4 (14 i..f3 ~d7 IS :lfdl :lac8 16 e4 ltJxc3 17 'iVxc3, Hounie Fleurquin-Bolbochan, Mar del Plata 1934, l7 ... cS!? 18 dS exdS 19 exdS ~f6 =) 14... i..d7 (14 ... aS!?) IS ~f3 as 16 a3 ~e8 17 .l:.fdl 'fib8 18 :ld2 :la7 19ltJeS;t Maduekwe-Ng Ek Teong, Manila OL 1992. c3) 13 ... ~d7 14 ~f3 ~e8 IS :lfdl and then: c31) IS ...:lab8 (Michell-Kashdan, Hastings 1931/2) 16ltJe4!?;t. c32) IS ...:lac8 16 e4 (16 a4;t Finegold-Odendahl, Chicago 1984) 16 ... bS (16 ... 'ii'b8, Kinsman-Daly, Edinburgh 1996, 17 eS!? ltJdS 18ltJe4;t) 17ltJe3;t Cramling-Soppe, Buenos Aires 1994. c33) IS ... ltJdS 16 g3 .l:.ac8 17 ltJe4 b6 (17 ... ~f8, Bock-Halasz, Germany 2000, 18ltJcS!?;t) 18 a3 'ii'b8 (18 .. .f6!?) 19 'iVa2 .l:.c7 20 b4 cS 21 bxcS bxcS 22 ltJxcs ~xcS 23 dxcS liz-liz GolodL.B.Hansen, Copenhagen 2000. 13...i..d7 13 ... ltJdS is worse: a) 14ltJe4 i..d7 IS a3 as (IS ... l:ac8 16 b4 ~e8 17 'ii'b3 f6 18ltJcS ;t IonovVul, Moscow 1990) 16 ltJeS ~e8 17 ltJd3 ltJf6 (17 ... b6!?) 18ltJd2;t Schussler-Ernst, Swedish Ch 1983. b) 14 .l:.fdl ~d7 ISltJe4 ~e8 16 a3 .l:.ac8 17 b4 'fib8 18 'ii'b2 ;t RuferSielaff, Germany 1989. 14ltJe5 (D) Or: a) 14 ltJe4 ltJxe4 IS 'ii'xe4 cS 16 dxcS i..c6 17 'ii'eS 'fixeS 18 ltJxeS .l:.d2

106

THE CAMBRIDGE SPRINGS

with counterplay, Kasparov-Am.Rodriguez, Moscow IZ 1982. b) 14 a3 cS (14 ... .lie8 IS b4 b6 {IS ...:ac8 16 lLlaS lLldS 17 lLlxdS exdS ;!; Denker-Horowitz, New York 1933} 16 lLleS 'ii'b7 17 .liB lLldS 18 lLle2 ;!; l:tac8 19 e4 1/2- 1/2 Ribli-Yusupov, Germany 1997) IS dxcS'ii'xcs 16 b4 'ii'c7 17'ii'b2 l:tac8 =Arkhipov-Erendzenov, Maikop tt 1998. c) 14.liB cS!? (14 ... .lie8 IS lLle4 lLldS 16 a3 b6, Pelletier-Yusupov, Essen 2000, 17 l:tfdl ;!;; 14 ... .:ac8 IS lLleS .lie8 16 lLld3 as 17 l:tfdl lLldS 18 lLla4 .lid6 19 g3 lLlb4 20 'ii'b3 l:tb8 21 a3 lLlxd3 22 l:.xd3 ;!; Ukhanov-Malevinsky, Yaroslavl 1995) IS dxcS (IS dS exdS 16 lLlxdS lLlxdS 17 .lixdS .lic6 18 .lixc6 'ii'xc6 =; IS lLleS cxd4 16 exd4 'ii'b6 17 l:tfdl .lie8 =) IS ... .lixcs 16 lLle4.lie7 17 lLlxf6+ .lixf6 18 b4 l:tac8

=

d) 14 e4!? .lie8 IS ':fdl (IS eS lLldS 16'ii'e4 cS, Moiseev-Loktev, Moscow tt 1974, 17 dxcS .lic6 18 .lid3 g6 with good play for Black) IS ....:ac8 (1S ...cS!?) 16 eS lLldS 17 lLle4 (Laine-Sipila, Finland jr 1987) 17 ... f6 18 lLlcd6 ;!;.

B

14•.•.lie8 Alternatives: a) 14...l:.ac8 IS lLle4 .lie8 (K.BergCu.Hansen, Esbjerg 1980) 16 lLlxf6+!? .lixf6 17 f4 ;!;. b) 14 ... cS!? IS lLle4 lLlxe4 16'ii'xe4 .lic617 lLlxc6'ii'xc618'ii'g4 (18'ii'xc6 bxc6 19 dxcS l:.d2 20 .liB l:txb2 21 a4 ':c8 22 ':fdl ':c7 =) 18 ... 'ii'b6 19 dxcS .lixcS 20 l:tc2 l:td7 21 l:tfc1 .lie7 =. 15 a3 Worse are: a) IS lLlf3 (Prucha-Richter, Prague 1945) IS ... cS 16 ':fdl cxd4 17 lLlxd4 .lid6 18 h3 l:tac8 with good play for Black. b) IS f4 cS 16 lLldl (16 :fdl !?) 16...'ii'aS 17 dxcS l:.ac8!? (alternatively, 17 ....:d2 18'ii'c4, Engel-Vidmar, Sliac 1932, 18 ... .lixcS 19 'ii'xcs 'ii'xcs 20 l:txcS l:txe2 =) 18 'ii'c3'ii'xcs 19'ii'xcS .lixcs =t. c) IS a4 cS!? (1S ... l:tac8 16 f4 cS with good play for Black, Espinosa ColI-Losada Ferriz, Pont de Vilomara 1998) 16 lLlbS'ii'b8 17 lLlB a6 18 lLlc3 cxd4 19 lLlxd4 .lid6 =t. 15••.l:tac816 b4 .lid617 f4 Sch6ne-Chekhov, Germany 1995. Now Black can achieve enough counterplay by 17 ... as 18 'ii'b3 axb4 19 lLlbS 'ii'e7 20 lLlxd6 'ii'xd6 21 axb4 lLldS =. It appears to us that 7 ... dxc4 is entirely satisfactory for Black. His position may be a little cramped, and some of the positions rather quiet or even dull, but the bishop-pair also provides him with long-term chances.

8 7 ttJd2 ~b4: Minor Lines 1 d4 d5 2 c4 e6 3 liJc3 liJf6 4 i.g5 liJbd7 5 e3 c6 6liJf3 'i!i'a5 7liJd2 i.b4 (D)

w

Black steps up the pressure on the a5-el diagonal, making ideas such as ... liJe4 more potent. However, we feel that if White plays accurately, then he has good chances of keeping an edge. The main line is now 8 it'c2 0-0 (see Chapter 9); in this chapter we consider alternatives for both sides. 8it'c2 Or: a) 8 .:tel? liJe4 9 liJdxe4 dxe4 10 i.h4 it'xa2 11 it'c2liJb6 is much better for Black, Ormasen-De Lange, Hamar 1982. b) 8 it'el and then: bl) 8...liJe4 9liJdxe4 (9liJcxe4 dxe4 10 i.f4 e5, Napier-Teichmann, Glasgow 1905, 11 i.g3 exd412 exd4 0-013 a3 i.e7 =) 9 ... dxe4 10 i.h4 0-011 i.e2 e5 120-0 t Klimek-Bottcher, Germany 1991.

b2) 8... dxc4 9 i.xf6liJxf6 10 liJxc4 (10 i.xc4 0-0 11 a3 i.d6 = Sele-Lie, Molde 1992) 10 ... it'c7 (10 ... it'd8 11 a3 {II .ltd3 0-0 12 0-0 c5 = TeichmannChajes, Karlsbad 1923} 1l...i.e7 12 b4 t Potapov-Kozlov, Perm 1997) 11 a3 i.e7 12 i.d3 (12 e4 0-0 13 i.d3 is equal, Thorfinnsson-Sylvan, Copenhagen 1996; 12 g3 0-0, Potapov-Fer, Perm 1993, 13 b4 =) 12... 0-0 13 0-0 (Van Vliet-Muller, London 1904) 13 ... c5 with counterplay. c) 8 cxd5liJxd5 9liJxd5 (9liJce4 e5 10 a3 i.xd2+ 11 it'xd2 it'xd2+ 12 'ifr>xd2 = Ribli-Inkiov, Baile Herculane Z 1982) 9 ... exd5 10 .ltd3 (10 a3, Stonkus-Zalys, Montreal 1950, 1O ... i.d6 11 i.d3 ifb6 12 it'c2 c5 13 ':cl h6 14 i.h4 0-015 dxc5liJxc5 =) 1O... i.d6 11 i.h4 0-0 12 0-0 l:.e8 13 a3 liJf8 with equality, Denes-Maeckelbergh, Brno 1998. d) 8 i.xf6liJxf6 and here: dl) 9 'iib3 0-0 (9 ....ltxc3 10 bxc3 0-0 11 i.d3, Funkova-Decka, Moravia 1994, ll...c5!? 12 cxd5 exd5 13 dxc5 it'xc5 =) and then: d11) 10 a3 i.d6 (W ... i.e7 11 .lte2 it'c7 120-0 b6 = Ziembinski-Augustat, Rowy 2000) 11 cxd5 exd5 12 i.d3 it'c7 13 h3 it'e7 = Ostl-Schneider, Eppingen 1988. d12) 10 i.d3 .:te8 11 0-0 (11 liJf3 c5 with counterplay, Rupp-Brezovar, Portoroz 1996) ll...e5 12 cxd5 i.xc3 13 bxc3 (Borchgrevink-Lilleoren, Norwegian open Ch 1999) 13 ... exd4 14

108

THE CAMBRIDGE SPRINGS

dxc6 dxc3 15 ttJc4 'ii'd5 16 'ii'xc3 'ii'xc6 is level. d13) 10 ii.e2 :td8 (10 ... c5, Marshall-Jaffe, New York 1913, 11 a3!? i.d7 12 :tbl ii.xc3 13 'ii'xc3 !) 11 a3 i.e7 12 0-0 i.d7 = Ziembinski-Filzmeier, Rowy 2000. d2) 9 'ii'cl 0-0 (9 ... ttJe4 10 ttJdxe4 dxe4 11 a3 i.xc3+ 12 'ii'xc3 'ii'xc3+ 13 bxc3 rJi;e7, Teichmann-Van Vliet, London 1904, 14 f3 !) 10 a3 (10 ii.d3 dxc4, Ribitzki-Hanisch, COIT. 1983, 11 ttJxc4 =; 10 ii.e2 :te8, Treybal-Skalicka, Prague 1927, 11 a3 i.e7 120-0 =) 1O... ii.e7 (1O ... i.xc3 11 'ii'xc3 'ii'xc3 12 bxc3 :te8 13 cxd5 exd5 14 i.d3 ! Velvart-C.Jensen, Arhus worn 1990) 11 'ii'c2 'ii'c7 12 ii.d3 e5 13 dxe5 'ii'xe5 14 cxd5 cxd5 =. d3) 9 'ii'c2 and now: d31) 9 ... 0-0 - 8 ii'c2 0-0 9 .Lj6

t"ilif6. d32) 9... ttJe4 10 ttJdxe4 (10:tel f5 11 ii.d3 {II f4 0-0 = Turiansky-Galia, Vienna 1947} 11...0-0 is equal, Cornelius-Shakhnazarov, San Mateo 1992) 1O... dxe4 11 ii.e2 (Shoosmith-Mtiller, London 1904; 11 a3 0-0 12:tel i.xc3+ 13 'ii'xc3 'ii'h5 = Steffers-Richardson, Viborg 1996) l1...e5 12 0-0 f5 13 a3 i.xc3 14 bxc3 !. d33) 9...b6 10 ttJb3 (10 cxd5 cxd5 11 :tel ii.a6 12 a3 i.xc3 13 'ii'xc3 'ii'xc3 14 :txc3 ii.xfl 15 rJi;xfl rJi;d7 16 rJi;e2 1/2- 1/2 Kovacs-Taskovits, Hungary tt 1999) 1O... ii.xc3+ (1O ... 'ii'a4 11 a3 i.xc3+ 12 'ii'xc3 ttJe4 13 'ii'b4 'ii'xb4+ 14 axb4 dxc4 15 ii.xc4 with minimally better chances for White, Nedeljkovic-Toth, Ljubljana 1938) 11 'ii'xc3 (II bxc3 'ii'a4 12 cxd5 cxd5 13 :tc 1 0-0 =) 11...'ii'xc3+ 12 bxc3 ii.a6 13 ttJd2 c5 14 dxc5 bxc5 =.

We return to 8 'ii'c2 (D):

B

Now, in addition to 8... 0-0 (Chapter 9), we shall consider: A: 8 •••cS!? 109 B: 8•.•e5?! 109 C: 8•..i.xc3?! 112 D: 8•.• ttJe4 113 E: 8.••dxc4 117 Of these, Lines D and E are the most popular, and they both have a substantial body of theory. Less popular are: a) 8... h6 9 i.xf6 (9 ii.f4 ttJh5 10 ii.g3 ttJxg3 11 hxg3 i.xc3 12 bxc3 = Levacher-Long, Nice 1938) 9... ttJxf6 10 i.e2 0-011 0-0 'ii'd8 (11...ii.xc3 12 bxc3 ! Rufener-Ribeiro, Tallinn U-18 Ech 1997) 12 a3 i.d6 (Klemm-Rabiega, Dresden 1996) 13 b4 !. b) 8... a6 9 a3 ii.e7 (or 9... ttJe4 10 ttJcxe4 dxe4 11 ii.h4 ii.xd2+ 12 'ii'xd2 'ii'xd2+ 13 ~xd2 ± Panczyk-Pinkas, Polish Ch 1987) 10 ii.h4 'ii'd8 11 ii.d3 dxc4 12 ttJxc4 !. c) 8... b69:tel (9ii.h4i.a61Oi.d3 c5 11 0-0 ii.xc3 12 'ii'xc3 'ii'xc3 13 bxc3 :tc8 14 :tfel rJi;e7 1/2- 1/2 Bachmayr-Wach, Austria 1997; 9 i.e2 ii.a6 10 0-0 ii.xc3 11 bxc3 :tc8 12 a4,

7 tiJd2 i.b4: MINOR LINES Havasi-Sterk, Budapest 1931, 12....i.xe4 13 .i.xe4 dxe4 14 .i.xf6lL)xf6 is level) 9 ... dxc4 10 i.xf6lL)xf6 IIlL)xc4 'ii'dS 12 lL)eS ;!; Mikhalevski-Dgebuadze, Wijk aan Zee 1998. A)

8•••cS!? This move is played fairly infrequently, but perhaps deserves renewed attention. 9 i.xf6 Or: a) 9 .i.h4 b6 10 .i.e2 0-0 11 0-0 .i.xe3 12 bxc3 (Alling-Koskinen, 1999) 12... i.a6 13 l:.fc1 l:.ac8 =. b) 9 a3 cxd4 (9 ... i.xc3 10 bxc3 b6 11 .i.e2.i.b7 12 O-O;!;) 10 exd4 dxc4 11 i.xf6 lL)xf6 12 lL)xc4 .i.xc3+ 13 bxc3 "fIe7 = Khakimov-Kozlov, Perm 1997. c) 9 dxcS 'ii'xcS!? (9 ... dxc4 10 lL)xc4 'ii'xcs 11 i.f4 lL)dS 12 .i.d6 'ii'e6 13 .i.xb4lL)xb4 14 'ii'b3 ± Kiselev-Dragomaretsky, USSR 1989; 9... i.xc3 10 'ii'xc3 ~xe3 11 bxc3 dxe4 12 lL)xe4 lL)xeS 13 f3 0-0 14 e4 .i.d7 IS .i.e2 h6 16 .i.e3;!; Szymczak-Koszorus, Sandomierz 1976) 1O.i.xf6(1Ol::tdl.i.xc311 bxc3 dxc4 12 .i.xf6 lL)xf6 13 lL)e4 lL)xe4 14 ~xe4 fS =) 1O... lL)xf6 11 a3 .i.xc3 12 'iixc3 .i.d7 13 b4 'iic6 14 'ii'd4 0-0 =. d) 9 lL)b3 and now: dl) 9... 'ii'e7 10 .i.xf6 (10 a3 cxd4 11 lL)xd4 .i.xc3+ 12 'ii'xc3, SchottTheron, e-mail 1995, 12... a6 13 l:.d1 dxc4 14 .i.xc4 bS =) 1O... lL)xf6 11 lL)xcs (11 cxdS cxd4 12 lL)xd4 lL)xdS with equality, Villegas-Berasain, Carrasco 1921) 11...i.xcS 12 dxcS 'ii'xcs 13 cxdSlL)xdS 14 .i.bS+ e7 ISlL)xdS+ 'ii'xdS 16 'iic7+ with a slight advantage for White.

109

d2) 9 ... .i.xc3+!? 10 bxc3 (10 'iixc3 'ii'xc3+ 11 bxc3 lL)e4 12 .i.f4 lL)b6 13 cxdS lL)xdS 14 lL)xcS lL)xcs IS dxeS lL)xf4 16 exf4 i.d7 with compensation) 1O ... 'iia4 11 i.xf6 lL)xf6 12 'ii'd3 (12 'ii'e2 cxd4 13 cxd4 0-0 =) 12 ... cxd4 13 cxd4 b6 =. 9•..lL)xf6 10 lL)b3 10 .i.d3 exd4 11 exd4 0-0 (alternatively, 11.. ..i.xc3 12 bxc3, Werneck de Castro-Berasain, Carrasco 1921, 12...0-0 13 0-0 .i.d7 14 l::tabl .i.c6 =) 12 0-0 dxe4 (12 ... .i.d7 13 lL)b3 'ii'e7 is equal, Tot-Zelinski, Munich 1936) 13 lL)xc4 'iVhS (Ribeiro-Cilia Vincenti, Siegen OL 1970; 13 ... 'iVe7 14 :ac1 ;!; HulakPalae, Pula 1995) 14 l::tfel l:.d8 =. 10...'iia4 Better is 1O ... i.xc3+ 11 'iixc3 (11 bxe3 'iVa4 - 9lL)b3 i.xc3+!? 10 bxc3 'ika4 11 i.xf6 fuf6) 11...'iixe3+ 12 bxe3 cxd4 13 exd4 dxc4 14 .i.xc4 b6 IS .i.bS+ 'ittd8 16 l::tc1 i.b7 =. 11 dxcS 11 exdS cxd4 12 exd4 lL)xdS with good play for Black, Weyraueh-Najditsch, Dortmund 1999. 11 .••.i.d7 11...0-0 12 cxdS lL)xdS 13 i.d3 ;!; Petran-Lugovoi, Balatonbereny 1993 . 12a3

12 cxdS lL)xdS 13 i.d3 l::te8 14 a3 .i.xc3+ IS bxe3 is slightly better for White, Veingold-Liiva, Pamu 1996. 12•.•i.aS 12 ... .i.xc3+ 13 'iixc3 ± Lauber-Parker, Berlin 1998. 13 cxdS lL)xdS 14 i.d3 l:.c8 15 0-0 i.xc3 16 bxc3 lL)f6 17 l:.tbl White has a small advantage. B)

8•.•eS?! (D)

110

THE CAMBRIDGE SPRINGS

This is a very direct attempt to solve Black's problems by striking in the centre and freeing the c8-bishop. However, it cannot be recommended. Now: Bl: 9 dxe5?! 110 B2: 9liJb3 111 B3: 9 ii.xf6! 111 Worse are: a) 9 ii.e2? exd4 10 exd4 dxc4 11 liJde4 ii.e7 12 i.d2 ~a6 13 0-00-0 is slightly better for Black. b) 9 c5 exd4 10 exd4 (GasiunasBroekman, Ve1den 1995) 10... 0-0 11 ii.e2 l:.e8 120-0 ii.xc3 13liJb3 'iia4 14 bxc3? b6

+.

B1) 9 dxe5?! Active play now secures Black equal chances. 9••. liJe4 9 ... ii.xc3 10 bxc3 (10 'iixc3 ~xc3 11 bxc3 liJxe5 12 ii.xf6 gxf6 13 cxd5 cxd5 14liJb3 ii.e6 15 liJd4 We 7 16 .l:.b1 b6 17 ii.a6 .l:.hg8 18 g3 t) 1O... liJe4 11 e6liJxg5 12 exd7+ ii.xd7 (Eslon-Barrera, Coria 1995) 13 .l:.d1!? 'fic7 14 cxd5 cxd5 15 c4 t. 10 liJdxe4 dxe411 0-0-0 Or:

a) 11.l:.c1 'iixe5 12 ii.f4 ii.xc3+ 13 'iixc3 'iVxc3+ 14 .l:.xc3 c5 (14 ... 0-0 15 ii.e2.l:.e8 {15 ... f5 16 0-0 liJb6 17 .l:.d1 ii.e6 18 b3 l:.fd8 19 l:.cc1 tHan Yee Yu-Verot, Romans 1999} 160-0 liJe5 17 .l:.d1 t S.Bjerke-AJohansen, Norwegian open Ch 1999) 15 f3 (15 .l:.c2 liJf6 16 l:.d2 ii.e6 17 ii.d6 b6 is equal) 15 ... liJf6 16 l:.b3 b6 =. b) 11 e6!?fxe612 i.h4 (12 ii.f4 0-0 13 ii.e2, Peek-De Waal, Enschede 1992, 13 ... e5 14 ii.g3 liJc5 15 a3 ii.xc3+ 16 'fixc3 'fixc3+ 17 bxc3 liJd3+ is level) 12 ... liJc5 13 0-0-00-0 14 a3 (14liJxe4 'iVxa2 15liJxc5 'iVa1+ 16 'iVb1 'iVxb1+ 17 Wxb1 ii.xc5 = Honlinger-Kashdan, The Hague OL 1928) 14 ... ii.xc3 15 'iVxc3 'fixc3+ 16 bxc3 g5 17 ii.g3 e5 18 ii.e2 t. 11 •.•0-0 Worse is 11...f6 12 exf6 'iVxg5 13 liJxe4 'iVa5 (13 ... 'iVe5?! 14 f4 ~a5 15 a3 ± Lutz-M.Gurevich, Munich 1993) 14 fxg7 (14 a3 ii.c5!? {14 ... ii.f8 15 fxg7 ii.xg7 16 liJd6+ We7 17 f4! liJf6 18 e4 liJg4 19 e5 ±} 15 fxg7 .l:.g8 16 'iVd2 'fixd2+ 17 .l:.xd2 ii.e7 18 g3 l:.xg7 19 ii.e2 t) 14 ... .l:.g8 15 ~bl!? (15 a3 ii.e7 with counterplay for Black- ECO) 15 ....l:.xg7 16 f4 ii.e7 17 ii.e2liJb6 18 liJd6+ ii.xd6 19 .l:.xd6 t. 12 liJxe4 'iVxa2 13 ii.f4 13 f4 is bad due to 13 ... h6!? (13 ... liJc5 14liJxc5 ii.xc5 15 f5, Kuhne-Limpert, COIT. 1988, 15 ... h6 16 ii.f4 'iVaI + 17 ~d2 .l:.d8+ 18 ii.d3 .l:.xd3+ 19 ~xd3 ii.xf5+ 20 ~e2 'iVxd 1+ 21 'iVxd 1 ii.g4+ +) 14 ii.h4liJc5 15liJxc5 ii.xc5 16 'iVe4 ii.g4 17 .l:.e1 ii.b4 18 ii.d3 g6 +. 13••• h6!? 14 ii.e2 Or: a) 14 g4 'iVaI + 15 'iVb1 'iVa5 16 g5 h5 =.

7 tiJd2 i.b4: MINOR LINES b) 14 'ii'd3 'ii'a5 IS e6 fxe6 16 .i.d6 ttJeS 17 .i.xeS 'ii'xeS =. 14..•'ii'al + 15 'ii'bl 'ii'aS The game is level.

111

10••• ttJxd5 11 a3 exd4 12 'ii'e4+ 12 exd4 .i.xc3+ 13 bxc3 0-0 14 .te2 l:r.e8 = Neurohr-Kiebel, 2nd Bundesliga 1993.

12•••~f8 B2) 9 ttJb3 This move, a common theme in these lines, appears sufficient to give White an edge. 9...'ii'c7 9 ... 'ii'a4 is experimental, and cannot be recommended. 10 cxd5 Other moves: a) 10 a3 .i.xc3+ (or 1O... dxc4!? 11 .i.xc4 .i.d6 12 l:.dl h6 13 .i.xf6 ttJxf6 14 ttJd2 0-0 =) 11 bxc3 0-0 12 cxdS cxdS 13 .i.d3 (Gervais-Willernze, Hengelo jr 1996) 13 ...ttJe4 14.i.h4 t. b) 10 .i.e2 and now: bl) 1O...ttJe4 11 .i.h4 exd4 12 ttJxd4 O-O!? (12 ... 'ii'aS 13 0-0 .i.xc3 14 cxdS cxdS IS bxc3 'ii'xc3 16 'ii'dl with compensation - Krarnnik) 13 0-0 (13 cxdS .i.xc3+ 14 bxc3 cxdS =) 13 ... .i.xc3 14 bxc3 ttJeS =. b2) 1O... dxc4 11 .i.xc4 0-0 12 0-0 (12 0-0-0 as 13 dxeS 'ii'xeS is equal, Ginsburg-Shipman, New York 1991) is a little better for White according to Kramnik but we feel that Black has sufficient counterplay: b21) 12 ... .i.d6?! 13 h3l:.e8 (13 ... a6 14 i..d3 h6 IS i..h4 l:!.e8 16 l:r.adl t Kinsman-Flear, Toulouse 1996) 14 l:.ad 1 exd4 IS ttJxd4 .i.eS 16 f4 .i.xd4 17 l:.xd4 l:!.xe3 18 l:!.fd 1 ttJf8 19 fS ± Kramnik-Kamsky, Linares 1993. b22) 12 ... h6!? 13 .i.h4 (13 .i.xf6 ttJxf6 14 ttJe4 ttJxe4 IS 'ilVxe4 .i.d6 =) 13 ... .i.d6 14 .i.g3 ttJhS with counterplay.

12 .. .'ii'eS 13 'ii'xeS+ ttJxeS 14 exd4 ttJxc3 IS dxeS ttJe4+ 16 axb4 ttJxgS 17 bS t. 13 'ii'xd4 .i.xc3+ 14 bxc3 'ii'e5 15 'ilVxe5 ttJxe5 16 c4 ttJe7 17 ttJd4 White's bishop-pair gives him the better chances.

B3) 9 i..xf6! Now Black has serious problems. 9•••ttJxf6 (D)

10dxe5 10 ttJb3 'ilVc7 11 a3 exd4 12 ttJxd4 .i.xc3+ 13 'ilVxc3 0-0 = Tatai-Mariotti, Rome 1977. 10...ttJe4 11 cxd5! Or: a) 11 ttJdxe4 dxe4 12 a3 0-0 is equal, Gilg-Schmitt, Bautzen 1929. b) 11 ttJcxe4 dxe4 12 a3 .tg4 13 .i.e2 .i.xe2 14 ""xe2 .i.xd2 IS 'ilVxd2 'ii'xeS leads to equality, Franco-Garcia, Bogota 1992. 11 .•• ttJxc3

112

THE CAMBRIDGE SPRINGS

1l...i.xc3 12 bxc3 cxdS 13 %:tel i.fS 14 i.d3 ±. 12 bxc3 i.xc3 13 l:tc1 i.xd2+ 13 ... i.b4 14 dxc6 ±. 14 ~xd2 ~xd2+ 15 c;i;>xd2 cxd5 16 %:tc7 a617 i.d3 b518 l:thc1 White has a large advantage.

C) 8••.i.xc3?! Black should not make this exchange voluntarily unless there is a very good reason. 9bxc3 9 ~xc3 'tlVxc3 10 bxc31Ob6 (10 ... 0-0 11 cxdS exdS 12 i.d3 l:.e8 13 c4 h6 14 i.f4;t Ordonez-Aguiar, Caracas 1999) 11 a4 dxc4 12 e4 ;to 9...dxc4 Or: a) 9...1Oe4 10 lOxe4 dxe4 (FawcettSergeant, Southport 1905) 11 i.h4! cS (1l...eS 12 i.e2 0-0 13 0-0 exd4 14 cxd4 ~fS IS cS intending i.c4 ±) 12 l:.bl fS 13 i.e2 0-0 140-0 ±. b) 9... h61O i.h4 (10 i.f4 0-0, Coursaget-Lierville, Gonfreville 1999, 11 i.e2 l:te8 120-0 eS 13 i.g3 ;t) 10... 0-0 11 i.d3 ~c7 12 i.g3 ;t KurtzmanKirzner, Parsippany 2001. 10 i.xf61Oxf6 lllOxc4 ~c7 Or 1l...'ii'dS 12 f3 0-0 13 i.d3 (13 e4 ~d7 14 eSlOe8 IS i.d3 h6 16 ~e2 ± Smagin-Raicevi6, Moscow 1986) 13 ... ~gS (13 ... h6 140-0 lOd7 IS e4 ± Mira-Jamal, Istanbul worn OL 2000) 140-0 bS IS f4 ± Schrnitz-Hielscher, Schleswig-Holstein 1998. 12e4 Alternatively: a) 12 g3 0-013 i.g2 b6 140-0 i.b7 = Galicek-Serdamba, Hradec Kralove 1997.

b) 1210eS lOd7 13 1Of3 cS (HailuFesalbon, Istanbul OL 2000) 14 i.d3!? lOf6 IS 0-0 b6 1610eS o-o;t. c) 12 i.e2 cS!? 13 ~a4+ i.d7 14 'tlVa3 b6 IS 0-0 0-0 16 l:.fbl ;to d) 12 i.d3 and then: dl) 12 ... lOd7 13 0-0 cS 14 'i!i'e2 was played in Knudsen-Brooke, Lincoln 1986, and now 14 ... 0-0 IS %:tfbl %:tb8 16 'tlVhS fS 17 a4 is just slightly better for White. d2) 12 ... b6 13 e4 i.a6 14 eS i.xc4 IS i.xc4;t Visentin-Rossi, Lombardia 1991. d3) 12... 0-0 13 g4 (13 e4 - 12 e4 0-0 13 i.d3; 13 lOeS cS - 12. .. c5 13 lOe50-0; 13 h3 h6 140-0 cS IS l:tabl b6 1610eS i.b7 17 l:tfdl =; 13 0-0 cS 1410eS - 12. .. c5 13 lOe5 0-0 14 0-0) 13 ... h6 1410eS with an initiative. d4) 12 ... cS and here: d41) 13 a4 b6 14 e4 i.a6 IS eS ;t Van Dijk-Van Tilborg, corr. 1983. d42) 13 'tlVe2 bS 141Od2 c4 IS i.c2 i.b7 160-0 lOdS =. d43) 13 h3 bS 1410eS c4 (DunkelGrundt, Fredeburg 1994) IS i.e21Od7 16 lOxd7 i.xd7 17 i.f3 ;to d44) 13 0-00-0 14 a4 b6 (14 ... h6 IS %:tfbl i.d7 16 "iVb2 ;t A.S0rensenStentebjerg, corr. 1982; 14 ... cxd4 IS cxd4, Tallaksen-Amgrimmsson, Gausdal 1999, IS ...b6!? ;t) IS lOeS i.b7 16 f3 l:.ac8 =. d4S) 13lOeS 0-0140-0 (14 %:tel b6 IS g4 i.b7 16 l:.gl g6 =Panterre-Gaffar, Novi Sad OL 1990) 14...b6 ISl:bcl (IS 'i!i'e2 i.b7 16 f3 l:.ac8 is equal, Espinola-Yanofsky, Buenos Aires OL 1939) IS ... i.b7 16 'tlVe2 (16 %:tfdl!? ;t) 16 ... %:tac8 with an equal position, Havasi-Thomas, Ujpest 1934. 12.••0-0 13 i.d3

7 l'iJd2 iLb4: MINOR LINES 13 eS!? ttJe8 (13 ... ttJdS 14 i.d3 fS IS 0-0 cS 16 ttJd6 i.d7 17 l:tfbl ±) 14 i.d3 fS IS exf6 ttJxf6 16 0-0 cS 17 'iVe2 cxd4 18 cxd4;1; / ±. 13.•. b5 13 ... h6 14 0-0 (14 eS!?) 14...bS!? (14 ... cS IS eS ttJdS 16 l:tael i.d7 17 ttJd6 ± Mellem-Synnestvedt, Norwegian Ch 1999) IS ttJd2 cS 16 ':fel c4 17 i.e2;1;. 14 ttJd2 e5 14 ... h6 IS eS ttJdS 16 ttJe4 f6 17 exf6 ttJxf6 18 ttJxf6+ l:txf6 19 0-0 cS 20 'iVe2! a6 21 a4! is much better for White, Mikhalchishin-Mchedlishvili, Baturni Echt 1999. 15 ttJf3 ttJd7 IS ... exd4 16 cxd4 i.g4 17 ttJeS l:tac8 18 ':cl ;1;. 160-0 J:tb8 17 a4 a618 J:tfdl White has a small advantage.

0) 8...ttJe4 This move was frequently used in the early days of the Cambridge Springs. However, it is not trusted nowadays. 9 ttJdxe4 9 ttJcxe4 (this looks a little awkward since the d2-knight will be pinned, but it is not easy for Black to exploit this fact) 9 ... dxe4 10 i.h4 fS (lO ... hS!?) 11 h3 0-0 (Saljova-Vechet, Brno 1994; l1...eS!?) 12 a3 eS 13 cS;1;. 9 ...dxe410 i.h4 (D) 10 i.f4 allows 1O... eS. Now: Dl: 10...f5?! 113 D2: 10...0-0 114 The latter is without doubt the main line. Alternatively:

113

B

a) 1O... cS 11 i.e2 gS 12 i.g3 cxd4 13 exd4 fS 14 f4;1; 0gaard-Beutelhoff, Dortmund 1975. b) 1O ... eS 11 i.e2 (11 a3 fS 12 0-0-0 i.xc3 13 'iVxc3 'iVxc3+ 14 bxc3 is slightly better for White, FridsteinTrupan, Moscow 1949) 11...i.xc3+ (or l1...fS 12 0-0 exd4 13 exd4 0-0 14 f3 ;1; Sjoberg-Pandavos, Graz 1981) 12 'iVxc3 'iVxc3+ 13 bxc3 ;1; Nizynski-Gronroos, COIT.1996. c) 10... i.xc3+ 11 bxc3 b6 (l1...f6 12 l:tel ttJb6 13 i.e2 eS 14 'iVxe4 ± Danilov-Tarakanov, PiirnuITallinn 200 1) 12 i.e2 i.b7 13 0-0 ± Ztiger-Costa, Chiasso 1991. d) 1O... hS 11 h3 (11 f3 exf3 12 gxf3 gS 13 i.g3 eS 140-0-0;1; Cichy-Boettcher, Germany 1981) l1...gS 12 .i.g3 fS 13 h4 g4 14 i.e2 ttJf8 IS a3 (IS .i.eS :h7, Retter-Barabas, COIT. 1996, 16 a3 ;1;) IS ... ttJg6 16 0-0-0 ± Csibor-Barabas, COIT. 1996.

01) 10...f5?! This clumsy move leads to problems. ll.i.e2 11 :d 1 0-0 12 a3 i.xc3+ 13 'iVxc3 'iVxc3+ 14 bxc3 ;1; Reiser-Schricker, Sailauf 1992.

114

THE CAAIBRIDGE SPRINGS

11...0-0 12 0-0 liJf6 12... ~xc3 13 bxc3 liJf6 14 ~g3!? (14 f3 exf3, Arnesson-Cederlind, COIT. 1980, 15 ~xf3;t; 14 :ab1, Hashim-Ak Shariful, Kuala Lumpur 1993, 14...e5!? ;t / ±) 14...b6 15 :ab1 ±. 13~g3

Or: a) 13 ::tad1 ~d6 14 a3;t / ± Bolbochan-Bensadon, Buenos Aires 1933. b) 13 f3 exf3 14 i.xf3 e5 15 ~e1 ;t I.Rabinovich-Lisitsyn, Leningrad Ch 1932. c) 13 a3 i.d6 14 f3 exf3 15 ~xf3 ;t Rodriguez Hurtado-Boettner, Buenos Aires OL 1939.

13••:iid8 13 ... ~e7 14 a3 'ii'd8 15 :tad1 ± Bogoljubow-List, Berlin 1928. 14:adl 14 f3 exf3 15 i.xf3 i.d6 16liJe2;t / ± Pirc-Przepiorka, Frankfurt 1930. 14••• ~d6 F.Portisch-Van Scheltinga, Wijk aan Zee 1973. White should now play 15 ~xd6 'ii'xd6 16 c5 ±. 02) 10.••0-0 11 i.e2 11 a3 ~xc3+ (11...e5 12 i.e2 {12 ::tc1 ~xc3+ 13 'ii'xc3 'ikxc3+ 14l:hc3 ;t Sofrevski-lanosevic, Umag 1972} 12... exd4 13 exd4 i.xc3+ 14 'ii'xc3 'ii'xc3+ 15 bxc3 gives White a slight advantage, Nickoloff-Ipek, Thessaloniki OL 1988) 12 'ii'xc3 'ii'xc3+ 13 bxc3 e5 14 i.e2 liJb6 (14 ...:e8 15 Wd2 ± Hort-lanosevic, Madonna di Campiglio 1974) 15 c5liJd5 16 Wd2 exd417 cxd4 ;t Boleslavsky-Taimanov, Gagra 1953. 11 ...e5 It is logical for Black to strike in the centre.

1Lg5 12 i.g3 f5 13 f4 (13 f3 f4 14 i.f2liJf6 15 O-Oexf3 16 i.xf3 ± Flamberg-Romanovsky, Baden-Baden 1914; 13 0-0 f4 14 exf4 gxf4, Moore-Wood, COIT. 1983, 15 ~h4 f3 16 i.dl e5 17 liJxe4 ±) 13 ... exf3 14 gxf3 e5 (Debarnot-Storti, Buenos Aires 1968) 15 :gl Wh8 16 0-0-0 i.e7 17 ~el is much better for White. 12 0-0 (D)

B

Now Black must choose carefully: D21: 12...f5?! 114 D22: 12...exd4 116 Or 12 ...i.xc3 13 bxc3 f5, and now: a) 14 ::tabl (Trinos-Holze, Rowy 2000) 14... liJb615 ::tb3 :f7 16 c5liJd5 17 c4liJc7 18 'ikb2 liJe6 19 f3 ;t. b) 14 f3 exf3 15 ':xf3 e4 16 :f2 liJf6 17 i.g3 ;t Burn-Marco, Berlin 1897. c) 14 'ii'b3 (Sandum-Strand, Kristianssund 1983) 14 ... c5!?;t. d) 14 :fdlliJf6 15 i.g3 (15 'ikb3!? ;t / ±) 15 ... exd4 16 cxd4 (SchermerBosma, Haarlem 1986) 16 ... i.e6 17 :abl :f7 18 d5 ;t.

021) 12•..f5?!

7 liJd2 i..b4: MINOR LINES This ambitious move does not work well. Now: 0211: 13 a3 115 0212: 13 c5 115 0213: 13lLlxe4! 116 All these moves are good, but the last gives Black especially tough problems. Other moves: a) 13 li'b3 exd4 14 c5+ (14 exd4 i.xc3 15 bxc3 c5 16 f3 e3 17 f41:te8 18 i.h5 ~ Gormally-R.Pert, British League (4NCL) 1997/8) 14... 'ith8 15 exd4 b6 16 i.e7 1:e8 17li'f7~. b) 13 f3 exf3 14 1:xf3lLlf6 (14 ... e4 15 .l:.f2 is slightly better for White Burn-Teichmann,Ostend 1905) 15 i.el (15 l:tafl i.e6 16 c5 i.xc3 17 bxc3, Danner-Brumen, Budapest 1994, 17...e4 18 .l:.3f2 lLld5 =) 15 ... exd4 16 exd4 i.e6 17 l:tdl 1:ae8 18 a3~. c) 13 d5!? cxd5 (13 ... h6!? ±) 14 cxd5 b6 15 lLlxe4 fxe4 16 a3 +- i.c5 17 b4 i.xb4 18 axb4 li'xb4 19li'c6 1-0 Garcia Ilundain-Rojo Gomez, Cala Galdana 2001.

0211) 13 a3 i.xc314 bxc3 14li'xc3li'xc3 (14 ...li'c7 15 c5 1:e8 16 1:ad 1 exd4 17 1:xd4 ± / +- Rubinstein-Mieses, Lodz 1905) 15 bxc3 h6 (15 ...1:f7 16 c5 lLlf8, Fenoglio-Bolbochan, Rio de Janeiro 1938, 17 dxe5!? i.e6 18 .l:.abl .l:.d7 19 l:tb2 is slightly better for White) 16 i.e7 (Van Dongen-Ruch, Challes 1990) 16...1:f7 17 i.d6 exd4 18 cxd4lLlf6 19 1:abl ~. 14...lLlb6 Instead: a) 14...1:e8 15 f3 exd4 16 cxd4lLlf8 (Friedman-Tartakower, London 1946) 17 c5 ± / +-.

115

b) 14... c5 15 f3 (alternatively, 15 1:tadl, Hort-Modr, Rimavska Sobota 1974, 15 ... li'a6!? with counterplay for Black) 15 ... exf3 16 .ltxf3 e4 17 .lte2 lLlf6 18 .ltg3 ~ / ±. c) 14... lLlf6 15 .l:.fdl (15 i.g3 f4 16 exf4 exd4 17 cxd4 .ltf5 18 li'b3 ± Seitz-Rosselli, Trieste 1923) 15 ....lte616 li'b2! (Z.Nilsson-M.Rantanen, Saltsjobaden tt 1948) 16 ... exd4 17 cxd4 b618 li'b4 ±. d) 14... h6 15 .lte7 (15 f4 exf4! 16 exf4lLlb6 17 c5 lLld5 18 i.el li'c7 19 li'eI i.e6 =) 15 ... 1:f7 16 i.d6 exd4 17 cxd4lLlf6 18 1:tbl .lte6 19 .lte5 ~ / ±. e) 14... li'c7 15 f3 (15 c5, TempleMinaya, Peruvian Ch 1999, 15 ... lLlf6 16 1:fd 1 exd4 17 cxd4 i.e6 18 .ltg3 li'f7 19 1:tabl ~) 15 ... exf3 16 1:xf3!? gives White a slight advantage. 15 i.e7 .l:.f7 16 i.d6 .lte6 Pastor-Jirovsky, Brno 1990. White can now obtain a small advantage with 17 c5.

0212) 13 c5 exd4 Or 13 ... i.xc3 14 bxc3 lLlf6 (14... b6 15 li'b3+ ~h8 16 .lte7 ± intending li'f7, Salwe-Przepiorka, Nuremberg 1906; 14... exd4 15 cxd4lLlf6 16 .ltc4+ ~h8 17 1:ttbl ± Kragelj-Kiss, Finkenstein 1995) 15 .ltc4+ ~h8 16 .ltg3 f4 17 exf4 exd4 18 cxd4 ± Samisch-Koch, Swinemiinde 1930. 14exd4 Or 14 i.c4+ <;t>h8 15 exd4 i.xc3 16 li'xc3li'xc3 17 bxc3lLlf6 18 .l:.abl (18 i.xf61:txf6 19 1:tabl ~ Zoler-Brumen, Schwarzach 1997) 18 ...lLld5 19 i.xd5 cxd5 20 c4 ~ Leonhardt-Mieses, Barmen 1905. 14.••i.xc3

116

THE CAMBRIDGE SPRINGS

14... ttJf6 (F.Portisch-Carl, Hamburg 1981) IS f3! ±. 15 bxc3 ttJf616 f3 e3 17 ~g5 ttJd5 18 c4 'ifc3 19 'ifxc3 ttJxc3 20 ~d3 Now 20 ...:e8? 21l:.fel gave White a large advantage in Kavalek-Ianosevic, Netanya 1971, which concluded 21 ... b6 22 a4 bxcS 23 dxcSl:.b8 24 .l:.a3 1-0. 20 ... f4 21 .l:.fc1 ttJa4 22 ~e7 :f7 23 ~d6 is also good for White.

0213) 13 ttJxe4! fxe414 a3 exd4 (D) 14 ... ~d6 IS b4 ± Gotthilf-I.Rabinovich, Leningrad 1925.

w

15 axb4 'ifxb4 IS ... 'ifeS 16 ~g3 +- Galyas-Heinlein, Budapest 2001. 16 'ifxe4 16 exd4 ± Luig-Schneider, NiederHilbersheim 2000. 16••• ttJc517 ~e7 ttJxe418 ..txb4 c5 19 ..tf3 ':e8 20 ..txe4 White has a clear advantage according to the old ECO.

022) 12•••exd4 Now White can achieve an edge, but nothing more serious than that.

13 ttJxe4 13 exd4 is also good: a) 13 ... ~xc3 14 bxc3 (14 'ifxc3 'ifxc3 IS bxc3 b6 16 f3l:.e8 17 .l:.fel ! Sale-Zelcic, Budapest 1996) 14...':e8 IS f3 (1S ':ael ttJf8 16 f3 ~fS 17 fxe4 ..txe4 18 'ifb3 ! Montignies-Bashilin, Essen-Borbeck 2000; IS .:tfel ttJb6 16 .:tabl ~e6 17 cS ttJdS 18 c4! Papadopoulou-Worek, Khalkidhiki girls U14 Ech 2000) IS ... exf3 16 ':xf3 (16 ..txf3, Belotelov-Kiselev, Budapest 1997, 16... ttJb6!? 17 cS ttJc4 18 %%.ael !) 16 ... ttJf8 17 ..td3 ~g4 18 %tf2 ! Haik-Taruffi, Catanzaro 197S. b) 13 ... gS 14 ..tg3 fS and now: bl) IS h3 f4 16 ..th2 ..txc3 17 bxc3 ttJf6 18 %tfel b6 = Bonoldi-Benassi, COIT. 1999. b2) IS f3 ..txc3 16 bxc3 f4 17 ..tel e3 18 cS 'ifd8 (18 ... ttJf6 19 'ifb3+ '1i;g7 20 c4 ! Daniuszewski - Ilyin-Zhenevsky, USSR Ch 1920) 19 'ifb3+ gives White a slight advantage, A.Borg-Bergmans, Eupen ECC 1997. b3) IS f4 and then: b31) IS .....txc3 16 bxc3 (16 'ifxc3 'ifxc3 17 bxc3 g4 = Belichev-P.WilIiams, Budapest 1999) 16... g4 and here: b311) 17 h3 hS 18 hxg4 (18 ..th4 ttJb6 19 %tfbl ':f7 20 a4 ..te6 21 :b4 ttJc8 22 %tabl 'ifc7 23 'ifd2 b6 24 cS ttJe7! is unclear, Kiselev-V.Sergeev, Gdynia 1992) 18 ... hxg4 19 ..th4 (Farago-Medved, Ljubljana 2001; 19 'ifb3!? !) 19... ttJb6!? 20 cS ttJdS =. b312) 17..th4ttJb618.l:.fbl..te619 .:tb4! Van Wely-Weemaes, Gent 1988. b32) IS ... g416 ttJdl ttJf617 ttJe3!? (17 a3 ..te7 18 ~el 'ifc7 19 ..tc3 ..te6 20 ttJe3 = Budo-I.Rabinovich, USSR Ch 1937) 17 .....te6 18 %tadl ..te7 19 ..th4 .:tfe8 20 a3 !.

7 tiJd2 JL.b4: MINOR LINES 13•••dxe3 14 fxe3 14 a3 exf2+ (14....id2 IS b4, KIawonn-Diebig, Oberhof 1999, IS ...'iWeS 16 .id3 exf2+ 17 .ixf2 .if4 18 g3 .ih6 ;t) IS .ixf2 .ie7 (Castillo LarenasPerea, Mar del Plata 1928) 16 cS!? ttJeS 17 .ig3 ttJg4 18 .i.f4 with more than sufficient compensation. 14•••f515 a3 .ic516 ttJxc5 fixeS 17 i.g5 17 'iWc3 :e8 18 .igS h6 19 .if4 (19 b4 fieS 20 'iWxeS ttJxeS 21 .if4, Marinelli-Genovese, Catania 1995, 21...gS 22 .ig3 ttJg6 =) 19 ... gS 20 b4 fie7 21 i.hS gxf4 22 .ixe8 fixe8 23 exf4 as 24 :ael fif7 ;t. 17••• ttJf6 18 b4 fie7 Sorsa-Kjartansson, Gausdal 1998. White can now play 19 cS h6 20.if4 :e8 21 .ic4+ .ie6 22 .id3 ;t.

117

pawn, Thorvaldsson-Macht, Hamburg 1930. 9••. ttJxf6 (D) 9... gxf6 10 ttJxc4 figS (l0 ... 'ii'c7 11 .i.e2 fS 12 0-0 b6 13 a3 .ie7 14 f4 .i.b7 IS :adl ± Shoosmith-Stichting, Ostend 1907) 11 a3 .ixc3+ 12 'ii'xc3 ± Richter-Zweschper, Bergen Enkheim 1997.

E)

8...dxc4 This has some features in common with 7... dxc4, which we examined in the previous chapter. 9 i.xf6 Worse is 9 .ih4 bS (9 ....ixc3 10 'iixc3 'iixc3 11 bxc3 bS, Alvarez-Moreno, Oviedo 1999, 12 a4 a6 13 .ie2 0-0 14 i.f3 ttJdS +) 10 i.e2: a) 1O....ib7 11 0-0 and then: al) 11...'iib6 12 :fbl (Stanie-Rosandie, Zagreb 1997; 12 b3!?) 12 ... cS!? 13 dxcS 'iixcS 14 a3 i.a5 +. a2) 11...0-0 12 a4 fib6 13 b3 cxb3 (Coriat-Fittante, France 2000) 14 ttJxb3 a6+. b) 1O... ttJdS 11 0-0 (l1....ixc3 12 bxc3 cS + / + L.Williams-A.Borg, British League (4NCL) 1997/8) 12 0-0 ttJxc3 13 bxc3 i.a3 14 :cel ttJb6 does not give White compensation for the

:c1

At this point White has a familiar choice: E1: 10.ixc4 117 E2: 10 ttJxc4 119

El) 10.ixc4 As usual, this is somewhat less logical than the recapture with the knight. Now: Ell: 10•.• ttJd5 118 E12: 10•..0-0 118 E13: 10•.•e5 119 The last of these three moves is the most effective. Other moves: a) 1O... 'iic7 was played in SchwertHonecke, Uberlingen 2000, and now 11 0-0 0-0 12 ttJce4 ttJxe4 13 ttJxe4 .i.e7 14 f4 is slightly better for White.

118

THE CAMBRIDGE SPRINGS

b) 1O... 'iVg5 11 0-0 ttJd5 12 ':'ael 0-013 f4 'tlVd8 14 ttJce4!? f5 15 a3 i.e7 16 ttJf2 ttJb6 17 i.d3 'iVd6 18 ttJf3 ;t c) 1O... i.d7 11 0-00-0 12 a3 i.e7 (Schuck-Navarro, Germany 1997) 13 ttJce4 t. d) 1O... c5!? 11 0-0 cxd4 12 exd4 i.xc3 13 bxc3 i.d7 14 ttJb3 'iVc7 =Alekhine-Eddy, Mexico City simu11929.

Ell) 10.•.ttJd5 11 ':'c1 0-0 l1...ttJxc3 12 bxc3 i.e7 (12 ... i.a3 13 ':'d1 ~g5 140-00-0 15 f4 'iVg6 16 i.d3 t / ± Rebnord-Rodriguez Hurtado, Buenos Aires OL 1939) 13 0-00-0 14 i.d3 h6 (14 ... g6 15 e4 t Lammi-Nymans, Jyvaskyla 1993) 15 e4 t Morawiec-Jozwik, Krynica girls 1998. 12 i.d3 Or 120-0: a) 12... ttJxc3 13 bxc3 i.a3 14 ':'b1 (Beerbaum-Kopcke, Germany 1996) 14 ...'iVh5 t. b) 12 ... l:!.e8 13 ttJf3 i.f8 14 ':'fd 1 a6 15 ttJe5 t Sipic-Zovko, Pula 2001. c) 12 ... 'tlVc7 (Agrawal-Taniskidou, Dubai worn OL 1986) 13 a3 i.d6 14 ttJf3 ttJxc3 15 'tlVxc3 i.d7 16 i.d3 gives White a slight advantage. d) 12 ... i.d7 13 ttJb3 (13 i.d3 h6 14 ttJb3 'tlVd8, Matsokina-Stom, Moscow worn 1998,15 l:!.fd1 t) 13 ... 'tlVd8 (MundIe-Merino Mejuto, Manila OL 1992) 14 ttJc5!? t. 12...h6 13 0-0 'tlVd8 14 ttJf3 i.d6 15 a3 White has a small advantage, Sondermann-Gressnich, Bochum 1990.

E12) 10...0-011 a3 Or 11 0-0, and now:

a) 11. .. 'iVc7 (Gomer-Stech, Svetla nad Sazavou 1998) 12 ttJce4 t. b) 11...'tlVh5 12 i.e2 'tlVh6 13 ttJce4 t Hellwig-Hanisch, Dortmund 1998. c) 1l...i.xc3 12 'ifxc3 'ifxc3 13 bxc3 l:!.e8 14 l:!.fd1 t Muller-Borstel, Minden 1961. d) 1l...i.e7 12 i.d3 'tlVd8 13 l:!.fd1 b6 14 ttJce4 t Busch-Schimmelpfennig, Deidesheim 2000. e) 11...l:!.d8 12 i.d3 (12 a3 i.e7, Tapia-Guimard, Vina del Mar 1945, 13 ttJde4!? t) 12... h6 13 a3 i.e7 14 b4 'iVc7 15 ttJf3 t Apscheneek-Weenink, The Hague OL 1928. f) 11...ttJd5 was played in the game Savina-Khazhomia, Khalkidhiki 2001, and now 12 i.e2 ttJxc3 13 bxc3 i.e7 14 l:!.ab 1 .l:.d8 15 .l:.fd 1 is slightly better for White. g) 11...e5 and then: gl) 12 a3 and here: gIl) 12 ... i.d6 13 ttJde4 (13 b4 'iVc7 14 dxe5 i.xe5 15 ttJf3 i.d6 = WemerLuig, Idar-Oberstein 2000) 13 ... ttJxe4 14 ttJxe4 i.e7 15 b4 'iVc7 = HorvathPal, Hajduboszormenyi 1999. g12) 12 ... i.e7 13 b4 (13 i.e2 exd4 14 ttJb3, Pedersen-Moen, Gausdal 1992, 14 ... i.f5!? 15 i.d3 i.xd3 16 'ifxd3 'iVe5 +) 13 ... 'iVc7 14 ttJf3!? (14 ttJe2 i.d6 15 h3, Gersho-Zalys, Montreal 1970, 15 ... a5! +) 14... i.d6 15 ttJe4 ttJxe4 16 'tlVxe4 exd4 17 ttJg5 g6 18 'tlVh4 h5 +. g2) 12 dxe5 'iWxe5 13 ttJf3 'ife7 (or 13 ... 'tlVh5 14 ttJe4 ttJxe4 15 'tlVxe4 = Nguyen Van-Gay, Paris 1998) 14 h3 i.e615 i.xe6 'tlVxe6 16 ttJd4 liz_liz Gohler-Strizak, Bundesliga worn 1994/5. g3) 12 ttJb3 'fic7 13 h3 (13 a3 i.d6 14 dxe5 i.xe5 15 h3 b6 =; 13 ttJe4 ttJxe4 14 'fixe4 exd4 15 ttJxd4 i.d6 =

7 tDd2 i.b4: MINOR LINES Decotte-Wohlers Annas, French Cht 1998; 13 ~d3 exd4 14 li'lxd4 .td6, Feil-Rehberg, Pinneberg girls 1996, IS h3.:td8 16 .:tfd1 'ile7 is equal) 13 .. .l:le8 (13 ... aS!? 14 .:tadl a4 ISli'lc1 .td6 16 li'lle2 .:te8 with counterplay) 14 ':ac1 'ile7 intending ... as =, Fajman-Jirovsky, Czechoslovak Ch 1992. 11 ••..te7 11 ... li'ldS (Pons-Gomez, Tarragona 1994) 12li'lce4 fS 130-0 .te7 14li'lc3 t. 12.tdJ 12 .te2 'ilc7 13 li'lc4 ~d7 14 b4 (Pomar-Ribeiro, Estoril19S0) 14...bS!? ISli'leS as with counterplay. 12•••'ilh5 13 li'lce4 li'lxe4 14 li'lxe4 f5 15 li'lg3 'ilg6 16 0-0 ~d6 17 ~c4 .td7 White has slightly better chances.

119

12••• ~xc3 13 'ilxc3 'ilxc3 14 bxc3 li'lg4 15 li'lf3 .:teS 16 .:td1 16 ~b3 .tfS 17 li'ld4 ':xeS 18 ':'d1 .:tae8 19 li'lxfS ':xfS 20 0-0 li'lf6 21

=.

.:td4~f8 16.•• ~f8 17 .tb3 li'lxe5 IS li'lxe5

':'xe5 19 ':dS+ lieS 20 ':'d4 The position is level.

E2) 10 li'lxc4 (D)

B

El3) 10.•.e5 Black logically strikes in the centre, exploiting the fact that there is no white knight on c4. 11 'ilb3 Alternatively: a) 11 dxeS 'ilxeS 12 'ilb3 .txc3 13 'ilxc3 (13 .txf7+? ~f8 14 bxc3 bS IS li'lf3 {IS a4!? 'ile7 16 axbS 'ilxf7 17 bxc6 gives White some compensation} IS ... 'ile7 16li'lgS h6 17li'le6+ 'ittxf7 18 li'lc7+ .te6 -+ old ECO) 13 ... 'ilxc3 14 bxc3 'ftie7 =+= Bogoljubow-Euwe, Holland 1929. b) 11 li'lb3 'ilc7!? 12 lId1 (120-0 exd4 13 li'lxd4 0-0 =) 12... 0-0 13 0-0 .td6 14 dxeS .txeS =. 11 ...0-0 12 dxe5 12 0-0 exd4 13 exd4 .td6 14 li'lde4 (Wissemann-Mallow, Bingen 1990) 14 ...'ild8 IS .:tfel .tc7 16 lIad1 bS =.

Now Black has a wide choice, but as before the best square for the queen is probably c7: E21: 10•.•'ilg5 119 E22: 10•••'ilh5 120 E23: 10•••'ildS 121 E24: 10••• ~xc3+ 121 E25: 10•••'ild5 122 E26: 10...'ilc7 122

E2l) 10...'ilg5 On this square the black queen is more of a target than an inconvenience for White. 11 O-O-O!? Other moves: a) 11 g3 'ildS 12 .:tg1 b6 13 li'leS .tb7 14 .tg2 'ild6 IS a3 .txc3+ 16

120

THE CAMBRIDGE SPRINGS

bxc3 = lanevska-Teh, Szeged girls U18 Ech 1994. b) 11 f4 1i'h4+ (or 1l...1i'h6, Von Doery-Beutum, Vienna 1928, 12 a3 J.e7 13 i.d3ltJd5 140-00-015 1:.f3 t) 12 g3 'ti'h5 13 J.g2 0-0 140-0 1:.d8 15 1:.adl (Euwe-Olland, Netherlands tt 1924) 15 ... J.e7 16 J.f3 t. c) 11 ltJe5 ltJd5 and here: el) 12 1i'd2 0-0 13 a3 J.a5 (Stumberger-A. Martinez, Zagan girls Wch 1997) 14ltJf3 =. c2) 12 h4 1i'd8 13 J.d3 h6 14 a3 J.e7 15ltJe4 'ifa5+ 16 'lltfl gives White a slight advantage. c3) 12 a3 (Birnbaum-Scholl, Germany 1997/8) 12 ... J.a5!? 13 b4 J.c7 14ltJxd5 i.xe5 15 ltJc3 J.c7 16 f4 t. d) 11 a3 and then: dl) 1l...J.xc3+ 12 bxc3 0-0 13ltJe5 (13 f4 1i'd5 14 J.d3 b6, PesztericzMitlasovszki, Zalakaros 1995, 15 e4! 'ifh5 160-0 t Tsesarsky) 13 ... ltJd7 14 h4 (14 f4, Linskiy-Milicevie, Quebec Cht 1998, 14...1i'h6 t) 14... 'ife7 15 J.d3 t. d2) 11 ... J.e7 and now: d21) 12 ltJe4 ltJxe4 13 1i'xe4 'ifh6 14 ltJe5 (Velasco-Vaca, Mexico City 1975) 14... 0-0 15 J.c4 l:.d8 16 h4 t intending g4. d22) 12 h3 0-0 (Raber-Trumpf, Biel 1995) 13 b4 t. d23) 12 J.d3 'ifxg2 13 0-0-0 (Lehmann-Roth, Germany 1996n) and now 13 ... 'ifh3! 141:.dgl 0-0 15 l:.g3 'ifh516 ltJe5 with compensation. d24) 12 ltJe5 ltJd7 (12 ... 0-0 13 h4! 'ifh6 14 g4ltJd5 15 g5 ±; 12 ...h5 13 f4 'ti'h6 14 J.d3 0-0 15 0-0 t / ± Panchenko-Timoshenko, Kiev 1986) 13 ltJe4 'ifh6 14 ltJc4 0-0 t G.ColemanH.Stern, Chicago 1994.

d25) 12 h4 'ii'h6 13 J.e2ltJd7 (Basel-Crnie, e-mail 1999; 13 ... ltJd5 14 ltJe4 0-0, Braun-Boer, Miskolc 1999, 15 g4! f6 160-0-0 t / ±) 14 g4!? 0-0 15

o-o-ot.

11 ...0-0 12 h4 'ii'h6 13 J.e2 J.xc3 14 bxc3ltJd5 14... 'ifg6 (Tocchioni-Lazie, Condino 1991) 15 'it'xg6 hxg6 16 J.f3 ±. 15 g4 1i'f6 16 J.d3 White has an advantage. E22) 10...'ti'h5 11 J.d3 11 J.e2 1i'g6 limits White to a very slight edge: 121i'xg6 hxg6 13 J.f3 g5 (13 ... ltJd5 14.:tel J.d7 15 0-0 'llte7 16 ltJe4 f5 17 ltJc5 J.xc5 18 dxc5 is also slightly better for White, Duz-Khotimirsky - Chigorin, Karlsbad 1907) 14 ltJe5 ltJd5 15 .:tc 1 J.d6 16 a3 J.xe5 17 dxe5 t Schulz-Sadov, Manitoba 1999. 11 ...0-0 12 0-0 Other moves: a) 12ltJe5 c5 13 0-0 cxd4 14 exd4 1:.d8 15 .:tadl t Heilbrunn-Schweber, Sao Paulo 1963. b) 12 a3 J.e7 13ltJe2 (13ltJe5 J.d6, Puig Llopis-Rios Garcia, Burjassot 1996, and now 14 ltJe4!? t) 13 .. .'tIt'h4 14 ltJf4ltJd5 (Cedikova-Cecil, Klatovy 1996) 15 ltJe2 ltJf6 16 b4 is slightly better for White. 12...c5 12 ... J.xc3 13 bxc3 c5 (13 ... ltJd5 14 ltJe5 f6 15 J.e2 t / ± CiprianovaMozna Hojdarova, Sumperk 1983) 14 ltJe5 (Diaz Perez-Dulanto, Buenos Aires OL 1939) 14 ...ltJd5 15 J.e2 'ifh6 16 c4 t / ±. After the text-move (12 ... c5) Vainio Matti-Raty Sakari, corr. 1976 continued 13 dxc5 J.xc5 14 ltJa4 J.e7 =.

7 ti:Jd2 iLb4: MINOR LINES Better is 13 i.e2 or 13 a3 with an advantage for White. E23)

10••.1i'd8 (D)

A safe retreat, but somewhat lacking in dynamism. The queen often ends up moving to c7 later. 11 a3 Also good is 11 i.e2 0-0 (ll...ltJd5 120-0 ltJxc3 13 bxc3 i.e7 14 i.f3 0-0 15 l:lfbl 'fic7 16 a4 t Duessel-Lizka, Badenweil1994) 120-0 (12 .l:.dlltJd5 13 0-0 ltJxc3 14 bxc3 i.e7 15 e4 t Mousiadou-Karagianni, Athens 2000) 12... ltJd5 (12 ... i.d6 13ltJxd6 'fixd6 14 ltJe4 'fie7 15 ltJxf6+ 'fixf6 16 f4 t Ludy-Ledig, Mehlingen 1999; 12...'fie7 13 a3 i.xc3 14 'fixc3 l:.d8 15 i.f3 i.d7 16 .:tfdl t Dunkelblum-Grob, Belgium 1937) 13 a3 i.e7 14 l:.adl 'fic7 15 b4 i.d7 16 i.f3 t Foulds-Mosteller, Leopoldsburg 2000. 11...i.e7 1l...i.xc3+ 12 bxc3 0-0 13 i.d3 c5 14 .l:.bl!? (140-0 'fic7 15 .:tac1 b6 16 ltJe5, Mathys-Bilinski, Silvaplana 1993, 16... i.b7 17 f3 .l:.ac8 18l:lfdll:lfd8 =) 14... cxd4 15 cxd4 b6 160-0 t. 12 b4

121

Worse is 12 g3 h5 (12 ... 0-0 13 i.g2 ltJd5 140-0 b6 15 l:.fdl i.b7 16 .::tacl t Zakharov-Zolotic, Novi Sad 1989; 12... ltJd5 13 i.g2 ltJxc3 14 'fixc3 0-0 15 0-0 t Belotelov-Kovacs, Budapest 1997) 13 ltJe5 ltJd7 (13 ... ltJg4!? 14 ltJf3 h4 with counterplay) 14 0-0-0 (Gohler-Piihtz, Berlin 1987; 14 ltJf3 h4) 14 ...ltJxe5 15 dxe5 'fia5 16 f4 h4 with counterplay. 12...0-0 12... ltJd5 13 i.e2 0-0140-0 f5 15 f4 gives White a slight advantage, SantosGalego, Siio Paulo 1991. 13 i.d3 h614 0-0 ltJdS ISltJe4 'iie7 16l:.ac1 White has a small advantage, Klawonn-Palkova, Germany 1999. E24)

10••.i.xc3+ 11 'fixc3 'fixc3+ 12 bxc3 We now have a simplified position where White maintains a central majority and a space advantage, while Black has given up his main strategic asset - the bishop-pair. 12••• <J;e7 Other moves: a) 12 ... 0-0 13 ltJe5 ltJe4 14 .l:.cl f6 15ltJf3 t Gimmerthal-Ullrich, Sebnitz 1998. b) 12... b6!? 13 i.d3 (13 a4!? is also possible) 13 .. .'~e7 14 <J;e2 i.b7 15 l:.abl l:.ac8 16 .l:.hc1 c5 =Sifalda-Sery, Pardubice 1923. 13 f3 Or 13 i.e2 b6 14ltJe5 i.b7 15 i.f3 l:.hc8 16 'iii>d2 (16 a4!?) 16... l:tab8 17 l:.hc1 c5 18 i.xb7 l:txb7 19 f3ltJd7 20 ltJxd7l:lxd7 21 'it'e2 .l:.dc7 22 ~d2 .l:.d8 23 <J;e2 l:tdc8 112_112 Vidmar-Tartakower, Ujpest 1934. 13•••i.d714ltJeS

122

THE CAMBRIDGE SPRINGS

14':bl b61SttJeS':hc816i.a6':c7 17 ~d2 cS 18 ':hc1 ':d8 19 g4 i.a4! Alekhine-Bogoljubow, Pforzheim Wch (10) 1934. 14.••':hc8 15 ~d2 ':c7 16 i.d3 c5 17 ':hbl White has a small advantage in the ending, Alekhine-Bogoljubow, Nuremberg Wch (20) 1934. E25) 10..:ii'd5 Black centralizes his queen, on a square where it isn't so easy to attack. White must now play vigorously to keep any advantage. 11 0-0-0 Or: a) 11 ttJd2 i.xc3 12 bxc3 eS (or 12.. Ji'hS 13 i.d3, Wu Wenjin-Datu, Beijing 2001, 13 ... e5!? with counterplay) 13 e4 'fie6 14 i.c4 'fie7 IS O-O! Grtinfeld-Becker, Karlsbad 1929. b) 11 f3 'fid8 12 i.d3 0-0 13 0-0 c5 14 a3 i.xc3 IS bxc3 cxd4 16 cxd4 b6 17 ttJe5 i.b7 18 ':fc1 ':c8 with equality, Yermolinsky-Akopian, Glendale 1994. c) 11 i.d3 i.xc3+ 12 bxc3 (12'fixc3 'fixg2 13 0-0-00-014 f4 with compensation) 12 ...'fixg2 13 0-0-0 and then: c1) 13 ... 'fidS 14 ':hgl 0-0 IS f4 (15 ':g3, Van Kol-Van Rossum, COIT. 1934, IS ... b6 16 ttJe5 with a dangerous initiative for the pawn) 15 ... b5 16 ttJe5 with more than sufficient compensation, Tosic-Lazic, Banja Vrucica 1991. c2) 13 ... g6 14 h4 (Monticelli-Rosselli, Firenze 1929) 14.. :tWf3 and White has compensation. d) 11 a3 i.xc3+ 12'fixc3 (12 bxc3 c5 13 ':dl, Bellipanni-Messina, Santa Flavia 1997, 13 ... 0-0 14 f3 bS 15 e4

'figS with counterplay) 12... cS 13 dxcS 'fixc5 14 .:tcl 0-0 IS ttJeS 'fixc3+ 16 l:.xc3 ttJdS 17 ':c2 f6 18 ttJc4 ':d8 19 ':d2 i.d7 20 i.e2 ':ac8 21 0-0 i.e8 22 ':fdl i.a4 23 l:.el ttJe7 24 lhd8+ ':xd8 2S b3 i.bS liz-liz Lutz-Akopian, Santiago jr Wch 1990. 11 ...i.xc3 12 'fixc3 12 bxc3 0-0 (12 ... bS 13 e4 'fid8 14 ttJe3, Euwe-Van den Bosch, Amsterdam 1929, 14.. J:~b8 15 i.e2'fia5 16 eS ttJdS with counterplay) 13 i.d3 (13 :gl b6 14 g4 i.a6 is equal) 13 ... cS (Samisch-Pirc, Rogaska Slatina 1929; after 13 ... 'fixg2!? 14 ':dgl 'fidS IS e4 'fih5 16 h4 bS White has compensation, but Black's counterplay is sufficient) 14 e4!? 'figS+ IS 'fid2 'fihS 16 e5 !. 12...0-013 f3 13 'itbl 'fifS+ 14 i.d3 'fixf2 IS :dfl 'fih4 does not give White full compensation, liravorasuk-Datu, Kuala Lumpur 2001. 13...c5 14 e4 cxd4 15'fixd4 ~xd4 16 ':xd4 ! Remon-Meiramas, Fuerteventura 1992. E26) 10..:tWc7 (D)

w

7 0,d2 Ji.b4: MINOR LINES The main line. E261: 11 g3 E262: 11 a3 E263: 11.i.d3 E264: 11.i.e2

Now: 123 123 126 127

E261) 11 g3 The fianchetto has its logic, but is rather slow. 11 ...c5 Black has two good alternatives: a) l1...bS 12 ltleS a6!? (12 ... .i.b7 13 .i.d3 .i.d6 14 f4 a6 IS ltle4 t Riemersma-Holwijn, Vlissingen 1995) 13 .i.g2 .i.b7 14 0-0 cS with an equal position. b) 11...0-0 12 .i.g2 and here: bl) 12 ... .i.d7 13 a3 .i.e7 14 b4 and then: bll) 14...ltldS IS 0-0 ltlxc3 16 'ii'xc3 I:.ac8 (16 ... I:.fd8 17 l:tael.i.e8 18 l:tfdl I:.ac8 19ltlaS t Alekhine-Bogoljubow, Bad Nauheim 1936) 17 l:.abl I:.fd8 18 l:tfcl .i.e8 19 ltlaS t Garcia IlundainBordell, Terrassa 1994. b12) 14... l:.fd8 IS 0-0 l:tac8 (the two alternatives are IS ... .i.e8 16 ~fdl l:tac8, Batik-Seibold, corr. 1928, 17 ltle4!? ltlxe4 18 .i.xe4 fS 19 .i.f3 .i.f6 20 l:tael t and IS ... b6 16ltleS l:.ac8 17 l:.fc 1, Guimard-Cobo Arteaga, Havana 19S2,17 ....i.d618f4cSI9ltle4ltlxe4 20 .i.xe4 h6 21 'ii'f2 t) 16 l:.fdl (16 l:tfel .i.e8 17 ltleS, Capablanca-Side, New York 1931, 17 ... aS!? with counterplay) 16... b6 17 'ii'b2 ltldS (Marcussen-Pitters, corr. 1984) 18 I:.ael t. b13) 14 ...b6 IS 0-0 and here: b131) IS ... I:.ac8 16 I:.fel (16 l:.fdl I:.fd8! intending ... .i.e8 = old ECO; 16 l:.adl t thanks to White's extra spaceFilip) 16... cS!? (16 ... I:.fd817 l:tabl.i.e8

123

18 ltle4 ltldS 19 ltleS t KasparovAverbakh, Kislovodsk tt 1982) 17 bxcS (17 dxcS bxcS 18 bS eS 19 l:.abl .i.e6 20 ltla4 I:.fd8 =) 17 ...bxcS 18 dS exdS 19 ltlxdS ltlxdS 20 .i.xdS =. b132) IS ... aS 16ltleS! axb417 axb4 l:hal 18 l:txal l:tc8 19ltlxd7 'ii'xd7 20 ltla4! 'ii'd8 21 'iWb3 (Capablanca-Alekhine, Buenos Aires Wch (29) 1927) 21...bS 22 ltlb2 l:ta8 23 l:.el ltldS 24 ltld3 'ii'd6 2S .i.e4 g6 26ltlcS t. b2) 12... cS! 13 0-0 .i.xc3 (13 ... .i.d7 14 dS exdS IS ltlxdS ltlxdS 16 .i.xdS t Panczyk-Sokol, Opole 1976) 14 bxc3 l:.b8 IS I:.fel (Trojacek-Palka, Tatry 1999) IS ... bS!? 16ltleS .i.b7 =. 12 .i.g2 .i.d7 13 ltle5 13 'ii'b3 .i.c6 14 .i.xc6+ 'ii'xc6 IS 0-00-0 = Tsintsadze-Poliak, Evratovia 1939. 13•••cxd414 exd4 0-0150-0 l:.ac8 IS ...l:tab8 16 l:.ael (Weissgerber-Samisch, Swinemtinde 1931) 16... l:.fc8 =. 16 l:.ac1.i.b5 The chances are equal, Stoltz & Monosson-Alekhine & Reilly, consultation game 1931.

E262) 11 a3 .i.e7 (D) Worse is 11....i.xc3+ 12 'fixc3 0-0 (12 ... ltldS 13 'ii'c2 0-0 14 .i.d3 fS IS l:.cl .i.d7 16 ltleS ± Samisch-Honlinger, Rogaska Slatina 1929) 13 l:.el (13 b4ltldS 14 'ii'c2ltlb6 ISltleS t SebihWijesurija, Dubai OL 1986) 13 ...b6 14 ltleS .i.b7 IS .i.d3 l:.ac8 (1S ...l:.fc8!?) 16 0-0 l:.fd8 17 b4 t / ± PetkevichZoltek, Arco 2001. With the text-move, Black accepts a spatial inferiority, but preserves the bishop-pair in the hope that this will prove a long-term plus. Now White

124

THE CAMBRIDGE SPRINGS

should decide how he is to develop his bishop: E2621: 12 .i.d3 124 E2622: 12 g3 124 E2623: 12 SLe2 125 Less popular are: a) 12 ':cl .i.d7 13 b4 0-0 (Sanguineti-Guimard, Mar del Plata 1965) 14 SLd3 ;!;. b) 12 b4 b6 (12 ... lDd5 13lDe4 .i.d7 14 SLe2 0-0 15 0-0 lHcS 16 ':ael SLeS 17 'iVb3 ;!; B.Jones-Booth, Australian Ch 1995) 13lDe5 SLb7 14:tel ':cS (de Souza Mendes-Romano, Rio de Janeiro 1927) 15 i..d3!?;!;.

E2621) 12 SLd3 The queen and bishop are now lined up against h7, which will often cause Black to spend a tempo on ... g6 or ... h6 at some point. 12•••0-0 Other moves: a) 12 ... h6 13 0-00-0 14 :tael :tdS 15 ':fdllDg4 16 g3 e5 17 d5 ;!; G.Henriksen-Klippe, Norwegian Cht 1995/9. b) 12 ...b6 13 l:tel SLb7 14lDe5 l:tcs 15 lDe4lDd7 16lDxd7 'iVxd7 170-0;!; Gal-Fulop, Hungarian Cht 1997/S.

130-0 Or: a) 13 h3 c5 14 0-0 cxd4 15 lDb5 liz-liz Deshmukh-Datu, Calcutta 2001. b) 13 f4 h6 14lDe5 (Pojer-Brehovsky, Kostendorf 1995) 14... c5 with counterplay. c) 13 b4 ':dS (13 ...b6 14lDe5 SLd6 15 f4 ;!; Iglesis-Riquelme, Santiago tt 1992; 13 ... .i.d7 14lDe4lDxe415 .i.xe4 h6 160-0 ;!; Alvarez-Jimenez, Havana 1962; 13 ... g6 140-0 lDg4 15 f4, Spurek-Mantorski, Koszalin 1999, 15 ... b5 16 SLe2lDxh2 17 ~xh2 bxc4 ISlDe4 is slightly better for White) 14 lDe5 a6 (14 ... .i.d6 15 f4 a5 with counterplay) 15 f4 g6 160-0 (Szarvas-F.Kiss, Hajduboszormenyi 1999) 16... a5 also provides counterplay. d) 13 e4 h6 140-0 .i.d7 15 b41HdS 16 f4;!; Pikler-Szigeti, Budapest 1931. e) 13 lDe4 h6 (13 ... lDxe4 14 i..xe4 h6 15 ':el f5 16 .i.f3 i..f6 17 1i'c3 ;!; Sarek-Silar, Czech Republic 1995) 14 b4 ':dS 15 ':cl SLd7 16 h3 .i.eS 170-0 ;!; Ovod-Ioffe, St Petersburg 1997. f) 13':el :dS 140-0 SLd7 15 'iVe2 i..fS 16 lDe5 :tacS 17 f4 ;!; Lechtynsky -Kostro, Luhacovice 1971. 13..•SLd7 14lDe4 Or 14 b4 :tfdS 15 :fel (15 h3 i..eS 16 :tael l:tacS 17 l:tfdl ;!; J.GonzalesLesiege, North Bay 1996) 15 ... i..eS 16 h3 h6 17 'iVb3 ;!; Evans-Whitaker, South Fallsburg 1945. 14•••lDxe4 15 i..xe4 g6 White has a small advantage, Gerstenfeld-Chistiakov, USSR 1941.

E2622) 12g3 This positional approach has some features in common with the Catalan.

7 CiJd2 .i.b4: MINOR LINES 12•••cS (D) Alternatively: a) 12... 0-0 131t.g2 cS 14liJbS ~8 15 dxc5 1t.xc5 16 .:tdl a6 17 liJcd6 ;j; Yusupov-Panchenko, USSR 1984. b) 12 ... liJdS 13 1t.g2 1t.d7 14 liJeS l:!.c8 IS .:tcl liJxc3 16 'ii'xc3 ;j; Wikstrom-Hammarstrom, Lundjr 1991.

13 dxcS!? Instead: a) 13 liJbS!? 'ii'b8 14 dxcS 1t.xcs IS b4! (ISliJcd6+ .ixd6 16 'fixc8+ 'iVxc8 17liJxd6+ r:Ji;e7 18liJxc8+ .:thxc8 =; 15 iLg2 iLd7 16liJc3 'iVc7 17 liJe4liJxe4 18 'fixe4 l:!.b8 19 'fieS 'fixeS 20 liJxeS iLd6 21liJxd7 'itl>xd7 =) 15 ... .ie7 - 13 dxc5!? Lc5 I4b4.ie715liJb5'fib8. b) 13 iLg2 iLd7 14 liJeS cxd4 IS exd4 0-0 16 0-0 (16 liJxd7 'fixd7 = Baturinsky-Chistiakov, Moscow 1946) and now: bl) 16 ...iLb5 17 .:tfel (17 .:tfdl!?) 17 ... l:!.fd8 18 'fib3 iLa6 19 l:!.ad 1 .:td6 20 dS! :b6 21 'fia2 .id6 22 dxe6!! iLxeS 23 exf7+ (Levenfish-Chistiakov, USSR 1939) 23 ... r:Ji;h8! 24liJdS! 'fixf7 25 l:!.xe5 (25 liJxb6 'fixa2 26 liJxa8 'fixb2! 27 l:!.d8+ liJg8 28 iLd5 h5! 29 iLxg8 iLd4 with an attack - Levenfish) 2S ... liJg4 26 liJxb6 'fixf2+ 27 'itl>hl

125

'iVxb6 28 .:tfS liJf2+ 29 .:txf2 'fixf2 30 'fid5 .:te8 = Ragozin. b2) After 16 ...:ac8!? the simplest way to equalize is 17 ~3 iLc6 18ltJxc6 bxc6 = Poellen-Krabbe, COIT. 1998. 13.•.iLxcs 14 b4 iLe71SliJbS 'ii'b8 16liJb2! 16 liJcd6+ i..xd6 17 'fixc8+ 'ii'xc8 18 liJxd6+ rJi;e7 19 liJxc8+ .:taxc8 = Romanovsky. 16•.•liJdSI7 e4 a618 exdS axbS19 1t.xbS+ 'itl>f8 20 0-0 exdS 21l:!.fel1t.e6 22liJd3 White has an advantage.

E2623) 121t.e2 This move is generally a signal that White will focus on the queenside, and try to clamp down on Black's possible pawn-breaks. 12...0-013 b4 Worse are: a) 13 l:tcl cS! (Ruiz Mata-Escuder Vilaltella, Santa Coloma 1998) 14 dxcS 'fixcs 15liJe4 'fic7 16liJxf6+ iLxf6 17 i..d3 g6 =. b) 13 0-0 and then: bl) 13 ... liJdS 14 l:!.ael 1t.d7 IS g3 .:tad8 16 :tfdl f5 17 .if3 is slightly better for White, Metanomski-Lichtenstein, Vienna 1931. b2) 13 ... i..d7 14 b4 (14 liJeS .:tfd8 15 b4 1t.e8 16 f4, Ree-Nikolac, Wijk aan Zee 1979, 16... a5 with counterplay) 14 ...b6 IS .:tabl (15 .:tfel .:tfc8 16 .:tabl ;j; Langeweg-Van Scheltinga, Hilversum 1983; IS.iB :ac8 16 .:tfdl ;j; Capablanca-Alekhine, Buenos Aires Wch (11) 1927) 15 ...:fd8 16 .:tfdl i..e8 17 i..f3;j; Carlberg-Wiiala, COIT. 1988. b3) 13 ... cS! 14 liJbS 'fib8 IS dxcS iLxc5 16 b4 (16liJd2 i..b6 17 :adl a6

126

THE CAMBRIDGE SPRINGS

18 tDc3 %:td8 19 tDde4 tDxe4 20 %:txd8+ ..txd8 21 'i'xe4 ..td7 22 ..td3 fS =; 16 %:tfdl i.d7, Z.Szabo-Nemes, COIT. 1992, 17 tDbd6 tDdS 18 tDe4 i..e7 is equal) 16... ..te7 17 .:tadl i..d7 18 tDd4 %:tc8 = Suveges-Nemes, COIT. 1996. 13.•• b6 Or: a) 13 ... tDdS 14 0-0 i..d7 (14 .. .fS, Kupka-Plachetka, Tmava 1989, IS %:tfdl i..d7 16 %:tael ;!;) IS tDeS i..d6 16 tDbS cxbS 17 'i'xc7 (Hallengren-Stigrot, COIT. 1992) 17 ... tDxc7 18 tDxd7 l::tfd8 19 tDcs ;!;. b) 13 ....:td8 14 i.f3 i..d7 IS 0-0 i..e8 (IS ... tDdS 16 tDe4 b6 17 l:tfdl i..e8 18 h3 .:tac8 19 .:tael ! MacDonald-Maier, Kristoffel 1994; IS ... %:tac8 16 %:tfel b6 17 l:tabl i..e8 18 'i'b3 {I8 h3 'i'b8 19 i..e2! Sevcik-Popela, Bmo 1985} 18 ...'i'b8 19 g3! Hoelscher-Van Oosterom, COIT. 1980) 16 %:tfdl .:tac8 17 %:tael (17 g3, Ananchenko-Alavkin, Togliatti 2001, 17 ... tDdS 18 tDe4 b6 19.1:.ael f6 20 'i'e2!) 17 ... tDdS (Perdiguero Duenas-Solino Nebot, Aragon tt 1996) 18 tDe4!?!. 140-0 i.b7 14... i..a6!? IS tDeS ..txe2 16 'i'xe2 and then: a) 16...tDd7 17 tDc4 (17 f4, Ramesalerbic, Pula 1999, 17 ... tDxeS! 18 fxeS as 19 bS l:tac8 20'i'g4 cS with counterplay) 17 ... eS 18 dS tDf6 19 l:tadl .:tfd8 20 e4 as!. b) 16 ... cS 17 tDbS 'i'b7 18 bxcS bxcS 19 dxcS ..txcS =Al Rashed-Karp, Graz 1981. 15 iLf3 l:tac8 IS ... i.a6 16 tDe4 %:tac8 17 tDxf6+ i.xf6 (Milller-Seewald, COIT. 1988) 18 .:tael .:tfd8 19 .:tfdl !. 16.:tfc1

Other moves: a) 16 'i'b3 i..d6 17 h3 (17 tDxd6!? 'i'xd6 18 tDe4 tDxe4 19 i.xe4 fS 20 i.d3 !) 17 ... eS 18 %:tfd 1 exd4 19 %:txd4 %:tcd8 (Menyhart-Pal, Debrecen Ch 1994) 20 tDxd6 %:txd6 21 tDe2 !. b) 16 l:tabl tDdS (16 ... i..a8 17 e4 .:tfd8 18 %:tbdl bS {18 ... cS 19 bxcS bxcS 20 dS exdS 21 exdS ! Van der Werf-Lacrosse, Kiekrz 1995} 19 tDe3 eS 20 dxeS 'i'xeS =) 17 tDe4 fS 18 tDed2 (18 tDg3!?) 18 ... i..f6 19 l:tfel '12-'12 1.Ilczuk-Sacerdotali, COIT. 2000. 16....l:.fd8 17 %:tab! i..a8 Or 17 ... tDdS 18 tDe4: a) 18 ... g6 19 tDeS!? (19 'i'b3 i..f8 20 g3 'i'e7 21 c;ta>g2 i.g7 = CarlssonTosic, COIT. 1993) 19 ... fS 20 tDd2 i..f6 21 i..xdS %:txdS 22 tDdf3 !. b) 18 ... h6 19 tDeS i..d6 20 tDxd6 'i'xd6 21 'i'a4 a6 22 'i'b3 %:te8 23 a4 ! K.Arkell-Ballon, Isle of Man 1993. c) 18 ... fS 19 tDed2 (19 tDg3!? is also possible) 19 ... cS 20 bxcS bxcS 21 'i'a4 cxd4 22 exd4 !. 18 h3 h6 19 'i'b3 'i'b8 20 tDe4 tDxe4 21 iLxe4 i..f6 22 a4 White has a small advantage (ECO), Ribli-Smyslov, Las Palmas IZ 1982.

E263) 11 i..d3 (D) 11 ...0-0 Or: a) ll...b6 120-00-0 13 .l:.ael i..xc3 14 'i'xc3 ..tb7 IS tDeS %:tac8 16 b4 ! Suba-Minev, Bucharest 1978. b) ll...tDdS 120-0 i..d7 13 a3 i..e7 14 b4 tDxc3 IS 'i'xc3 is slightly better for White, Cheung-Nguyen, Sydney 1998. c) 1l...i.d7 12 tDeS (120-00-013 .l:.ael %:tfd8 14 tDeS i.e8 IS a3 i..f8 16

7 tDd2 iLb4: MINOR LINES

B

ttJa4 ;t 0stenstad-Lauridsen, Bergen 2001; 12 a3 ..td6 {12 ... i.e7 13 b4;t} 13 e4 e5 14 f4 exd4 15 e5 i.fB 16 exf6 dxc3 17 'iWe2+ ~d8 18 0-0-0 with a dangerous attack, Spielmann-Mieses, Regensburg 1910) 12... c5 13 0-0 (13 a3 cxd4 14 ttJxd7, Janowski-Black, New York 1918, 14 ... ..txc3+!? 15 bxc3 'iVxd7 16 cxd4 0-0170-0 =) 13 ... cxd4 14 ttJxd7 ttJxd7 15 exd4 a6 16 d5 ;t Alekhine-Soler, Barcelona 1928. d) 11...c5!? 12 dxc5 (KaeferbOckMarschalek, Vienna 1998) 12... ..txc5 13 ttJb5 'iVe7 14:c1 0-0 15 0-0 ..td7 16 ttJc3 :ac8 =. 120-0 Alternatives: a) 12:c1 h6 13 'iWe2 (Anfruns-MontaIban, Mar del Plata 1928) 13 ... c5!? with counterplay. b) 12 h3 c5 13 a3 cxd4 14 axb4 dxc3 15 bxc3 b5 16 ttJd2 (Einoullaeva-Polyzou, Litohoto 1999) 16 ... ..tb7 17 0-0 l:f.fc8 =. c) 12 a3 ..td6 13 ttJxd6 (13 l:f.c1!? with the point that 13 ... e5 14 d5 gives White a slight advantage) 13 ... 'iWxd6 140-0 e5 with counterplay, Dambrauskas-Timar, 1991. 12•.•h6 No better are:

127

a) 12... i.xc3 13 'iWxc3 ttJd5 14 'ilVc2 g6 15 a3 gives White a small advantage, Dudas-Timar, 1992. b) 12.. J:te8 13 e4 b5 14 ttJe5 ..td6 (Oppedal-McKaig, 1971) 15 f4 'ilVb6 16 ~hl ..ta6 17 'iWe2;t. c) 12... ~h8 13 h3 h6 14 :ac1 ttJd7 15 ttJe4 e5 (Gunnarsson-Prast, Sweden 1992) 16l:f.fd 1 exd4 17 exd4 and again White is slightly better. d) 12 ... g6 13 a3 ..td6 14 h3 e5 15 ttJe2 :e8 (Verot-Golpaygani, France 1999) 16 dxe5 i.xe5 17 ttJxe5 'iWxe5 18 :fdl ;to e) 12 ...:d8 and then: e1) 13 :tac1 i.e7 14 ttJe5 (LeonSanchez, Las Palmas 1996) 14... h6 15 a3 ttJd5 16 l:f.fdl i.d6 17 ttJf3 ;to e2) 13 a3 (Grotnes-Thorhallsson, Gausdal 1992) 13 ... i.xc3 14 bxc3 c5 15 :abl b6 16 ttJe5 i.b7 17 :fd1 :ac8

=

e3) 13 ttJe4 ttJxe4 14 ..txe4 g6 (or 14 ... h6 15 ttJe5 i.d7 16 i.h7+ ~f8 17 f4 ;t Gowans-Morgan, corr. 1934) 15 :ac1 i.fS 16 ttJe5 ..td7 17 a3;t Razuvaev-Panchenko, Sochi 1982. 13 h3 i.d614 l:f.fdl 14 ttJxd6 'ii'xd6 15 ttJe4 ttJxe4 16 ..txe4 e5 17 :fd1 ;t Wo1d-Sandum, Volda 1992. 14•••e5 15 ttJe4 ttJxe416 i.xe4 White has a small advantage. E264) 11i.e2 White relies on simple development. 11•.•0-0 Or: a) 1l...b5 12 ttJe5 a6 13 a3 il.d6 14 ttJd3 0-0 (T.Adams-Hoffer, corr. 1990-2) 15..tf3 i.b7 16 l:f.c1 l:f.ac8 17 b4 is a little better for White.

128

THE CAMBRIDGE SPRINGS

b) ll...tbd5 12 0-0 tbxc3 13 bxc3 iLe7 14 tbe5 g6 15 f4 iLf6 16 I:.abl is slightly better for White, Michell-Sultan Khan, Scarborough 1930. 120-0 (D) Other moves: a) 12 e4 c5 (liz_liz Olsen-Sandum, Kristianssund 1990) 13 e5 tbd5 14 a3 iLxc3+ 15 bxc3 b5 16 tbe3 iLb7 gives Black a slight advantage. b) 12 a3 iLxc3+ (l2 ... iLd6 13 tbxd6 'i!ixd6 140-0 {14 tbe4 tbxe4 liz-liz Banikas-Skembris, Greek Ch 1999} 14... e5 15 I:.fdl iLe6 16 tbe4 tbxe4 17 'iVxe4 exd4 18 I:.xd4;t Friesen-Hofman, Hengelo 1995) 13 'iVxc3 and here: bl) 13 ...tbd5 14 'iVc2 (14 'iVd2 c5 15 dxc5 'iVxc5 16 I:.c1 ;t Van BeersMedancic, Cannes 1997) 14... I:.e8 15 b4 'iVd8 16 0-0 ;t Menyhart-Timar, 1991. b2) 13 ... c5 14 dxc5 'iVxc5 15 'ike5 'iVxe5 16 tbxe5 tbd7 17 tbc4 b6 18 tbd6.:tb8 190-0 tbf6 (19 ... tbc5, Freeman-Van Dijk, New Zealand Ch 1984, 20 b4 tbb7 21 I:.fdl ±) 20 .:tfdl e5 21 iLc4 ;to

B

Now Black must decide on a plan: E2641: 12...b6 129 E2642: 12....:td8 129

Other moves: a) 12 ...tbd7 13 e4 (Mont ReynaudFifield, 1993) 13 ... e5 14 a3!? and White is a little better. b) 12 ... a6 13 I:.ac1 iLd7 14 I:.fdl I:.fd8 15 iLf3 iLe8 16 a3 iLe7 17 b4;t Polugaevsky-Ujtelky, Rostov on Don 1961. c) 12 ...iLxc3 13'iVxc3 tbd5 14'iVa3 tbb6 15 tbe5 f6 16 tbd3 (Soln-Reschun, Finkenstein 1994) 16 ... e5!? 17 dxe5 fxe5 ;to d) 12 ... iLd7 13 a3 i.d6 14 tbxd6 (liz_liz Henrichsen-Obringer, Cannes 2000) 14 ... 'iVxd6 15 I:.adl I:.ad8 16 tbe4 tbxe4 17 'iVxe4 'iVd5 18 'iVh4 is slightly better for White. e) 12 ... iLe7 13 I:.acl i.d7 14 tbe4 I:.fd8 (14 ... tbd5 15 tbe5 I:.ac8 16 a3 iLe8 17 tbc5 ;t Cao-Nunes, Las Piedras 1977; 14... I:.ac8 15 tbe5 I:.fd8 16 tbg5 iLe8 17 iLc4, Finegold-Clemance, Saint John 1988, 17 ... iLd6 18 f4 ;t) 15 tbe5 i.e8 16 tbxf6+ iLxf6 17 f4 ;t Sambuev-Kalygin, St Petersburg 2000. f) 12... i.d613 f4 i.d7 (13 ...tbd5 14 tbe4 iLe7 15 I:.f3 f6 16 I:.c1 gives White a small advantage, Kistella-Mallow, Goch 1994) 14 I:.adl c5 (Janowski-Marco, Vienna 1898) 15 tbxd6!? 'iVxd6 16 'iVb3 cxd4 17 I:.xd4 "ii'c5 18 iLf3 ;to g) 12 ...tbd5 and here: gl) 13 tbe4 i.e7 14 tbe5 tbf6 15 I:.ac1 i.d7 16 'Oii>hl I:.ac8 17 a3 ;t Mowla-Mohamed, Novi Sad OL 1990. g2) 13 iLd3 g6 (13 ... h6 14 tbe4 i.e7 15 a3 b6 16 I:.acl ;t RellstabAhues, Swinemiinde 1931) 14 a3 i.e7 (l4 ... tbxc3!? 15 bxc3 i.e7 intending ... c5, with counterplay) 15 I:.ac1 i.d7 16 tbe5 iLe8 17 i.c4 ;t Samisch-Bogoljubow, Bad Nauheim 1937.

7 t'iJd2 i.b4: MINOR LINES g3) 13 i.f3 a5 14 a3 i.e7 15 J:.ac1 i.d7 16 liJe5 ;I; Garcia Ruiz-Luque Galvez, 1998.

E2641) 12•.• h6 This fianchetto has its logic, but White's bishop is ready to come to f3, while his knights can easily find attractive squares. 13:acl Or: a) 13 l:!.fc1 i.b7 14 i.f3 ':'ac8 15 a3 i.xc3 16 'ii'xc3 l:.fd8 17 b4 c5 = Rufener-Aliev, Tallinn V-18 Ech 1997. b) 13 e4 .1t.b7 14 e5 liJd5!? (or 14 ... i.xc3 15 bxc3 liJe8 16 .1t.f3 c5 17 i.xb7 'ii'xb7, P.Kiss-Paal, Eger 1993, 18 J:.fdl ;1;) 15 i.d3 h6 16 a3liJxc3 17 bxc3 i.e7 18 .th7+ 'iiJ>h8 19 .te4 c5 20 i.xb7 'ii'xb7 =. c) 13 liJe4 i.e7 14 liJe5 .1t.b7 15 liJxf6+ (15 i.f3 c5 16 liJg5, HausSchObel, Hessen 1991, 16... h6 17liJe4 ':'ac8 with a very good game for Black) 15 ... .txf6 16 f4 c5 17 l:.ac1l:.ac8 18 b4 i.xe5 19 fxe5 'ii'b8 =. d) 13 a3 i.e7 (13 ... .txc3 14 'ii'xc3 liJd5 15 'ii'c2 c5 16 dxc5 'ii'xc5 17 l:.ac1 ;I; Lehmann-Bychkov, Budapest 1991; 13 ....td6 14 liJxd6 'ii'xd6 15 b4 .1t.b7 16 i.f3 l:.ac8 17 'ii'b2 ':'fd8 18 ':'ac1 ;I; E.Kiss-Geczi, Paks 1996) 14liJe5 (14 l:.fdl I?) 14 ... i.b7 15 i.f3 ':'fc8 16liJe4 liJd5 17 J:.fc1 c5 = Pomar-Letelier, Mar del Plata 1949. e) 13liJe5 and now: el) 13 ... i.b7 14 i.f3 J:.ac8 (Martinovsky-Allsbrook, Illinois 1990) 15 liJe4!?liJxe416i.xe4h617f4i.d618 liJc4 ;1;. e2) 13 ... i.xc3 14 'ii'xc3 i.b7 15 J:.fc1 J:.fc8 16 'ii'a3 liJd7 17 liJd3 a5 18

129

J:.c2 ;I; Granero Roca-Perdiguero Duenas, 1997. e3) 13 ... i.d6 14 f4 i.b7 (14 ... liJd5 15 liJxd5 cxd5 16 'ii'a4 i.b7 17 i.d3 J:.fc8 = Geberl-Jahrsdorfer, Bad Neustadt 1992) 15 J:.f3 (Hebert-Schroer, New York 1980) 15 ... 'ii'e7!? 16liJc4 c5 17 liJxd6 .1t.xf3 18 i.xf3 'ii'xd6 19 i.xa8 l:!.xa8 =. f) 13 l:!.fdl .tb7 14 .1t.f3 l:!.ac8 15 ':'ac1 .1t.e7 (Godjaev-Aliev, Baku 1998) 16 e4;1;. 13.••.th7 14 i.f3 14 liJe5 J:.fc8 15 f4 c5 16 i.f3 (16 Yi'b3 'ii'e7 17 a3 .1t.xc3 18 bxc3 liJe4 =) 16 ... cxd4 17 exd4 .txf3 18 ':'xf3 'ii'd6 19 'ii'd3liJd5 with good play for Black, Bum-Janowski, Vienna 1898. 14••.l:.acS Instead: a) 14... .txc3 15 'ii'xc3 c5!? (alternatively, 15 ... l:!.ac8, Lytchak-Tamm, Dortmund 1993, 16 'ii'a3! ±) 16 .txb7 cxd4 17 'ii'xd4 'ii'xb7 18 ':'fdl ;1;. b) 14... liJd5!? 15 ':'fdl (15ltJe4 .te7 16 ':'fd 1 ':'ac8 17 a3 f5 18 liJc3 c5 19 liJd2 ':'fd8 with counterplay) 15 ...liJxc3 16 bxc3 i.e7 17 i.e4 'ifi'h8 18 l:.bl c5 19 i.xb7 'ii'xb7 =. ISliJe4 15 a3 i.xc3!? (15 ... i.e7 16 b4;1; Van Wely-Thorhallsson, Manila OL 1992; White has a space advantage) 16 'ii'xc3 ':'fd8 17 l:.fdl c5 18 i.xb7 cxd4 19 exd4 'ii'xb7 =. IS•••liJdS 16liJgS g6 17 l:.fdl i.e7 ISliJe4 J:.fdS White has slightly better chances.

E2642) 12.•.l:.dS This is the main line. 13a3

130

THE CAMBRIDGE SPRINGS

White decides it is time to force the bishop back, so that he can start his queenside play. Otherwise: a) 13lL)e4 i.e7 14lL)eS i.d7 IS f4 (Shabtai-Pein, Tel-Aviv 1992) IS ...~!? 16':f3 f6 17lL)xd7 .:txd7 18 ':cl fS =. b) 13 .:tadllL)dS 14lL)e4 i.e7 IS a3 b6 16 i.d3 i.b7 17 .:tc1.l:.ac8 18 b4 h6 19 'ilVb3lL)f6 =Bogoljubow-Alekhine, Heidelberg Wch (10) 1929. c) 13 .:tfdl a6 (13 ... lL)dS 14 lL)e4 i.e7 IS .:tac1 i.d7 16 lL)eS i.e8 17 lL)cs ;!; Tiller-Karp, Graz 1981) 14 a3 i.e7 IS lL)eS i.d6 (1S ... cS!? 16 lL)a4 lL)d7 17lL)f3 b6 18 i.d3 g6 19 dxcS ;!;) 16 lL)e4 (16 h3 cS! 17 i.f3 cxd4 18 exd4 i.d7 =) 16... lL)xe4 17 'ilVxe4 ;!;. d) 13.:tac1 and now: dl) 13 ... lL)dS 14lL)e4 i.d7 IS lL)eS i.e7 16 a3 i.e8 17 i.d3 f6 18 lL)f3 ;!; P.Andreasen-Falberg, Aalborg 1992. d2) 13 ... i.d7 14 a3 i.e7 IS e4 i.e8 16 .:tfdl .:tab8 (16 ... .:tac8, Kremenietsky -Bobron, Moscow 1997, 17 eS lL)dS 18 lL)e4 ;!;) 17 lL)e3 'ilVaS 18 g3 ;!; Makogonov-Ragozin, USSR 1939. d3) 13 ... i.e7 14 a3lL)dS (14 ... a6 IS b4, Rada-Lakatos, corr. 1987-9, and now IS ... b6!? 16 i.d3 i.b7 17lL)eS ;!;) IS lL)e4 i.d7 16 i.f3 (16 i.d3 i.e8 17 'ilVe2 ;!; Kashdan-Bogoljubow, Prague OL 1931) 16 ... i.e8 17 .l:.fdl .:tac8 18 b4 ~8 19 g3 b6 20 'ilVb3 ;!; Honlinger-Griinfeld, Vienna 1931. We return to 13 a3 (D). Now Black must decide how far back along the diagonal to take the bishop: E26421: 13•••i.e7 130 E26422: 13... i.f8 131

E26421) 13...i.e7 14 b4

B

Or 14 .:tfdl i.d7 (14 ...b6 IS b4 -14 b4 b615 .:tfd1) IS b4 (1S e4 cS 16 dS exdS 17 exdS i.d6 18 h3 .:te8 is equal, Siimisch-Bogoljubow, Karlsbad 1929) IS ... lL)dS, and then: a) 16 e4lL)xc3 17 'ilVxc3 i.e8 18 g3 b6 19 .:tac1 .:tac8 20.l:.bl (20 lL)eS cS! 21 i.a6 .:tb8 22 f4 f6 23 lL)d3 'ilVc6 =) 20 ... a6 21 a4 bS 22lL)eS as! 23 bxaS b4 '+ Donchev-Yusupov, Thessaloniki OL 1988. b) 16lL)e4 b6 17lL)eS as (17 ... i.e8 18 .:tac1 as 19 lL)xc6 i.xc6 20 'ilVxc6 'ilVxc6 21 .:txc6 axb4 22 axb4 i.xb4 = Poutiainen-Heinola, corr. 1982) 18 bxaS (18 lL)xd7 'ilVxd7 19 bxaS .:txaS 20 a4 .l:.da8 '+ B.Nielsen-Bogoljubow, Munich 1941) 18 ... .:txaS 19 a4 .:tda8 =. 14...b6 Other moves: a) 14... i.d7 and now: al) IS g3 (Dtimer-F.Meyer, 2nd Bundesliga 1989/90) IS ... .:tac8!? intending ... b6 and ... cS, with counterplay. a2) IS .l:.ac1 i.e8 (1S ... .l:.ac8 16 i.f3 i.f8 17 'ilVb3 'ilVb8 18 .:tfdl;!; A.Rychagov-Kossov, Moscow 1996) 16 .l:.fdl .l:.ac8 17 g3 i.f8 18 e4 lL)d7 19 i.g4 is slightly better for White, EngqvistGunnarsson, Stockholm 1993.

7 0.d2 iLb4: MINOR LINES a3) 15:tel i..e8 16 i..f3 ':ac8 17 g3 ':d7 18 lbe5 ':dd8 19 lba4 t LangeSchindler, w.German Ch 1950. a4) 15 lbe4lbxe4 16 'ikxe4 i..f6 17 ':ael i..e8 18 f4 'ike7 19 'iVc2 t Vigneron-Pyrich, corr. 1995. b) 14 ...lbd5 15 lbe4 (15 lbe5 i..d6 16 i..d3 i..xe5 17 dxe5, Miinder-Hildebrand, w.Germany 1982, 17 ... h6 is equal) 15 ... i..d7 16 ':fel i..e8 17lbc5 i..f8 18 g3 'ilie7 19 'iVe4 t M.Gurevich-AN.Panchenko, USSRCht 1988. 15 ':fdl Instead: a) 15 ':ael (Kristensen-Luzardo, email 1999) 15 ... c5!? 16 dxc5 bxc5 17 b5 i..b7 18 .:I.fdl .:I.xdl+ 19 ':xdl ':d8 =

b) 151Hcl i..b7 16 1.f3 a6 (16 ... c5 17 1.xb7 'iVxb7 18 dxc5 ':ac8 19 ':abl bxc5 20 b5 t Unglaub-Leung, corr. 1990-5) 17 %:labllbd7 18 a4 ':ab8 19 a5 t (19 g3, Donner-Belle, Delft 1982, 19 ... i..xb4! 20 ':xb4 c5 21 dxc5 1.xf3

+). Is •.•lbdS 15 ...1.b7!? 16.:1.ael %:lac8 (16 ... aS 17 bxaS b5 18lbe5, Timar-Marczinka, corr. 1988, 18...'iVxaS 19lbxb5! cxb5 20'ikc7 t) 17 1.f3 (17 lbe5 c5! gives Black counterplay: 18 'iVb2 'ilib8 19 bxc5 bxc5 20 %:lbl i..a8 =) 17 ...lbd5 (17 .. :ii'b8!? 18 'ikb2, Cattin-Vianin, Plainpalais 1993, 18 ...1.a8!? 19lbe5 1.d6 20 lbe4 lbxe4 21 1.xe4 c5 with counterplay) 18 lbe2 c5 19 dxc5 bxc5 20 b5 1.a8 = Lew-Kristoffel, corr. 1986-91. 16 lbeS lbxc3 17 'ikxc3 i..b7 18 ':ac1! Or 18 i..f3 ':ac8 19 ':ael: a) 19...1.d6 20 lbxc6 i..xh2+ 21 Whl (21 Wfl !?) 21...1.xc6 22 'ikxc6 'ilixc6 23 ':xc6 .:I.xc6 24 i..xc6 1.d6 25

131

b5 t Mikenas-Alekhine, Prague OL 1931. b) 19 ... c5! 20 b5 (20 i..xb7 'iVxb7 21 dxc5 ':'xdl+ 22 ':'xdl bxc5 is level) 20 ... i..xf3 21lbxf3 'iVb7 =. 18•.•':ac8 19 i..hS! g6 20 i..f3 White has a small advantage. E26422) 13•.•1.f814 b4 14 ':acl 1.d7 15 lbe5 (15 b4 1.e8, 112-112 Razuvaev-Smyslov, Sochi 1986, 16 lbe4 lbxe4 17 'ilixe4 t) 15 ... i..e8 16 ':fd 1 c5 17lbe4lbxe4 18 'ikxe4 i.a4 19 ':el t Szigeti-Havasi, Budapest 1931. 14.•• b6 14 ...'ilie7 15 .:I.fdllbd5 16lbe4 1.d7 17lbc5 i.e8 18 1.d3 g6 19 e4lbb6 20 lba5! t Smagin-AN.Panchenko, Tallinn 1986. 15 i..f3 15 ':fcl 1.b7 16 1.f3 c5 17 i.xb7 'iVxb7 18 dxc5 ':ac8 (Rohde JensenAguilar Melian, corr. 1997) 19 %:labl bxc5 20 b5 t. IS .••1.b7 16 ]:tfdl as 17 bxaS bS 18 lbd2!? 18lbe5 ':xa5 19 a4 ':c8! (19 ... bxa4 20 ':xa4 ]:tda8, Arsovic-Subasic, Yugoslavia 1991, 21 ':bl lbd5 22 %:lxa5 ':xa5 23 lbe4 ±) 20 lbe4 (20 'iib3 b4 21lbc4 ':a6 22lbe4lbxe4 23 1.xe4 c5 with counterplay) 20 ... lbxe4 21 1.xe4 h6 22 lbd3 1.d6 23 h3 ':ca8 =. 18••.'ikxaS 19lbb3 'ikb6 20 a4 White has a small advantage.

Thus we conclude that White can keep at least a small advantage against Black's 8th move alternatives to 8... 0-0. If Black wishes to play ... dxc4, then it is better to do so on move 7 than on move 8.

9 7 lbd2 jLb4: Main Line (8 "iVc2 0-0) 1 d4 d5 2 c4 e6 3 ltJc3 ltJf6 4 .i.g5 ltJbd7 5 e3 c6 6ltJf3 'iVa5 7ltJd2 .i.b4 8 'iVc2 0-0 (D)

Black makes a useful developing move and keeps all his options open regarding a counterblow in the centre. At this point White has a very wide choice: A: 9.i.h4 133 B: 9 ltJb3 136 c: 9a3 137 D: 9.i.xf6 140 E: 9.i.e2 149 Other moves: a) 9 cxd5 ltJxd5 10 ltJxd5 'iVxd5 (1O ... exd5 11 .i.d3 h6 12 .i.f4 ltJf6 13 a3, Andi-Z.Kiss, Hungarian Cht 1993/4, 13 ... ltJh5 14 .i.e5 f6 =) 11 .i.f4 (11 .i.h4 e5 12 dxe5 ltJxe5 13 a3 .i.f5 =+= Etcheverry-Ayerra, Uruguay 1961; 11

f4, Modig-Sandman, corr. 1992, l1...h6 12.i.h4 e5 =+=) l1...e5 12 dxe5ltJc5 with good play for Black. b) 9 f4ltJg4 (9 ...b6 10 .i.d3 .i.a6 11 0-0 .i.xc3 12 bxc3 = Euwe-Fontein, Amsterdam 1922) 10 'ifi>e2 f6 11 .i.h4 dxc4 12 h3 ltJh6 13 g4 b5 + laffeSchrader, Saint Louis 1904. c) 9 c5 e5 (or 9 ... b6 10 ltJb3 {1O .i.xf6!? =} 1O....i.xc3+ 11 bxc3 'iVa3 12 .i.xf6 ltJxf6 with good play for Black, Elemberg-Martin, Uruguay 1961) 10 ltJb3 (10 .i.xf6 ltJxf6 11 dxe5 ltJe4 is slightly better for Black, Kines-Horvath, Hungary tt 1990) 1O... 'iVc7 11 a3 .i.xc3+ 12 bxc3 b6 (12 ... ltJe4!?) 13 dxe5 (13 cxb6 axb6 +Garcia SuarezAngel Armas, 1999) 13 ... 'iVxe5 14 .i.f4 'iVe4 =. d) 9 h4 :e8 (9 ... c5 10 dxc5, NeffLiiva, Estonia 1996, 1O ... h6 11 ltJb3 'iVc7 12 .i.xf6 ltJxf6 13 a3 .i.xc5 14 cxd5 .i.b6 15 a4 a5 16 dxe6 .i.xe6 with compensation) 10 .i.e2 e5 (De VriesBelle, Dieren 1989) 11 dxe5 ltJe4 12 ltJcxe4 dxe4 13 a3 ltJxe5 14 0-0-0 =. e) 9.:xcI and then: el) 9 ... ltJe4 10 ltJdxe4 dxe4 11 .i.f4 e5 !? (or 11...:e8 12 a3 .i.xc3+ 13 'iVxc3 ± Subrt-Kalivoda, Prague 1992; 1l...'iVxa2? 12 .i.d6! .i.xc3+ 13 'iVxc3 :e8 14 b3 'ij'a6 15 c5 b5 16 cxb6 'iVxb6 17 'iVxc6 ±) 12 dxe5 'iVxa2 13 e6 fxe6 14 .i.d6 .i.xc3+ 15 'i!Vxc3 ;t

7 liJd2 Ji.b4: MAIN LINE (8 'ilc2 0-0) e2) 9 ... ':e8 10 a3 .ixc3 11 'fixc3 'fixc3 12 ':xc3 (12 bxc3!?) 12... e5 13 dxe5 ;t Wohl-Burisch, Greifswa1d girls 1999. e3) 9... dxc4 10 .ixf6liJxf6 11 .ixc4 (11 liJxc4 'ii'xa2!? {11...'ii'g5 12liJe5 ;t Rogers-Casey, Irish Ch 1998} 12.i.d3 .ixc3+ 13 'fixc3 'ii'a4 14 b3 'fib5 15 liJe5 'ii'd5 16 0-0 and White must prove that the pawn sacrifice is correct) l1...e5 12 liJb3 'ii'c7 13 0-0 = Streichenberg-Micalizzi, Mendrisio 1989. f) 9 .if4 ':e8 (9 ... liJh5 10 liJb3 'ii'd8 11 .ig3 a5 12 .i.d3 f5 13 0-0 liJxg3 14 fxg3 = Strecker-Cremer, corr. 1989; 9 ... c5 10 liJb3 'ii'a4, lokel-Gnirk, corr. 1983, 11 dxc5 dxc4 12 .ixc4 .i.xc3+ 13 'ii'xc3 e5 14 .i.g3liJe4 =) and now: £1) 10 .i.e2 e5 11 dxe5liJxe5 120-0 liJg6 13 .i.g3 (13liJb3 'ii'd8 14 .i.g5 =) 13 ....ie6 (13 ... .i.xc3!? 14 bxc3liJe4 =) 14 liJb3 'ii'd8 15 cxd5 liJxd5 liz-liz Sacconi-Griinfeld, Merano 1926. £2) 10 liJb3 and here: £21) 1O....ixc3+ 11 bxc3 'ii'a4 (or 11...'fid8 12 .ie2 e5 13 .i.g3, GalGyorke, Hungary 1998, 13 ... dxc4 14 .i.xc4liJb6 =) 12 cxd5 cxd5 13 %:tc1 (13 .ie2, Hess-Rueb, Berlin 1922, 13 ... b6 14 %:tel .ia6 +) 13 ... e5 14 dxe5 liJxe5 15liJd4 =. f22) 1O...'ii'a4 11 cxdSliJxdS 12.id6 (12 .id3, Bishop-Cooper, New Zealand Cht 1996, 12... e5 13 .i.xe5 liJxe5 14 dxe5 .i.xc3+ 15 bxc3 'fih4 160-0 %:txe5 with good play for Black) 12 ... e5 13 .ixb4 'ii'xb4 14 %:tdl liJ7f6 with equality. A)

9 .th4 (D) A prophylactic retreat, aimed against Black's idea of ... liJe4. Now:

133

B

A1: 9•.•c5 A2: 9...':e8 A3: 9•••e5

134 134 135

Or: a) 9 ... dxc4 10 liJxc4 'ii'h5 11 .i.g3 liJd5 12 .id3 (12 .i.e2, Bjazevic Montalvo-Rengel, Mendoza tt 1985, and now 12 ... 'fih6 13 o-o;t) 12 ... f5 13 .i.e2 gives White a slight advantage, Ferreira-Bray, Portuguese Cht 1993. b) 9... b5 10 cxd5 (after 10 c5 e5 Black has counterplay, LechtynskyHamann, Copenhagen 1983) 1O... cxd5 11 liJb3 .ixc3+ 12 bxc3 'ii'a4 13 'ii'b2 ':b8 14 .i.d3 ;t . c) 9 ... a6 10 a4 (10 .i.d3!?) IO .. Jle8 11 .i.d3 e5 12 liJb3 'ii'c7 13 cxd5 (Cenker-Hotak, Slovakia 1998) 13 ... e4 14 .i.e2 cxd5 15 .i.g3 ;t. d) 9 ...b6 and then: dl) 10 f3 c5 (10 ....ia6!?) 11 .i.d3 (11 a3 cxd4 12 exd4 dxc4 13 liJxc4 'ii'h5 14 .ig3 .ie7 =) 11...cxd4 12 exd4 .i.a6 13 0-0 .ixc3 14 bxc3 ':ac8 is slightly better for Black, Grala-Panczyk, Siedlce 1976. d2) 10 .ixf6 liJxf6 11 .i.d3 .i.b7 (11....ia6 !?) 12 0-0 .ixc3 13 bxc3 leads to equality, Boerwinkel-Canal, corr. 1992.

134

THE CAMBRIDGE SPRINGS

d3) 10 i.d3 i.a6 11 0-0 i.xc3 12 bxc3 l:tfc8 (Rubtsova-Rozental, Moscow 1936) 13 a4 i.xc4 14 ttJxc4 dxc4 15 i.xc4;!;.

Al) 9•••cS We have seen this move work well in some positions. While it is not bad here, White can keep an edge. 10 ttJb3 Instead: a) 10 i.d3?! cxd4 11 exd4 dxc4 =+= Hohl-Timar, Budapest 2000. b) 10 i.e2 cxd4 11 exd4 dxc4 (Erdelyi-Kashdan, Prague OL 1931) 12 0-0=. c) 10 i.xf6 ttJxf6 11 dxc5?! (11 ttJb3!? 'fIic7 =) ll...dxc4 (ll...'ii'xc5!? 12 a3 i.xc3 13 'ii'xc3l:td8 14 i.e2 'fIie7 15l:tel e5 with excellent play for Black) 12 i.xc4 (12 ttJxc4 'fIixc5 13 a3 i.xc3+ 14 'fIixc3l:td8 15l:tel i.d7 =) 12 ...'fIixc5 13 0-0 b5 with a very good game for Black, Pfibyl-Kozeny, Vlasim 1999. d) 10 dxc5 dxc4 (1O ... ttJe4?!, Havasi-Asztalos, Gyor 1924, 11 ttJcxe4! dxe4 12 a3 i.xd2+ 13 'ii'xd2 'fIixc5 14 i.e2 'ii'f5 15 l:tdl f6 16 i.g3 ±) 11 c6 (Dudas-Payen, Budapest 1996; l1l:tel ttJd5 12 i.xc4 ttJxc3 13 bxc3 i.xc5 14 i.d3 h6 15 0-0 'fIic7 = Lopez Martinez-Fressinet, Leon 2001) 1l...i.xc3 12 'ii'xc3 (12 bxc3 bxc6 13 ttJxc4 'ii'c5 14 l:tdl i.a6 =) 12 ...'fIixc3 13 bxc3 bxc6 14 i.xc4 =. e) 10 a3 cxd4 11 exd4l:te8 (l1...dxc4 12 ttJxc4 i.xc3+ 13 bxc3, NasmanHalperin, e-mail 1995, 13 .. :ii'c7 14 i.e2 ;!;) 12l:tcl i.e7 13 i.g3 ;!;. 10.••'fIia4 10 ...'fIic7 11 ttJxc5 (11 i.xf6 ttJxf6, Westin-Butze, COIT. 1974, 12 dxc5 dxc4

13 i.xc4 i.xc5 14 i.d3 i.e7 15 l:tel ':'d8 =) 11...ttJxc5 12 i.xf6 ttJd7 13 i.h4 dxc4 14 a3 i.a5 15 'ii'a4 i.xc3+ 16 bxc3 ttJb6 17 'fIJb4 with better chances for White. 11 i.xf6 ttJxf6 12 dxcS 'fIic6 Other moves: a) 12 ... ttJe4 13 cxd5 ttJxc5 (alternatively, 13 ... i.xc3+ 14 bxc3 ttJxc5 15 .l:tdl ± Capablanca-Alekhine, Buenos Aires Wch (7) 1927) 14 .l:tcl ttJxb3 15 axb3 'fIia5 16 i.d3 Wh8 17 dxe6 i.xe6 18 i.e4;!;. b) 12 ... i.xc3+ 13 'fIixc3 ttJe4 14 'fIia5 'ii'xa5+ 15 ttJxa5 ttJxc5 (15 ... dxc4 16 i.xc4 ttJxc5, Gibbs-Roche, COIT. 1967, 17 b4 ttJd7 18 i.e2 ;!;) 16 cxd5 exd5 17 l:tel ;!; Brzozka-Grabczewski, Warsaw 1957. 13 a3 i.xcs 14 cxdS exdS Hadgkiss-Zelic, COIT. 1981-6. White can now play 15 i.b5!? 'ii'd6 16 ttJxc5 'ii'xc5 17 .l:tdl i.e6 18 l:td4 ;!; or 15 ttJxd5 'ii'xd5 16 ttJxc5 i.f5 17 'ii'c4 Vi'xc4 18 i.xc4l:tac8 19l:tcll:txc5 20 i.xf7+ ~xf7 21 ':'xc5 with a better ending. A2)

9...lte8 This move commits Black to little, and will be useful in most likely scenarios. However, it is somewhat lacking in energy. 10a3 Alternatively: a) 10 f4 ttJg4 11 i.f2 (EversoleBuchanan, New Mexico 1981) l1...c5!? 12 i.d3 cxd4 13 exd4 ttJxf2 14 ~xf2 ttJf6 =+=. b) 10 ttJb3 'ii'c7 (1O ... 'ii'a4 11 cxd5 exd5 12 i.d3 ttJe4 13 0-0 i.xc3 14 bxc3 c5 15 c4;!; Van Gisbergen-Quint,

7 ltJd2 i-b4: MAIN LINE (8 'ilfc2 0-0) Den Bosch 1992) 11 a3 i.xc3+ 12 'it'xc3ltJe4 13 'ii'c2 as (Platz-Raymond, Hartford 1964) 14 i.d3 !? a4 ISltJd2;1;;. c) 10 i.e2 eS (1O ... ltJe4 11 ltJdxe4 dxe4 120-0 i.xc3 13 bxc3 ±; 1O... b6 II 0-0 i.xc3 12 'ili'xc3 'ii'xc3 13 bxc3 ;I;; Borgman-Redeleit, COIT. 1930; 1O...dxc4 11 ltJxc4, lasnikowski-Cilia Vincenti, Novi Sad OL 1990, 1l...'ii'fS 12 'ii'xfS exfS 13 a3 i.e7 14 i.g3 ltJb6 IS ltJd6 i.xd6 16 i.xd6;1;;) 11 dxeS ':'xeS 120-0 ':'e8 13 ltJb3 'ikc7 14 i.g3 ;I;; Schaubmair-Priesner, Aschach 1996. d) 10 i.d3 i.xc3 (1O ... 'ii'c7 11 a3 i.f8 12 ltJf3 dxc4 13 i.xc4 ;I;; Altenburg-Loskamp, Bez 1985; 1O... h6 11 0-0 'ii'c7 12 i.g3 i.d6 13 i.xd6 'ikxd6 ;1;;; 1O... eS 11 dxeS ':'xeS 12 cxdS cxdS 13 0-0 h6 14 ltJb3 ;I;; Leskiewicz-Liitiainen, Hartwalll999) 11 bxc3 (Gonzalez-Piedelobo, Mataro 1998) 11...eS 12 cxdS cxdS 13 dxeS ':'xeS 14 i.g3 ':'e8 IS ltJb3 'ii'b6 ;1;;. 10•..i.xc311 bxc3 e5 Mihalik-Kurta, Slovakian Ch 1996. White can now achieve a small advantage by 12 i.d3 exd4 13 cxd4 dxc4 14 'ikxc4. A3) 9.••e5 (D)

This logical thrust is Black's best try for equality. 10 dxe5 Or: a) 100-0-0 exd4 11 ltJb3 'ii'b6 12 ':'xd4 dxc4 13 i.xc4 as (13 ... cS!?) 14 ltJd2 (Nowak-Panczyk, Warsaw 1981) 14... i.xc3 IS bxc3 cS =. b) 10 ltJb3 'ii'c7 (1O ... 'it'a4, Ragozin-Miasoedov, Leningrad Ch 1932, 11 i.xf6ltJxf6 12 dxeS ltJe4 13 cxdS cxdS 14 i.d3;1;;) 11 a3 (11 i.g3ltJe4 12 i.d3

135

fS 13 a3 i.xc3+ 14 bxc3 =GerhardtKossin, COIT. 1989; 11 i.e2 dxc4 12 i.xc4 exd4 13 ltJxd4 ltJeS is equal, Straat-Spielmann, Scheveningen 1923) 11...i.xc3+ (ll...i.d6 12 cxdS cxdS 13 ':'cl ;I;; Federau-Brameyer, Berlin 1999; ll...exd4, Wu Shaobin-Handoko, Singapore 1997, 12 axb4 dxc3 13 i.g3 'ii'b6 14 bxc3 ':'e8 IS cxdS cxdS 16 i.d3 ;1;;) 12 'ii'xc3 exd4 13 ltJxd4 l:.e8 14 'ii'c2 cS IS cxdS 'ili'as+ 16 b4 cxb4 17 'ii'd2 'ii'xdS 18 'ii'xb4 b6 with an equal position. 10.••ltJe4 llltJdxe4 Other moves: a) 11 cxdS? (Rogovtsev-Boidman, Simferopol 1991) ll...ltJxc3! 12 bxc3 i.xc3 13':'c 1 i.b4 14 e6 (14 dxc6 bxc6 IS f4ltJcS 16 ':'dl i.e6 17 i.e7 l:.fd8 +) 14.. .fxe61S dxe6ltJeS16f4ltJg617 i.c4 l:!.e8 18 i.g3 i.xe6 +. b) 11':'c1 i.xc3 12 bxc3ltJxd2 13 'ii'xd2 ltJxeS 14 cxdS cxdS (ElsnessLeer Salvesen, Gausdal199S) IS c4 =. c) 11 ltJcxe4 dxe4 12 a3 (12 e6ltJcS with good play for Black, RajkovicSmagin, Iraklion 1993) 12 ... ltJxeS 13 l:!.dl i.xd2+ 14 'it'xd2 'iVxd2+ IS ':'xd2 i.fS 16 i.g3 ltJd3+ 17 i.xd3 exd3 1/2- 1/2 Bellon-Vera, Santa Clara 2001. 1l ...dxe4 12 e6

136

THE CAMBRIDGE SPRINGS

12 ~g3?! ttJxe5 13 l:.c1 ttJd3+ 14 exd3 Timar-MitIasovszky, Budapest 1991. 12••. ttJe5 Or: a) 12 ... fxe6 13 ~e2 (13 l:.c1 'ii'xa2 14 ~e7 ~xc3+ 15 'ii'xc3 t W.SchmidtGrimm, Malta OL 1980) 13 ... ttJc5 (or 13 ... ~xc3+ 14 'ii'xc3 'ii'xc3+ 15 bxc3 t Putzbach-Schroeter, Germany 1981; 13 .. :iIt'f5 14 0-0 ~xc3 15 'ii'xc3 ± Nenonen-Tissari, Finland U-16 1996) 14 a3 ~xc3+ 15 'ii'xc3 'ii'xc3+ 16 bxc3 ~xd3

+

b) 14 ... ~f5 15 a3 (Holm-Bogdanovic, COIT. 1953) 15 ... iLxc3 16 'ilt'xc3 'i!kxc3+ 17 bxc3 ttJd3+ 18 iLxd3 exd3 19 l:.hel t. c) 14... ~g4 15 :d4 (Schreiber-Peric, COIT. 1987) 15 ... ~f5 gives White a slight advantage. 15 ttJxe4 15 ~g3?! ~xc3 16 'ii'xc3 'i!kxc3+ 17 bxc3 ttJg4 15 .••'i!kxa2 16 ttJg5 iLf5 17 e4 l:.d7 18:xd7 ~xd7 The position is unclear.

+.

t. b) 12... ttJb6!? 13 exf7+ l:.xf7 14 0-0-0 (14 a3 ~xc3+ 15 'i!kxc3 'ii'xc3+ 16 bxc3 ~e6 17 c5 ttJa4 18 l:.d 1 ttJxc3 with good play for Black) 14 ... ~g4 15 l:.d2 (15 l:.d4 c5 16 l:.d6 ~xc3 17 'i!kxc3 'ii'xa2 18 'i!ka3 'i!kxa3 19 bxa3 l:.d7 =) 15 ... ~xc3 16 'i!kxc3 'i!kxa2 17 'ii'a3 'ilt'xa3 18 bxa3 c5 19 ..t>c2 ~e6 is equal. 13 exf7+ The alternatives cannot be recommended: a) 13 e7?! l:.e8 Michell-L.Steiner, Hastings 1932/3. b) 13 a3?! ~xc3+ 14 'i!kxc3 'ii'xc3+ 15 bxc3 iLxe6 is slightly better for Black, Stojnie-Kosmac, Krsko jr 1993. 13••.l:.xf7 140-0-0 Or: a) 14 a3 ~xc3+ 15 'ii'xc3 'ilt'xc3+ 16 bxc3 ~e6 = Clara-Werner, 2nd Bundesliga 1988. b) 14 ~e2 (Soln-Stojnie, Finkenstein 1996) 14... ttJd3+! with an attack - Asztalos. 14...~e6! Worse are: a) 14... ~xc3?! 15 'ii'xc3 'ii'xc3+ 16 bxc3 i.f5 17 l:.d4 ± Euwe.

B)

9 ttJb3 (D)

B

+

White often plays this move in these lines, but generally only when Black has played ... e5 or ... c5, since it is then likely that the centre will open and the knight will quickly find a good square. In an Exchange QGD type of position, on the other hand, the knight may prove poorly placed. 9•.•'ii'a4 Other moves: a) 9 ... 'ii'd8 10 ~d3 (10 a3 ~xc3+ 11 bxc3 h6 12 i.h4 e5 13 ~e2 'ilt'e7 14 0-0 is slightly better for White, Tsesarsky-Gamza, Tel-Aviv 1990) 1O... h6

7 liJd2 iLb4: MAIN LINE (8 'ii'c2 0-0) 11 .i.h4 dxc4 12 .i.xc4 e5 13 0-0 exd4 14 ttJxd4 ;t Boecker-Gerstner, Lauda 1986. b) 9 .. :ilic7 and then: bl) 10 .i.d3 dxc4 11 .i.xc4.i.d6 12 .i.d3 h6 13 .i.h4 was played in Rozwadowski-Blachut, COIT. 1992, and now 13 ... e5 14 l:tdl l:te8 is equal. b2) 10 .i.f4 .i.d6 (Nolf-Haegeman, COIT. 1996; 1O... e5!?) 11 cxd5 exd5 12 ttJb5 .i.b4+ 13 'itdl 'ilib6 14 .i.c7 'ilia6 15 a3 ;to b3) 10 cxd5 exd5 11 .i.d3 (alternatively, 11 a3 .i.d6 12 .i.d3 h6 13 .i.h4, Prosch-Koepcke, Mecklenburg jr 1994, 13 ... a6 14 .tg3 .i.xg3 15 hxg3 is level) 11....td6 (11...l:te8!? 12 l:tel a5 =) 12 h3 h6 13 .txf6 ttJxf6 140-0 'ilie7 with equality, Szucs-Gombocz, Hungarian Cht 1993/4. c) 9 ... .txc3+ 10 bxc3 'ilia4 (1O...'ilia3 11 ttJd2 h6 12 .tf4 b6 13 .te2 'ilie7 14 0-0 ;t Jobava-Acs, Erevan jr Wch 2000) 11 cxd5 cxd5 12 .td3 b6 and now: el) 13 .txf6 ttJxf6 14 c4 .ta6! ? (or 14 ...dxc415 'ilixc4 'ilixc416 .tXC4Ih-lh Mikhalchishin-Akopian, Lvov 1990) 15 c5 .txd3 16 'ilixd3 'ilic4 17 'ilie2 l:tfc8 18 l:tel 'ilib4+ c2) 13 0-0 .ta6 14 .tf4 :ac8 15 .txa6 'ilixa6 16 f3 l:tc6 StellwagenVolokitin, Rimavska Sobota U-1O Ech 1996. c3) 13 lDd2 'ilixc2 14 .txc2 .ta6 15 0-0-0 (Aseev-Najer, Elista 2001) 15 ... l:tac8 16 'itb2 ':'c7 17 e4 l:tfc8 18 %:tel 'iti>f8 =. c4) 13 'ilie2 (Zaslavsky-Botvinnik, Leningrad 1926) 13 ... .tb7 14 f3 l:tac8 15 l:tel 'ilia3 160-0 a5 =. 10cxd5 Or:

+.

+

137

a) 10 f3 h611.th4 (Kabisch-Gerstner, Eppingen 1988) 11... b6 12 'iti>f2 .txc3 13 'ilixc3 .ta6 14 ttJd2 l:tac8 =. b) 10 .txf6 lDxf6 11 a3 (alternatively, 11 'ilid2 .txc3 12 'ilixc3 b6 13 ttJd2, Kekelidze-Aponte, Duisburg U18 Wch 1992, 13 ... .i.a6 14 %:tel %:tfc8 =) 11....ta5 (11.. ..txc3+ 12 'ilixc3 b6 {12 ... ttJe4!?} 13 ttJd2;t Dokhoian-Panchenko, Aktiubinsk 1985) 12 cxd5 (12 .td3 dxc4 13 ttJxa5 'ilixa5 14 .i.xc4 e5 15 b4 'ilic7 16 ttJe4 'ilie7 =) 12... cxd5 13 .i.d3.txc3+ 14 'ilixc3 b6 15 ttJd2 .tb7

=

10...cxd5 Or 1O... exd5 11 .td3: a) 11 ... l:te8 12 0-0 .txc3 13 bxc3 h6 (13 ... ttJe4 14 .tf4 ;t) 14 .txf6 ttJxf6 ;t Toth Vano-Hajek, Ruzomberokjr 1996. b) 11....i.xc3+ 12 bxc3 b6 13 lDd2 'ilixc2 14 .txc2 h6 15 .i.f4;t. 1l.td3 b6 11...'ilic6 12 0-0 h6 13 .th4 ;t Tsesarsky-Rapoport, Tel-Aviv 1999. 12.i.xf6 12 f3 .ta6 13 0-0 (13 .txa6 'ilixa6 14 'ilie2 .txc3+ 15 bxc3 'ilia4 GutovLoginov, Moscow 1996) 13 ... .txc3 14 'ilixc3 l:tac8 (14 ... .:tfc8 112-112 HauchardPrie, Toulouse 1995) 15 'ilid2 h6 16 .th4 .txd3 17 'ilixd3 l:tc6 with good play for Black, Nikolic-OIl, Ter Apel 1996. 12..•ttJxf6 13 'ilie2 Vannelli-Moyse, Rome 1990. Black can now equalize with 13 ... .txc3+!? 14 bxc3 .i.b7.

+

C) 9 a3 (D) This only 'threatens to threaten' the bishop, so Black does not have to respond immediately:

138

THE CAMBRIDGE SPRINGS

B

Cl: 9•..ltJe4 C2: 9•.•dxc4

13S 139

Other moves: a) 9 ... c5 10 :tel .i.xc3 11 'ii'xc3 'ii'xc3 12 bxc3 b6 13 cxd5 exd5 14 .i.e2 .i.b7 15 0-0 .l:tfeS 16 .l:tfdl ;!; Cramling-Liiva, Kalev 1997. b) 9 ...:eS 10 .i.e2 (10 0-0-0 .i.xc3 11 'ii'xc3 'ii'xc3+ 12 bxc3 ;!; QuirogaGalvan, Buenos Aires 1996) 10 ... ltJe4 (10 ... dxc4 11 i..xf6 ltJxf6 12 ltJxc4 i..xc3+ 13 'ii'xc3 ;!; Truong-Patterson, Australian U-lS Ch 2000) 11 ltJdxe4 dxe4 12 i..f4 e5 (Haugen-Haaland, Stavanger 1969) 13 i..g3 exd4 14 exd4 ltJb6 15 .l:tbl ;!;. c) 9 ... i..d6 10 c5 and now: cl) 1O... i..e7 11 i..e2 (11 f4 'ii'dS, Marxen-Platzer, Germany jr tt 1995/6, 12 .i.d3 ;!;) l1...e5 120-0 :teS (12 ... h6 13 i..h4 :teS 14 b4 ;!; Coffman-Scott, e-maiI1995)13dxe5ltJxe514b4.ii.dS is slightly better for White, Webb-Panczyk, lelenia Gora 1975. c2) 1O... i..bS 11 .i.d3 (11 b4 'ii'c7, Vovsha-Rafe, Paris 1996, 12 ltJf3!? 'ii'dS 13 b5 h6 14.i.h4 'iVa5 15 'iVd2;!;) l1...h6 12 i..h4 e5 (Baraga-Loureda, Asturian Cht 1995) 13 dxe5 i..xe5 14 b4;!;.

d) 9 ... e5 10 dxe5 i..xc3 (lO ... ltJe4 11 ltJcxe4 dxe4 12 0-0-0 i..xd2+ 13 .l:txd2 ;!; Bellon-San Segundo, Las Palmas 1997) 11 'ii'xc3 'ii'xc3 12 bxc3 ltJe4 (12 ... ltJxe5 13 i..xf6 gxf6 14 cxd5 cxd5 15 ltJb3 i..e6 16 ~d2 ;!; Cramling-Ioseliani, Tilburg 1994; 12 ... ltJg4 13 cxd5 cxd5 14 c4 dxc4 15 ltJxc4 ltJdxe5, Kiedrowicz-Panczyk, Boleslawiec 1975, 16ltJd6f617 .i.f4.l:tdSlS .l:tdl ±) 13ltJxe4 dxe4 14 i..f4ltJc5 15 0-0-0 i..f5 16 .l:td6 ;!;. e) 9 ... .i.e7 10 ltJb3 (10 .i.d3 :teS 11 cxd5 exd5 120-0 i..d6 13 ltJe2 h6 14 .i.f4 ;!; Lipinsky-Simon, Germany jr tt 1992) 1O...'ii'dS (1O... 'iVc7 11 cxd5 cxd5 12 i..d3 i..d6 13 .l:tel ;!;) 11 i..d3 h6 12 i..h4 (12 h4 dxc4 13 .i.xc4, PereaRomano, Mar del Plata 1925, 13 ... a5 with counterplay) 12 ... a5 13 0-0 dxc4 14 i..xc4;!;. f) 9 ... i..xc3 and here: fl) 10 bxc3 lleS 11 .i.e2!? (II i..xf6 ltJxf6 12 cxd5 exd5 13 i..d3 'ii'c7 =) l1...e5 12 0-0 h6 13 i..h4 'ii'c7 14 .l:tfdl b6 15 i..g3;!;. f2) 10 'iVxc3 'ii'xc3 11 bxc3 b6!? (11...dxc4 12 .i.xc4 ltJd5 13 :tel ;!; Dondena-Amato, Villa Ballester 1992) 12 cxd5 cxd5 13 .l:tbl .i.b7 14 c4 dxc4 15 ltJxc4 ltJe4 16 i..f4 ;!;. Cl) 9•.•ltJe4 This move looks healthy and active, but it doesn't work very well. 10 ltJcxe4 Or 10 ltJdxe4 dxe4 11 i..f4 i..xc3+ (or l1...e5 12 dxe5 i..xc3+ 13 'iVxc3 'iVxc3+ 14 bxc3 .l:teS 15 .l:tdl ;!; VeselStojnic, Slovenia 1993; l1...f5 12 .i.e2, Faisal-Hassan, Abu Dhabi 2000, 12... e5 13 dxe5 i..xc3+ 14 'iVxc3 'ii'xc3+ 15

7 4:Jd2 iLb4: MAIN LINE (8 'ii'c2 0-0) bxc3 :e8 !) 12 'iVxc3 (12 bxc3 e5 = Aijo-Valtoaho, Finnish U -16 Ch 1996) 12 ...'iVxc3+ 13 bxc3 e5 14 dxe5 tDc5 15 0-0-0 i.f5 16 :d6 !. 10•.•dxe4 11 i.f4 11 i.h4 :e8 (1l...g5 12 i.g3 f5 13 0-0-0 i.xd2+ 14 :xd2 ± Spassov-Inkiov, Sofia 1984) 120-0-0 (12 :dl !?) 12 ... i.xd2+ 13 :xd2 'iVf5 (TimmanYusupov, Linares 1983) 14 i.e2 !. 11 .•.fS Or l1...e5!? 12 dxe5 tDxe5 13 :dl i.xd2+ 14 'iVxd2 'iVxd2+ 15 :xd2 ! 1

±. 12 0-0-0 i.e7 13 f3 exf3 14 gxf3

± Gschnitzer-Smagin, Bundesliga 1990/1.

e2) 9 •.. dxc4 This is the main line. Both sides will have to give up bishop for knight. 10 i.xf6 tDxf6 11 tDxc4 i.xc3+ 12 bxc3 Or 12 ~xc3 ~xc3+ 13 bxc3 and now: a) 13 ... c5 14 :bl! (14 i.e2, liz-liz Kasparov-Smyslov, Vilnius Ct (7) 1984, 14 ... b6 15 i.f3 :b8 16 e4 cxd4 17 e5 i.a6 =) 14 ... b6 (14 ... cxd4 15 cxd4 :d8 16 tDe5 tDd5 17 :c 1f6 18 tDf3 i.d7 19 e4 tDb6 20 i.d3 !; 14... :d8 15 i.e2 tDd5 16 :b3 cxd4 17 cxd4 b6 18 'ifi>d2 i.a6 19 :cl !) 15 tDe5 tDe4 (15 ... cxd4 16 cxd4 i.b7 17 f3 :ac8 18 ~d2 tDd5 19 i.d3!) 16 :cl f6 17 tDc4 :d8 18 f3 tDg5 19 dxc5 bxc5 20 tDa5 !. b) 13 ...b6 14 i.e2 (14 tDe5 i.b7 15 f3 :ac8 is equal) 14... i.a6 (14 ... c5 13... c5 14 i.e2 b6) 15 tDe5 i.xe2 16 'ifi>xe2 :ac8 liz-liz Griinberg-Inkiov, Sochi 1983. 12•.•'iVc7

139

12... 'iVd5 is less accurate: a) 13 i.d3 and then: al) After 13 ... b5 14 e4 'iVg5, White should play 15 tDe3! with a good game (instead, 15 tDe5 'iVxg2 does not give White compensation for the pawn, Timman-Kasparov, Prague (6) 1998). a2) Following 13 ... 'iVxg2 14 0-0-0 'iVd5, it is difficult to prove that White's sacrifice is correct; e.g., 15 :hgl (15 e4 'iVh5 16 :dgl b5 17 tDd6 e5 +) 15 ... c5 (15 ...b5!?) 16 f4 (16 :g3 cxd4 17 :dgl g6 18 cxd4 b619 tDe5 i.d7 =t) 16 ... b5 17 tDd2 c4 18 i.e4 tDxe4 19 tDxe4 f5 =t. b) 13 tDe5 c5 (13 ...:d8 14 f3 tDd7 15 tDxd7 i.xd7 16 i.d3 ! M.FischerNetzer, Mulhouse jr tt 1997) 14 f3 cxd4 15 cxd4 tDd7 16 f4 tDxe5 17 fxe5 f6 with counterplay. c) 13 f3 c5 14 i.d3 (14 tDe5, HogyeToth, corr. 1996, 14... b6 15 i.d3 cxd4 16 cxd4 i.a6 17 i.xa6 'iVa5+ intending ... 'iVxa6 =) 14... 'iVg5 15 0-0 ! Gonzalez-Ceferino, Spanish worn Ch 1993. 13 i.d3 Other moves: a) 13 e4 (Smagin-Rosenberg, USSR 1984) 13 ... b5!? with counterplay; e.g., 14 e5 (14 tDd2 e5!) 14... bxc4 15 exf6 c5 16 'iVe4 (16 fxg7 :d8) 16... 'iVa5. b) 13 i.e2 c5 (13 ... tDd7 14 :bl e5 15 0-0 !) 14 :cl b5 15 tDe5 :b8 = Lyle-Schierling, Germany 1989. 13...cSI4 e4 14 :bl b6 15 tDe5 i.b7 = Gandolphe-Milliet, Grasse-Mont 1997. 14.•. bS IS tDe3 Or 15 tDd2 i.b7 16 e5 c4 17 i.xc4 bxc4 18 exf6 i.xg2 19 fxg7 i.xhl 20 gxf8'ii'+ :xf8 =. IS .••cxd4 15 ... c4!? 16 i.e2 i.b7 17 e5 tDd5 =.

140

THE CAMBRIDGE SPRINGS

16 cxd4 'ii'd8!? Worse are: a) 16...'ii'a5+ 17 'ii'd2 'ii'xd2+ (or 17 ... 'ii'b6 18 e5 ;t Filippov-Bocharov, Tomsk 1998) 18 ~xd2 .i.b7 19 f3 .l:.fd8 20 lDc2;t. b) 16.. :ilVb6 (Sergiev-Buisman, corr. 1988) 17 'ii'c5! ;t. 17 'ii'b2 17 .l:.d1 is also possible. 17•.•a6 18 a4 'ii'a5+ 19 'ii'd2 b4 20 0-0 l:.b8 A position of dynamic equality has arisen.

O} 9.i.xf6 White radically deals with the problem of his loose bishop on g5. 9•••lDxf6 (D)

Mo, China 2001, 13 ... lDd7!? 14 i.e2 e5 =) 11 bxc3 l:.e8 12 lDf3 (EriksenSvendsen, HeIsinger 1936; 12 .i.d3 e5 =) 12 ... b6! c) 1O.l:.c1 .l:.e8 11 .i.e2 (11lDb3 iVd8 12 .i.d3 e5 with counterplay, Forstmaier-Guth, Bavaria 1995) l1...e5 12 dxe5 l:.xe5 (Galli-Ayerra, Uruguayan Ch 1960) 13 a3 .i.xc3 14 'ii'xc3 iVc7 15 0-0=. d) 10 lDb3 'ii'c7 11 a3 (11 i.d3 e5 12 cxd5 cxd5 13 dxe5 'ii'xe5 = MUndIe-De Asa, Manila OL 1992) 11 ... .i.d6 12 c5 (12l:.c1 !? dxc4 13 i.xc4 e5 =) 12... .i.e7 (Gonzalez-Parada, A1bacete Ch 1994) 13 f4 l:te8 14 i.d3 b6 with counterplay. e) 10 cxd5 exd5 11 i.d3 .i.d6 (or l1...h6 12 0-0 i.d6 13 h3 i.e6 with equality, Cayo-Helman, Buenos Aires OL 1939; 11...'ii'c7 12lDf3 .i.d6, Roethof-Van Kleef, Wijk aan Zee 1979, 13 l:.c1 'ii'e7 14 h3 .l:.e8 =) 120-0 'ii'c7 13 h3 .i.e6 14 l:.abl 'ii'e7 = Le BlancqS.Saeed, Thessaloniki OL 1984. f) 10 a3 i.e7 (1O...c5 I1lDb3 .i.xc3+ 12 bxc3 'ili'a4 = Nickel-Stutz, Wismar 1997) 11 cxd5 cxd5 12 i.d3 i.d7 13 0-0 l:.ac8 = Ruch-Lajarige, France worn tt 1999.

+.

Ol} Now: 01: 10 i.e2 02: 10.i.d3

140 143

Less popular are: a) 10 g3 e5 11 dxe5lDe4 12lDdxe4 dxe4 13 i.g2 .i.f5 = Shirazi-Schwarz, Wiesbaden 1992. b) 10 c5 .i.xc3 (1O...'iIi'c7 11 a3 .i.xc3 12 'ii'xc3 .l:.e8 13 lDf3, Liu Pei-Dong

10 i.e2 Now: 011: 10••..l:.e8 012: 10•••dxc4

141 142

Other moves: a) 1O... b611 0-0 (11 a3!?) 11....i.xc3 12 'ii'xc3 'ili'xc3 13 bxc3 i.a6 14.l:.fel l:.ac8 = Skriwanek-Hanisch, Mecklenburg 1994/5. b) 1O... i.d711 0-0l:.ac8 (11...l:.fe8!? 12 .l:.fdl e5 with counterplay) 12 l:tfc1

7 t'iJd2 i.b4: MAIN LINE (8 'iVc2 0-0) (12 a3!?) 12.. :ji'c7 13 a3 ~d6 14 h3 l:i.fe8 =Bellon-Ridameya Tatche, Ma1aga2000. c) 1O... ~xc3 11 'ilixc3 (11 bxc3, Schuil-Van den Akker, Haarlem 1998, 11...l:i.e8!? 120-0 'ilic7 13 cxdS exdS 14 i.d3 cS =) 11...ii'xc3 12 bxc3liJe4 (Ferre-Canet, France jr tt 1996) 13liJxe4 dxe4 ;to d) 1O ... cS and then: d1) 11 dxcS ~xc3 12 'ii'xc3 'ilixcs 13 0-0 dxc4 14 'ilixc4 'ii'b6 = Litmanowicz-Teodorescu, Split 1963. d2) 11 liJb3 'ilic7 (11...i.xc3+ 12 ii'xc3 'ilixc3+ 13 bxc3 cxd4 14 cxd4 dxc4 IS i.xc4 b6 16 f3 i.b7 ;t 1/2-1f2 Postny-Fressinet, Oropesa del Mar U18 Wch 1999) 12 dxcS dxc4 13 ~xc4 i.xcs 14 i.d3 i.e7 IS l:.ell:i.d8 =. d3) 11 0-0 and then: d31) 11...i.xc3 12 'ilixc3 (12 bxc3 'ilic7 13 l:i.ael i.d7 14 cxdS, JanischKeuschnig, Austrian Cht 1994, 14...exdS =) 12 ... 'ilixc3 13 bxc3 cxd4 (13 ... b6!?) 14 cxd4 ;t Roh1-Schinke, Nakensdorf 1995. d32) 11...cxd4 12 exd4 ~xc3 13 bxc3 dxc4 14liJxc4 'ilic7 IS liJe3 b6 = McCambridge-Minev, 1984. e) 1O... 'ilic7 11 a3 i.e7 12 liJf3 b6 (12 ... dxc4!? 13 i.xc4 cS with counterplay) 13 .:tel cS 14 dxcS bxcS IS 0-0 i.b7 with equality, Junek-Hora, Prague 1966.

011) 10••• l:i.e8 Preparing ... eS, activating Black's pieces. 11 0-0 11 f4 cS 12 0-0 i.d7 13 a3 i.xc3 (Vukovic-Milic, Novi Sad 1945) 14 'iVxc3 ii'xc3 IS bxc3 .:tac8 =.

141

11 •..e5 1l...g6 12 a3 ~f8 13 b4 'ii'd8 14liJf3 (14 cS, Werner-Wasnetsky, Endingen 1987, 14 ... eS gives Black counterplay) 14 ... dxc4 IS i.xc4 ;to 12 dxe5 Worse are: a) 12 cxdS exd4 (12 ... ~xc3 13liJc4 ii'xdS 14 bxc3 exd4 IS cxd4, Martinez-Bo1bochan, Buenos Aires 1946, lS ... ~g4!? 16 ~xg4liJxg4 =) 13liJb3 'iVd8 14 liJxd4liJxdS IS l:.ad 1liJxc3 16 bxc3 i.d6 17 i.d3 g6 = FriedemannKeres, Tallinn 1935. b) 12liJb3 'ilic7 (12 ...'ilid8 13 dxe5 .:txeS 14 l:.fd1, Keller-Fink, Vienna 1939,14 ...~fS IS i.d3 i.xd3 16l:.xd3 'ilie8 =) 13 cxdS i.xc3 14 ii'xc3liJxdS 15 'ilic2 'ii'e7 = Bakalarz-Sott, Trinec 1998. c) 12 a3 i.d6 (after 12... i.f8, SeitzSpielmann, Dortmund 1928, 13 dxeS!? l:.xeS 14 cxdS cxdS IS l:i.fel gives White a slight advantage) 13 cxdS exd4 14liJc4 'ilic7 IS liJxd6 'ilixd6 16 exd4 cxdS = Bilse1-Femmel, COIT. 1999. 12•••l:i.xe513 cxd5 ~f5!? Or 13 ...~xc3: a) 14 bxc3 cxdS (14...liJxdS, KruttiPaal, Eger 1993, IS liJc4! 'ii'xc3 16 'ilixc3 liJxc3 17 liJxeS liJxe2+ 18 'it>h 1 i.fS 19 .:tfe1 ;t) IS l:.ab1 'ilic7 is equal, Pomar-Ribera, Madrid 1943. b) 14 liJc4!? i.fS (14 ... 'ilixdS IS .:tfd 1 'ilie6 16 .:td8+ liJe8 17 'ilixc3 .:tdS 18 l:.d1 ±) IS 'ilib3 'ilixdS 16 .:tfd1 ii'bS 17 bxc3 .:tdS 18 liJd6 'ilixb3 19 axb3 is slightly better for White. 14 'ikb3 cxd5 14... i.xc3 is met by lSliJc4. 15 liJf3 .:tee8 16liJd4 ~e6 17 .:tac1 .:tac8 18 .:tfdl White has slightly better chances.

142

THE CAMBRIDGE SPRINGS

012) 10••.dxc4 This brings about a familiar type of position, with possible transpositions to lines considered earlier. llltJxc4 (D) Or 11 i.xc4 e5 12 ltJb3 (12 dxe5 'it'xe5 13 0-0 i.g4 =+= Cecin-Jomanta, Szombathely girls U-16 Ech 1993) 12... i.xc3+ 13 'it'xc3 'it'xc3+ 14 bxc3 liz-liz Adam-Gradl, Bad Laasphe 1994.

B

Now there are just two significant moves that we have not already discussed: 142 D121: 1l .•.'it'g5 142 D122: 1l .••i.xc3+ 11.....c7!? - 8... dxc4 9.ixj6ltJxj6 10 0ac4 'tic7 11 i.e2 0-0. This is a main line from the previous chapter (Line E264) where White maintained a slight advantage.

0121) 1l ..JWg5 This square was an unfortunate one in several lines we considered earlier, and here too it brings Black little joy. 120-0 12 i.f3ltJd5 and then:

a) 13 0-0 -12 0-0 ltJd5 13 i..j3. b) 13 h4 (Vaatainen-Filen, COIT. 1995) 13 ... 'it'd8!? 00. c) 13 a3 (Palkova-Martinkova, Chrudim 1994) 13 ... i.e7 14 b4;1;;. 12•.•.l:td8 Other moves: a) 12... ltJd5 13 i.f3 (13 f4 'ii'h6 14 l:tf3 f5 15 ltJe5 ;I;; Loffler-Hoesl, Porz 1990; 13 ltJe4 'it'd8 14 ltJe5 ;I;; Schleifer-Dumesnil, Montrea11997) 13 ...'ii'd8 14l:tadlltJe7 15 e4 (15 a3!?) 15 ... ltJg6 16 a3 i.e7 (Ribic-Knaus, Zurich 1989) 17 d5! ±. b) 12... i.xc3 13 bxc3l:td8 (13 ... ltJd7 14 f4 'it'e7 15 i.d3 ± Gempe-Selle, Germany 1995/6) 14 i.f3l:tb8 15l:tabl ± Negri-Ariston, e-mail 1995. c) 12 ... c5 13 a3 (13 f4 'ii'g6 14 i.d3 'it'h5 15 l:tf3 cxd4 16 exd4 and the threat of 17 l:th3 makes Black's position very difficult) 13 ... i.xc3 (13 ... cxd4 14 axb4 dxc3 15 ltJb6 ± Krutti-Szep, Aggtelek 1994) 14 bxc3 .l:td8 15 i.f3 l:tb8 16 'ii'a4 ;I;; / ±. 13f4 Or 13l:tadl i.d6 14 f4 ±. 13•..'ii'g6 13... 'ii'h6 14l:tf3 g6 15 a3 i.e7 16 b4 ltJd5 17 ltJe4 ± Lindstrom-Johansson, COIT.1999. 14 i.d3 'ii'h6 15l:tf3 g6 16 'ii'a4 as 17ltJb6 White has an advantage.

0122) 1l ..•i.xc3+ 12 bxc3 12 'ii'xc3!? 'ii'xc3+ 13 bxc3 i.d7 14 i.f3 l:tfd8 15 a4 .l:tac8 16 'itid2 (16 a5 !?) 16 ... l:tc7 17 l:thbl i.c8 18 a5 ± Alekhine-Bogoljubow, Heidelberg Wch (9) 1929. 12••.'it'c7

7 tiJd2 iLb4: MAIN LINE (8 'ilVc2 0-0) 12...1i'd5 13 0-0 l1d8 (13 ... c5 1411adl l.tb8 {14 ....i.d7!?} 15 ttJe5 cxd4 16 cxd4 ± Filipovit-Kizilkaya, Rimavska Sobota U-14 Ech 1996) 14 ttJe5 1i'a5 15 e4 c5 (Erickson-Bailey, COIT. 1993) 16 ttJc4 1i'c7 17 e5 ttJe8 18 .l:.fdl is slightly better for White. 13e4 Other moves fail to give White an advantage: a) 13 l.tbl c5 140-0 b6 15 ii.f3 l1b8 1611fc1 .i.b7 17 ii.xb7 l:.xb7 18 ttJe5 .l:.d8 =Griffin-Abdul Karim, Sharjah jr Wch 1985. b) 13 .lid3 (Mamboini-Rochel, COIT. 1993) 13 ... b6!? intending ... ii.a6 with counterplay. c) 130-0 b6 and now: cl) 14 e4 .i.a6 15 f3 .l:.fd8 16 .l:.fdl c5 17 l:.ac1 .l:.ac8 = Mulyar-Scheidies, Boulder 1993. c2) 14tiJd2c515.l:.ac1.i.b716ii.f3 ii.xf3 17 ttJxf3 =Mottinger-Greul, Bavaria 1999. c3) 14.lif3 ii.a6 15 1i'a4 ii.xc4 16 1i'xc4 l:.ac8 17 g3 c5 = Ruzzier-Rossi, Bolzano 2000. c4) 14 a4 was played in the game Znosko-Borovsky - Loman, Scheveningen 1923, and now 14 ... c5 15 .l:.fdl ii.b7 161i'b2 .l:.fc8 17 a5 cxd4 18 cxd4 bxa5 is equal. c5) 14 ttJe5 ii.b7 15 ii.f3 (15 f4 c5 16 ii.f3 .l:.ac8 {l6 ... .i.xf3!? 17 l:.xf3 .l:.fd8 with good play for Black} 17 ii.xb7 1i'xb7 = Baier-Hanisch, Mecklenburg 1997/8) 15 ... c5 16 .i.xb71i'xb7 17 c4 .l:.ac8 with equality, CazzanigaRossi, Corsico 1996. 13...c5 13 ...1i'f4 (Thomsen-Grahn, Copenhagen 2001) 14 e5!? ttJd5 15 .i.d3 ;t 14 e5 ttJe8!?

143

14... ttJd5 15 .i.d3 (Klawitter-Luth, Pinneberg 1997) 15 ... f5 160-0 b6 17 ttJd6 ii.b7 18 l1fc1 with a slight advantage for White. 151i'e4.i.d7 16 .i.d3 g6 17 0-0 l1d8 181i'h4 White has a small advantage but Black has counterplay. 02) 10 .i.d3 (D)

B

This move would have been impossible without the preliminary exchange on f6. Now Black has many possibilities: 021: 10...h6 144 022: 10...c5 145 023: 10...b6 145 024: 10...ii.d7 146 025: 10...1i'c7 146 026: 10....l:.e8 146 Other continuations: a) 1O ... dxc4 11 ttJxc4 1i'g5 (the alternative 11.. ..i.xc3+ 12 bxc3 1i'c7 transposes to B... Lc3?! 9 bxc3 dxc4 10 Lf6 lilxf6 11 tDxc4 'iVc7 12 .i.d3 0-0) 120-0 (12 g3 b5 13 ttJe5 ii.b7 14 b4, Kajfes-Brenc, Croatian Cht 1998, 14...'ii'h5 15 ii.e2 t) 12 ...ii.e7 13 f4

144

THE CAMBRIDGE SPRINGS

'i¥h6 14 .:I.f3 ;I; Coquard-Henneteau, 1998. b) 1O.....txc3 11 bxc3 and here: bl) l1...b6 12 a4 dxc4 13 lbxc4 'ii'g5 140-0;1; Cabero-Garcia Iglesias, Asturias Cht 1999. b2) 1l...':e8 12 f4 g6 13 0-0 (Ovchinikova-Dymshits, St Petersburg 2000) 13 ... 'ii'c7 14 e4 dxe415lbxe4lbxe4 16 ..txe4 ;1;. b3) 11 ...dxc4 (112-112 Gerlach-Schwab, Ansbach 1985) 12lbxc4 -1O... dxc411 lDxc4 i.xc3 + 12 bxc3. b4) 11...'ii'c7!? 12lbf3 (12f4 c5 13 0-0, Gooding-Saunders, London 1925, 13 ... ':d8!? 14 lbf3 b6 15 lbe5 ..ta6 with good play for Black) and now: b41) 12 ...h6 13 lbe5 lbd7 14 f4 lbxe5 15 fxe5;1; Oviedo-Palacios, Buenos Aires 1999. b42) 12... c5!? 13lbe5 (130-0 dxc4 14 ..txc4 b6 15lbe5 ..tb7 =) 13 ... b6 14 0-0..ta6 15 :fdl dxc4 16lbxc4 ..txc4 17 ..txc4 a6 18 ..td3 ':fc8 =. b43) 12 ... b6 13 0-0 ..ta6 14 lbe5 dxc4 (14 ... c5!? with counterplay) 15 lbxc4 'iti>h8 16 h31bc8 17lbe5 ..txd3 18 'ii'xd3 c5 with equality, NakagawaHaque, Dubai worn OL 1986. c) 1O... ..td6 and then: c1) 11 0-0 'fic7 (11...e5 12 cxd5 cxd5 13 lbb5 ..tb8 14 dxe5 ..txe5 15 lbf3 ..tb8 16 :fc1 ;I; Federau-Kanonenberg, Hochspeyer 1967) 12lbf3 dxc4!? 13 ..txc4 e5 =. c2) 11 c5 ..te7 (11.....tb8 12 f4 'ii'c7 13 0-0;1;) 120-0 'ii'c7 13 f4 b6 14 b4 a5 15 lba4 bxc5 16 bxc5 ..ta6 17 ..txa6 :xa6 18 :abl ;I; Biro-Timar, Cseppko 1999. d) 1O .. J:td8 11 0-0 and now: dl) 11.....td7 (Johner-Tarrasch, Trieste 1923) 12 c5 ;1;.

d2) 11.....tf8 12 ':adl 'ii'c7 13 lbf3 b6 14 cxd5 exd5 (Przepiorka-Spielmann, Meran 1924) 15 ':cl!? c5 16 dxc5 bxc5 17 e4 is slightly better for White. d3) 1l.....txc3 12 bxc3 dxc4 13lDxc4 'fic7 14 lbe5 h6 15 f4 ;I; McConnellBrunet, COIT. 1936. d4) 11...'fic7 12 :ac1 ..td6 13 Whl 'ii'e7 14 c5 ..tc7 15 lbf3 h6 16 b4 e5 is equal. 021) 10.•• h6 Black cannot expect to equalize with such a passive response. 11 0-0 :e8 Or: a) l1...e5 12 dxe5 lbg4 13 cxd5 cxd5 (Kraidman-Beyen, Lugano OL 1968) 14 lbf3! ..txc3 15 'ii'xc3 'ii'xc3 16 bxc3 :e8 17 :fdl ±. b) 11.....td7 12 a3 ..txc3 13 bxc3 (13 'ilt'xc3 'ii'xc3 14 bxc3, HemandezSamame, Lima Ch 1999, 14 ... b5 15 cxb5 cxb5 16 lbb3 :tfc8 17 lbc5 =) 13 ...'ilt'c7 (Wustenienhaus-Gruschinski, Koblenz 1990) 14 :abl b6 15 cxd5 exd5 16 c4;1;. 12lbf3 Other moves: a) 12 a3 ..txc3 13 bxc3 e5 14 cxd5 'ii'xd5 (l4 ... cxd5 15 dxe5 :xe5 =) 15 ..tc4 'ilt'd6 =. b) 12 lbb3 'ilic7 13 a3 ..td6 14 h3 dxc4 15 ..txc4 e5 =Marques-Pinheiro, Pouso Alegre 1998. c) 12 f4 (Diaz-Benitez, Pinar del Rio 1999) 12... 'iIt'd8!? 13 a3 ..te7 14 b4 b6 15 c5;1;. 12.....td6 13 :fdl 13 c5!?;I;. 13.....td714 a3

7 CiJd2 ii.b4: MAIN LINE (8 'tie2 0-0) Wohlfahrt-Pils, Austrian Cht 1991. Black should now play 14... dxc4 15 i.xc4 c5;1;;.

022) 10...c5 We can find no advantage for White after this thrust. 11 0-0 Alternatively: a) 11 dxc5 dxc4 12 ttJxc4 'it'xc5 13 0-0 (Kuligowski-Nikolac, Lublin 1976) 13 ... b5 14 ttJe4 ttJxe4 15 i.xe4 l:lb8 with equality. b) 11 ttJb3 'fIIc7 12 dxc5 dxc4 (or 12 ... i.xc5 13 ttJxc5 'it'xc5 14 cxd5 exd5 15 0-0 i.e6 16 l:lfdl ;I;; OrelRiznar, Bled 1992) 13 i.xc4 i.xc5 14 ttJxc5 'it'xc5 15 i.d3 i.d7 16 0-0 (16 ttJe4? ttJxe4 17 i.xe4 'fIIb4+ 18 'iitf1 l:lac8 19 'fIib1 f5 is winning for Black, Sher-Smagin, Hastings Masters 1990) 16 ... l:lac8 (16 ... i.c6 17 l:lfdl l:lfd8 18 ttJe4 ttJxe4 19 i.xe4 'fIIxc2 20 i.xc2 'iitf8 is equal, Caro-S.Rubinstein, TelAviv 1964) 17 l:lacl i.c6 (17 ... 'it'e5 18 'fIIe2 lHd8 19 l:lc2 i.c6 = KralovecSmagin, Oberwart 1991) 18 'fIIe2 'it'g5 19 f3 l:lfd8 20 l:lfdl h5 = ProkopRunza, Prague 1936. 11...cxd4 12 exd4 Worse is 12 ttJb3 (Jarmoluk-Garbarino, San Isidoro 1993) 12 ...'flld8!? 13 ttJxd4 (13 exd4 dxc4 14 i.xc4 i.d7 15 l:lac1 l:lc8 16 'it'e2 i.d6 +) 13 ... e5 14 ttJb3 dxc4 15 i.xc4 'it'c7 16 ttJe4 i.e6

+. 12.••.1i.d7 13 c5 13 ttJb3 'it'c7 14 cxd5 exd5 15 ttJe4 ttJe8 =. 13.••l:lfe8 14 ttJf3 i.xc3 15 'it'xc3 'it'xc3 16 bxc3 b6 17 cxb6 axb6 The ending is equal.

145

023) 10••• b6 This leads to more unbalanced play than the previous line, but is also satisfactory. 11 0-0 i.xc3 12 bxc3 .1i.a6 (D)

13a4 Or: a) 13 e4 dxe4 14 ttJxe4 ttJxe4 15 i.xe4 h6 with good play for Black. b) 13 f4 dxc4 14 i.xc4 (14 ttJxc4 .1i.xc4 15 i.xc4 ttJd5 16 .1i.xd5, PoltlKranewitter, Gleisdorf 1998, 16 ... exd5 +) 14... i.xc4 15 ttJxc4 'fIIf5 with an equal position. 13.••dxc4 14 .1i.xc4 Or 14 ttJxc4 .1i.xc4 (14 ... 'it'd5 15 e4 'fIIh5 16 a5 .1i.xc4 17 i.xc4 gives White a slight advantage, Sarwinski-Panczyk, Warsaw 1981) 15 i.xc4 l:lfd8 with equality. 14••.i.xc415 ttJxc4 'fIId5 16 ttJe5 c5 17.:tfdl 17 .:tael cxd4 18 exd4 (18 cxd4 l:lfc8 =) 18 ... l:lac8 with good play for Black, Goldschlager-Panczyk, Strasbourg 1980. 17.••cxd418 cxd4 .:tac8 The position is equal, SchoepplSecula, Hallein 1988.

146

THE CAMBRIDGE SPRINGS

024) 10.••.i.d7 Black prepares to brings his rooks into play, and will make a pawn-break when appropriate. 11 0-0 :tfeS Instead: a) 11...:tad8 12 a3 .i.e7 13 b4 'fIc7 14 f4 b6 (Thorbergsson-Agustsson, Icelandic Ch 1973) IS cS ;t b) l1...dxc4 12 lL\xc4 'fIhS 13 lL\e4 (13 f4lL\g4 14 h3lL\f6 ISlL\eS ;1; BurnSchiffers, Berlin 1897) 13 ... lL\xe4 14 i.xe4 i.e7 IS f4 ;1; Schlusnik-Vargyas, Hungary tt 1996. c) 11...:tae8 12 a3 .i.xc3 13 'fixc3 ~xc3 14 bxc3 eS IS cxdS cxdS 16 :tabl ;1; Podhorzer-Igel, Vienna 1934. d) 11...'fIc7 12 :tael was tried in the game Csomos-Munkacsy, Hungary 1995, and now 12.. JHd8 13 'fib3 i.d6 14 h3 dxc4 ISlL\xc4 eS 16lL\xd6 'fixd6 is slightly better for White. e) 11...i.xc3 12 bxc3 :tfc8 13 :tabl (13 f3, Kuiper-Kerski, Germany jr 1997, 13 ...:te8!? 14 :tabl b6 IS e4 eS with counterplay) 13 ... b6 14 cS ;1;. f) 11 ... l:tfc8 (Dance-Zalys, Montreal Ch 19S1) 12 cS l:te8 13lL\f3 i.xc3 14 bxc3 b6 ISlL\d2 eS 16 a4;1;. g) 11...:tac8 12 a3 (12lL\b3 ~c7 13 l:tael dxc4 14 i.xc4lL\g4 IS g3, Muhlbauer-Reindl, Bavaria 1997, IS ...eS with counterplay) 12... i.xc3 13 lL\b3 (13 ~xc3, Keller-da Silva, Bad Worishofen 1992, 13 ... 'fIxc3 14 bxc3 cS IS :tabl b6 16 ':'fel :tfd8 =) 13 ...'fic7 14 ~xc3 (Szuveges-C.Nyberg, Elista worn OL 1998) 14 ... lL\g4 IS g3 eS 16 cxdS ;1;. 12 f4 12 a3 i.xc3! 13 bxc3 eS 14 cxdS cxdS IS dxeS :txeS 16 l:tfel ':'c8 =. 12...cSI3 a3

13lL\b3 'fic7 14 dxcS dxc4 IS i.xc4 i.xcs 16lL\xcS 'iixcs 13••.i.xc3 14 'fixc3 'fixc3 15 bxc3 l:tacS The endgame is equal.

+.

025) 10...'fIc7 The queen drops back, often to support the ... eS advance. 11l:tc1 Alternatives: a) 11 0-0 eS 12 cxdS exd4 (alternatively, 12 ... cxdS 13 dxeS 'fixeS 14lL\f3 'fihS IS lL\e2 i.d6 16 lL\ed4 i.g4 = Sevcak-Hora, Prague 1966) 13 lL\bS 'fid8 (13 ...'fiaS 14lL\b3 'fib6 ISlL\Sxd4 cxdS 16 l:tael ;1; Kostic-Jaffe, Karlsbad 1911) 14 dxc6 dxe3 IS fxe3 bxc6 16 lL\d4 lL\g4 17 lL\2f3 lL\xe3 18 'fIb3 cS 19 i.xh7+ rJilh8 20 'fixe3 cxd4 21 'fie4 .i.a6 22 ':'f2 'fIe7 =. b) 11 a3 i.e7 (11...i.d6 12 cS ioe7 13 lL\f3 b6 14 b4 ;1; Bahari-Mohd Nor, Malaysia 1996) 12 cxdS exdS 13 :tel a6 14 h3 iod6 IS 0-0 l:te8 16 l:tfeli.d7 17lL\f3l:te718b4l:tae819'fibl 'fic8 20 .i.n i.fS 21 'fIb2 112-112 SkembrisBorgo, Cutro 2000. 11...eS 12 dxeS 'fixeS 13 cxdS cxdS 13 ... i.xc3!? 14 bxc3 'fixdS ISlL\e4 lL\xe4 16 i.xe4 'fibs =. 14lL\f3 'iihS ISlL\d4 Or IS 'fIb3 i.h3 (AzmaiparashviliIvanchuk, Moscow rpd 1994) 16 ion ioxc3+ 17 bxc3 b6 18 lL\d4 iog4 with good play for Black. IS ...i.g4 16 h3 i.xc3+ 17 bxc3 ioe61S 0-0 The chances are level. 026) 10...l:teS11 0-0

7 l'Dd2 i.b4: MAIN LINE (8 'iVc2 0-0) Other continuations: a) 11 a3 e5 (Lemanczyk-Vedder, Germany 199617) 12 dxe5 ':'xe5 13 0-0 ~xc3 14 bxc3 =. b) l1':c 1 e5 12 dxe5 ':xe5 13 ttJf3 l:te8 14 a3 ~xc3+ 15 'ii'xc3 'ii'xc3+ 16 l:txc3 is level, Rauch-Fiedler, Germany 1993/4. c) 11 cxd5 exd5 120-0 (GandolpheHenneteau, Cannes 2000) 12 ... ~d6 13 1:t.fel ':'e7 14 l:tacl ~e6 15 h3 ':ae8 16 a3 'ii'c7 =. d) 11 ttJb3 'ikc7 (or 1l...'ikd8 12 a3 ~xc3+ 13 'ii'xc3, Vacek-Smajzr, Turnov 1997, 13 ... dxc4!? 14 ~xc4 ttJd5 15 'ii'c2 e5 =) and then: dl) 12 0-0-0 dxc4 13 ~xc4 e5 14 ~bl ~xc3!? (14 ... ~e6 15 ~xe6 ':'xe6 't Romanovsky-Tartakower, Moscow 1925) 15 'ii'xc3 ~f5+ 16 ~al ttJe4 with an initiative. d2) 120-0 dxc4 13 ~xc4 ttJg4 (or 13 ... e5 14 ttJe4, Fairhurst-Winter, London 1927, 14 ... 'ii'e7 15 ttJg5 ':'f8 16 dxe5 'ii'xe5 ;!;) 14 g3 e5 with counterplay. e) 11 f4 c5 (l1...b6 12 0-0 ~xc3 13 bxc3, Griinfeld-Spielmann, Moscow 1925, 13 ... i.a6!? 14 e4 dxe4 15 ttJxe4 ttJxe4 16 ~xe4 ~xc4 17 ~xh7+ 'it>f8 =) 12 0-0 ~xc3 (12 ... cxd4 13 exd4 dxc4 14 ttJxc4 'iVd8 15 ttJe2 b6 =) 13 bxc3 'ikc7 14 ':'f3 b6 (NilssonEklund, COIT. 1990) 15 l:tan =. We return to 11 0-0 (D). Now Black has a choice of two satisfactory methods: 147 D261: 1l ...e5 D262: 1l••. ~xc3 148 Or 1l...'ii'c7 12 ttJf3 b6!? (12 ... dxc4 13 i.xc4 ~d6 14 ttJe4 ttJxe4 15 'ii'xe4 ;!; Ktihl-Kunz, Pizol 1998) 13 l:tfcl

147

B

dxc4 14 i.xc4 ~b7 15 ttJe4 ~e7!? 16 ~d3 ttJd5 17 ttJed2 h6 18 a3 ;!;.

0261) 1l•••e5 12 cxd5 Other continuations: a) 12 dxe5 ':'xe5 and now: al) 13 ttJf3 l:te8 14 ttJe2 ~g4 15 ttJed4 dxc4 16 ~xc4 led to an excellent game for Black in Colle-Spielmann, Meran 1924. a2) 13 a3 ~xc3 14 'ikxc3 (14 bxc3 ~e6 =) 14... 'ii'xc3 15 bxc3 ~e6 16 ttJf3 ':h5 with good play for Black, Wandall-Korning, N0ITesundby 1942. a3) 13 ttJb3 'iVc7 14 cxd5 (or 14 ttJe2, Klapsch-Teuschler, Graz 1994, 14... dxc4!? 15 'ii'xc4 ~d6 16 'ikc2 l:te8 17 h3 i.e6 with good play for Black) 14 ... .:.h5 and then: a31) 15 h3 i.xc3 16 bxc3 (16 'ii'xc3 i.xh3!) 16... ~xh3! 17 gxh3 'ii'd718 f3 ttJxd5 19 ~f2 'ii'xh3 20 l:thl (the only move; 20 'ii'd2? ':'e8 +) 20 ... 'ii'xhl 21 ':'xhl l:txhl 22 ~e2 ':'h2+ 23 ~el (23 'it>gl ttJxe3 24 'ii'd3 l:tg2+ 25 'it>hl ttJd5 't) 23 ... ttJxe3 24 ~e4 ttJd5 is a little better for Black. a32) 15 g3 (Silbermann-Platz, Cologne Ch 1926) 15 ... ~xc3 16 bxc3 l:txd5 't.

148

THE CAMBRIDGE SPRINGS

a4) 13 cxd5 Jtxc3 14 ~c4 ~d8 (14 ... ~xd5, Schwartzman-Grau, Mar del Plata 1934, 15 e4! ;1;) 15 ~xc3 :xd5 16 ':adl i..f5 = Cintron-Marshall, Bradley Beach 1929. b) 12 ~b3 ~c7 (12 ...~d8 13 cxd5 i..xc3, Meiser-Goebel, Germany 1998, 14 bxc3 =; 12 ... ~6 13 dxe5 ':xe5 14 cxd5, Abel-Tischer, Oberhof 1999, and now 14... Jtxc3 15 ~xc3 ':xd5 =) 13 cxd5 Jtxc3 14 ~xc3 e4 15 Jte2 ~xd5 16 ~c5 b6 with good play for Black, Raub-Grimm, corr. 1993-5. c) 12 a3 i..d6 (Sanchez-Corte, Buenos Aires 1952; 12 ... JtfS 13 dxe5 ':xe5 14 cxd5 cxd5 15 ~f3 ;I; HonlingerSchulz, Trencianske Teplice 1926) 13 dxe5 i..xe5 14 cxd5 Jtxc3 15 bxc3 (15 ~b3 ~xd5 16 ~xc3 ~g5 17 ~c5 ~xc5 18 ~xc5 b6 19 ~a6 ':e7 =) 15 ... cxd5 16 ':fb1 ~c7 =. 12•••i..xc3 Instead: a) 12 ... cxd5 and now: al) 13 dxe5 ltxe5 and here: all) 14 ~f3 ':e7 (or 14 ...lth5 15 a3, Becker-Spielmann, Vienna 1923, 15 ... Jtxc3 16 ~xc3 ~xc3 17 bxc3 Jtf5 18 i..xf5 ':xf5 =) 15 ~b5 i..d7 16 ~bd4 :c8 = M.Iakobsen-Cvetkovic, Korinthos 1998. a12) 14 ltac1 i..d7 (14 ... Jtg4 15 h3 i..d7 16 a3 ;I; Priehoda-l.Bauer, Sala 1993) 15 ~f3 (15 ~b3 ~d8 16 a3 i..d6 17 ~b5 ':c8 = Schoenberg-Platz, New York 1947) 15 ... lte7 (15 .. J:tee8!?) 16 ~d4 a6 17 ':fd1 ;1;. a2) 13 ~b3 ~d8 14 dxe5 ltxe5 15 ~d4 (15 a3 i..f8 16 ~d4 i..d7 17 ~b3 gives White a slight advantage, EuweGrtinfeld, Karlsbad 1929; 15 ':ad1 i..g4 16 i..e2 ':c8 17 i..xg4 ~xg4 18 ltd4 i..xc3 19 ltxg4, Grtinfeld-Becker,

Vienna 1923, 19... Jtd4 20 ~d2 Jtb6 =) 15 ... a6 16 ltad1 g6 17 Jte2 ;I; DenesYachyshin, Logrofio blind 1998. b) 12... exd4 13 ~b3 ~d8 (13 ... ~6 14 ~xd4 cxd5 15 ':ac1 Jtd7 16 ~3 is a little better for White, Frappier-Zalys, Montreal 1978) 14 ~xd4 (14 ~ ~xd5 15 ~xd4, Ribeiro-Aitken, Munich Z 1954, 15 ... i..a5!? =) 14... Jtxc3 15 bxc3 (15 ~xc3 ~xd5 16 ~c2 {16 ~b3 ~e7 17 ':ad1 i..g4 = Grob-Ribera Arnal, Barcelona 1935} 16 ... h6 17 a3 ~g5 18 ltfe1 i..g4 = Garcia-Pham Ngoc Tanh, Novi Sad worn OL 1990) 15 ... 'ii'xd5 16 ':ab1 (Molinaroli-Philipowski, 2nd Bundesliga 1999/00; 16 c4!?) 16... c5 17 c4 'ii'e5 18 ~f3 ~e7 =. 13~c4 ~d8

13 ...1i'xd5 14 bxc3 exd4 (14 ... e4!? 15 i..e2 i..g4 16 ~e5 Jtxe2 17 ~xe2 'ii'e6 is also equal) 15 exd4 c5 16 ~e3 ~h5 with an equal position, Vojinovic-Lazic, Niksic 1996. 14 bxc3 e4 15 i..e2 cxd5 16 ~e5 ~d717 ~xd7 i..xd7 The position is equal, Kostic-Siichting, Karlsbad 1911.

0262) 1l ••.i..xc3 12 bxc3 12 ~xc3 ~xc3 13 bxc3 e5 14 cxd5 ~xd5 15 ':ac1 i..e6 (15 ... exd4 16 cxd4 i..e6, Nakagawa-Gomez, Buenos Aires OL 1978, 17 ':bl!? :e7 18 ':fc1 ':d8 19 a3 ;1;) 16 a3 ':ad8 17 ~f3 exd4 18 cxd4 h6 19 ':c2 gives White a marginally better ending. 12••.e5 13 cxd5 13 e4 (Pokorny-Marin, London OL 1927) 13 ... dxe4 14 ~xe4 ~xe4 15 Jtxe4 f5 16 i..d3 e4 17 i..e2 i..e6 with good play for Black. 13•••cxd514 dxe5

7 0.d2 .i.b4: MAIN LINE (8 'iWc2 0-0) 14 tiJb3 "c7 15 c4 b6 16 cxd5 'ii'xc2 17 ..txc2 tiJxdS 18 .ie4 .ib7 19 l%fdl :tab8 (Benini-Gresser, Moscow worn Wch 1950) 20 .ixd5 .ixd5 21 dxe5 l%xe5 22 l%d2 ..txb3 23 axb3 a5 =. 14.••l%xe5 15 c4!? 15 l%abl 'ii'c7 16 :tb4 l%h5 with counterplay, Bonet-Salas Romo, Gijon 1944. 15.••l%e7 White has a slightly better position but Black should gradually equalize: 16 tiJb3!? (16 c5 .ie6 17 l%fc1 "d8 18 'ii'a4 :tc7 19 :tc3 tiJd7 20 "d4 l%ac8 21 l:tacl ;!; / =; 16 cxd5 'ii'xd5 17 tiJb3 ..te6 18 l%fdl 'ii'g5 1/Z-1f2 GriinfeldRosselli, Merano 1926) 16..."d8 17 tiJd4 dxc4 18 .ixc4 (18 "xc4 l%c7 19 'ii'b3 b6 20 l%adl .ig4 21 :td2 'fIe7 22 h3 ..td7 23 :fdl ;!; / =) 18 ... .ig4 19 :tac1 l%c8 20 h3 .ie6 21 tiJxe6 l%xe6 22 'ii'b3 l:.e7 23 l%fdl 24 ..tb5 :tec7 25 l:.xc7 l%xc7 ;!; / =.

"f8

149

more modest idea turns out to be more testing. Now: El: 9 ...b6 149 E2: 9...c5 150 E3: 9...l%e8 152 E4: 9...e5 153 Other moves: a) 9 ... a6 10 a3 .ixc3 11 bxc3 dxc4 12 ..txf6 tiJxf6 13 tiJxc4 'fIc7 14 e4 ;!; Milovac-Ascic, Pula 1999. b) 9 ... tiJe4 10 tiJdxe4 dxe4 11 c5 f6 12 .ih4 .ixc3+ 13 bxc3 e5 140-0 ± Stevens-Gaspero, corr. 1995. c) 9 ... h6 10 .ih4 c5 11 0-0 .ixc3 12 bxc3 (Barus-Sugeng, Jakarta 1997) 12 .....c7!? 13 l%adl b6;!;. d) 9 ... dxc4 10 .ixf6 tiJxf6 11 tiJxc4 'ii'c7 - 8... dxc4 9 .ixf6 tDxf6 10 tDxc4 'ii'c7 11 .ie2 0-0. e) 9 ... ..td6 10 0-0 "c7 11 tiJf3 h6 12 .ih4 (Chiquet-Golpaygani, 1998) 12 ... dxc4!? 13 .ixc4 gives White a slight advantage.

E)

9 .ie2 (D)

B

As we have just seen, putting the bishop on d3 (at the cost of having to exchange on f6) allows Black a choice of wholly satisfactory options. This

EI) 9...b610 0-0 .ixc311 bxc3 Worse is 11 "xc3 "xc3 12 bxc3 ..ta613 l%fcl (13 a4 l%fc8 14 l%fcl dxc4 {14 ... c5, Szypulski-Panczyk, Warsaw 1984, 15 ..tf3 ;!;} 15 .ixc4 .ixc4 16 tiJxc4 =) 13 ... h6 (13 ... l%fc8 14 .in dxc4 15 tiJxc4;!; Foisor-Panczyk, Groningen jr Ech 1977/8) 14 .if4 l%fe8 15 ~n e5 with counterplay, Sarosy-Bergrasser, corr. 1975. 11 .....ta612 .ih4 Or: a) 12 a4 dxc4 13 .ixf6 tiJxf6 14 e4 (14 tiJxc4 ..txc4 15 .ixc4 l%ad8 is equal) 14... c5 = Wandel-Roehl, Germany 2000. b) 12 .if4 and now:

150

THE CAMBRIDGE SPRINGS

bl) 12... dxc4 13 ttJxc4 (13 Sl.xc4 Sl.xc4 14 ttJxc4 'iWd5 15 ttJd2 e5 16 c4 'iWe6 17 Sl.g3 l:lac8 18 ttJf3 112-112 Charkhalashvili-Avanesian, Tallinn U-14 girls Ech 1997) 13 ... Sl.xc4 14 Sl.xc4 l:.fc8 15 l:lfcl ;1;. b2) 12 ... l:lfc8 13 a4 dxc4 14 Sl.xc4 (alternatively, 14 ttJxc4 Sl.xc4 15 Sl.xc4 ttJd5 with equality, Euwe-Bogoljubow, Rotterdam (2) 1928/9) 14... Sl.xc4 15 ttJxc4 (P.Schmidt-Bogoljubow, Salzburg 1942) 15 ... 'it'h5 16 a5 ;1;. b3) 12 ... c5 13 a4 cxd4 14 exd4 (14 cxd4!?) 14 ... dxc4 15 ttJxc4 Sl.xc4 16 Sl.xc4 l:lac8 is level, Goldin-Lacrosse, Le Touquet 1992. c) 12 f4 dxc4 (Stelter-Hanisch, Mecklenburg 1994/5; 12 ... l:.ac8 13 a4 dxc414 e4 c5 15 d5 exd5 16 e5 ttJe4 17 ttJxe4 dxe4 18 Sl.g4 is much better for White, Novikov-Lacrosse, Antwerp 1995) 13 Sl.xc4 c5 14 a4 Sl.xc4 15 ttJxc4 'it'a6 16 ttJd6;1;. 12•••l:lac813 a4 dxc414 ttJxc4 Sl.xc4 15 Sl.xc4 White has a small advantage thanks to his bishop-pair, Stempin-Panczyk, Polish Ch 1987.

E2) 9...c5 (D)

w

Now: 150 E21: 100-0 E22: 10 ttJb3 151 The latter is critical, and may give White an edge. After 10 dxc5?! 'iWxc5 11 0-0 Sl.xc3, White is forced into 12 bxc3 (not 12 'iWxc3? d4 -+ Dao Thien Hai-M.Gurevich, Batumi rpd tt 2001) 12... dxc4 13 Sl.xf6 (13 Sl.h4 b6 14 Sl.xc4 {14 l:.fdl, Agnos-Payen, London-Paris 1994, and now 14 ... Sl.a6!? 15 Sl.f3 ttJd5 is slightly better for Black} 14... Sl.b7 15 l:lfc1 'iWh5 =1= Ovseevich-Rapoport, Krasnodar 1996) 13 ... ttJxf6 14 ttJe4 ttJxe4 15 'it'xe4 =.

E21) 100-0 cxd4 11 ttJb3 Or 11 exd4 dxc4: a) 12 Sl.e3 ttJb6 13 ttJxc4 ttJxc4 14 Sl.xc4 Sl.d7 (Benitah-Payen, Enghien les Bains 1995) 15 ttJe4 ttJxe4 16 'iWxe4 b) 12 Sl.h4 ttJb6 13 ttJxc4 ttJxc4 14 Sl.xc4 Sl.d7 (14 ... Sl.e7!? 15 l:lfdl 'iWh5 16 Sl.g3 l:ld8 17 l:lac1;1;) 15 Sl.xf6 gxf6 16 ttJe4!? (alternatively, 16 d5 Sl.xc3 17 dxe6 Sl.xe6 18 Sl.xe6 fxe6 19 bxc3 l:.ac8 112_112 Kramnik-Ivanchuk, Lucerne Wcht 1993) 16 ... Sl.e7 17 'iWb3;1;. c) 12 Sl.xf6 ttJxf6 13 ttJxc4 (or 13 Sl.xc4 Sl.d7 14 'it'd3 Sl.c6 15 ttJde4 Sl.e7 =1= Montanelli-Rossi, 1964) 13 .. :ii'c714 'ii'b3 (14 ttJe4 Sl.e7 15 ttJxf6+ Sl.xf6 with good play for Black, BatzorigFressinet, Menorca U-16 Wch 1996) 14... Sl.xc3 15 bxc3 b6 16 ttJe5 Sl.b7 17 l:lfdl l:lfd8 = Gregor-Suran, Czech Cht 1997/8. 11•••'ii'b6 Worse are:

7 tiJd2 i.b4: MAIN LINE (8 'iVc2 0-0) a) 11..:ii'c7 12 tDbS 'iib6 13 .i.xf6 gxf6 14 cxdS dxe3 IS dxe6 (IS fxe3 ~xe3+ 16 hl, Ionescu-Ovseevich, Pardubice 1999, 16 ... tDeS 17 tDc7 ;t) IS ... exf2+ 16 hl fxe6 17 tDc7 .l:lb8 18 tDxe6 ;t / ± Smimov-Iskusnykh, St Petersburg 2001. b) 1l...'iid8 12 tDxd4 dxc4 (alternatively, 12... .i.xc3 13 bxc3 dxc4 14 .i.xc4 'iiaS IS .i.h4 eS, MamedjarovaDelorme, Oropesa del Mar 2001, 16 tDbS a6 17 tDd6 ;t) 13 tDe4 (13 i.xc4 ~aS 14 tDcbS a6 IS tDb3 'ii'b6 16 tDSd4 ;t Bouwmeester-Bergraser, COIT. 1982-6) 13 ... .i.e7 (13 ... h614.i.h4.i.e7 IS .i.xc4 tDxe4 16 .i.xe7 'iixe7 17 'iixe4 ;t) 14 .i.xc4 tDxe4 IS i.xe7 "fixe7 16 "fixe4 tDf6 17 'iieS 'ii'b4 18 iVbs =(18 b3;t) 18 ... 'iixbS 19 .i.xbS a6 20 .i.e2 i.d7 112-112 Cramling-L.B.Hansen, Stockholm 1993/4. 12 exd4 Other moves: a) 12 tDa4 "fiIc7 13 tDxd4 dxc4 14 .i.xc4 (Flumbort-Volkmann, Zalakaros 1997) 14... "fiIaS 15 a3 (15 .i.xf6 tDxf6 16 a3 .i.e7 17 .i.b5 a6 18 b4 "fiId8 19 .i.d3 .i.d7 =) IS ..."fixgS 16 axb4 a6 17 f4 "fiIh6 18 :f3 g6 19 tDcS eS is unclear. b) 12 .i.xf6 tDxf6 (12 ... dxc3 13 .i.xc3 .i.xc3 14 "fixc3 tDf6 IS .i.f3 ;t 112-112 Vera-Bmzon, Las Tunas 2001) 13 cS "fiIc6 (13 ... d3, Lesiege-Smagin, Montreal 2000, 14 "fixd3 "fiId8 IS :ac1 b6 16 "fid4 bxcS 17 tDxcs "fib6 18 tD3a4 "fiIb8 19 a3;t) 14 exd4 as IS tDcl (1S a3 .i.xc3 16 "fixc3 a4 17 tDd2 b6 18 .l:lfcl .i.a6 =) IS ... .i.xc3 16 "fixc3 b6 17 tDd3 tDd7 18 :ac1 .i.a6 with an equal position. 12•.•dxc4 13 .i.xc4 .i.d6!? Or:

151

a) 13 ... .i.xc3 14 bxc3 (14 'ii'xc3lDe4 IS 'iie3 tDxgS 16 'iixgS tDf6 = MrvaGdanski, Krynica 1998) 14 ..."fic7 (or 14 ...'iic6 IS i.d3 b6 16 f3 ;t PeekRoyer, Groningen open 1997) IS "fie2 (IS .i.d3 b6 16.i.h4 .i.b7 17 i.g3 'iic6 18 f3;t Zanten-Tiggelman, COIT. 1995) IS ...b6 (1S ... tDe4 is a tactical idea borrowed from lines of the Nimzo-Indian: 16 'iixe4 "fiIxc4 17 .l:lfel!? tDb6, Azmaiparashvili-Ivanchuk, Tilburg 1994, 18 .i.d2;t) 16l:tac1 .i.b7 17 .i.d3l:tfe8 ;t 18 c4 (18 l:tfe 1 tDdS 19 i.e4 h6 112-112 Novikov-Smagin, Novgorod 1995) 18 ...eS 19 dS 'iid6 20 :fel lh- 1h BassLein, New York 1983. b) 13 .. :ii'c7 14 'ii'e2 (14 tDbS 'ii'c6 IS a3 i.e7 16 tDaS {16 'ii'e2 a6 17 tDc3 bS 18 i.d3 .i.b7 19 f3 'ii'b6 = Rahman-Prakash, Guntur 2000} 16... 'iib6 17 b4 a6 18 tDc3 'ii'xd4 19l:tadl 'ii'g4 20 f4 with compensation, Azmaiparashvili) 14 ... a6 IS l:tacl h6 (1S ... i.d6 16 i.d3 'ii'b8, Alexandrova-Ovseevich, Alushta 2000, 17 ~h 1 b6 18 tDe4 tDdS 19 tDxd6 'iixd6 20 tDd2 ;t) 16 i.h4 i.d6 17 i.g3 ;to 14 "fiIe2 a615l:tac1 h616 i.e3 'ii'd8 16 ...'ii'c7!? leads to more complicated positions; e.g., 17 h3 (17 f4 'it'b8 18 .i.d3 b6 19 tDd2 i.b7 20 tDc4 bS 21 tDa5 .i.dS "") 17 ... l:td8 18 l:tfe 1 'ii'b8 19 tDcs bS 20 .i.d3 .i.b7 21 b4 i.c6 "". 17 tDc5 "fiIe7 The game is level, Nimzo-Junior, Stoby 1999. E22) 10 tDb3 "fia4 Other moves: a) 1O... .i.xc3+ 11 bxc3 "fia4 12 cxdS c4looks tempting, but White has an effective reply: 13 "fiIb2 tDxdS 14 e4 (14

152

THE CAMBRIDGE SPRINGS

4Jd2, Azmaiparashvili-Ivanchuk, Moscow rpd 1994, 14... 4J7b6!? IS e4 h6 16 i.h4 4Jf4 17 i.f1 i.d7 with active counterplay for Black) 14... 4JSb6 IS 4Jd2 (1S 4JcS'iic6 16 4Jxd7 i.xd7 17 i.f3 eS 18 dxeS lHe8 19 i.e3 .:txeS 20 O-O;!;;) IS ... eS 16 dS fS 17 lIdl 4Jf6 18 f3 fxe4 19 fxe4 with a slight advantage for White. b) 1O... 'iVc7 11 0-0 dxc4 12 i.xc4 cxd4 13 4JbS 1ib8 14 4JSxd4 i.d6 IS f4 h6 (IS ... 4JdS!?) 16 i.h4 a6 17 i.e2 4JdS 18 'iid2 and White has a small advantage in a complicated position, Ivanchuk-Kasparov, Frankfurt rpd 1998. 11 i.xf6 11 cxdS c4!. 11 ...4Jxf6 12 dxc5 Or 12 0-0 i.xc3 13 'iixc3 cxd4 (13 ... 4Je4 14 'iid3, Volodin-Orso, Budapest 1990, 14 ... dxc4 IS'iixc4'iixc4 16 i.xc4 cxd4 17 4Jxd4 =), and here: a) 14 4Jxd4 dxc4 (14 ... i.d7 IS cxdS 4JxdS 161ib3 'iixb3 17 4Jxb3 lIac8 18 i.f3 lIc2 =Aseev-Oll, Moscow 1995) IS i.xc4 i.d7 16 i.b3 'iia6 17 'iib4 l:.ac8 = Efimov-Kappler, French Cht 1994. b) 14 'iixd4 dxc4 IS 4JcS 'iic6 16 i.f3 4JdS 17 lIfc 1 b6 18 4Jd3 'tlVe8 19 'iixc4 i.b7 20 'tlVb3 112-112 Ionov-Oll, Vilnius 1997. 12•.•dxc413 i.xc4'iic614 0-0 i.xc5 154Jxc5!? Worse are: a) IS i.e2 i.d6 16l:Hdl i.d7 17 h3 i.eS 18 l:.ac1 lIac8 19 i.bS 'iixbS 112_112 Lobron-Ivanchuk, Munich 1994. b) IS i.bS1ib6 (IS ...'iic7 16 4JxcS 'iVxcs 17 'iid3 a6 18 i.a4 bS 19 4Je4 4Jxe4 20 'iixe4 l:.b8 = Mannke-Kaluzny, Lubniewice 1981) 16 a4 i.e7 17 as 'iic7 18 l:.a4 a6 19 i.e2 bS 20 axb6

'iVxb6 =Kelecevic-Lacrosse, Liechtenstein 1999. 15.••'iixc5 16 4Je4 4Jxe4 17 'iixe4 'iib6 18 i.d3 g6 19 'iVe5 White has a small advantage - Lobron. E3) 9...lIe8 (D)

w

This is a generally useful move, but it is not clear that it really helps Black achieve the ... eS thrust. 100-0 Alternatively: a) 10 4Jb3 'iia4 11 cxdS cxdS 12 0-0 i.xc3 13 bxc3 b6 (Galvin-O'Hanlon, Dublin 1935) 14 i.xf6 4Jxf6 IS .:tfc1 i.a6 =. b) 10 f4!? c5 11 0-0 cxd4 (1l...h6, Martineau-Majeed, Dubai OL 1986, 12 i.xf6! 4Jxf6 13 4Jb3'iid8 14 4Jxc5 ±) 12 exd4 and Black has problems with his queenside development. 10•••dxc4 No better are: a) 1O ...e5 11 4Jb3 'iic7 12 cxd5 cxd5 13 l:.ac1 i.xc3 14 i.xf6 4Jxf6 15 'iVxc3 'iixc3 16 '::'xc3 exd4 17 4Jxd4 is much better for White, Lezcano-Pavia, 1989.

7 tDd2 i.b4: MAIN LINE (8 'iic2 0-0) b) 10... h6 11 i.h4 e5 12 dxe5 (Emodi-Kincs, Balaton 1996) 12 ... i.xc3 13 bxc3 ttJe4 14 ttJxe4 dxe4 15 'iixe4 ttJxe5 16 i.g3 'iixc3 17 ltfdl ;!; / ±. c) 1O... i..d6 11 c5 i.f8 12 f4 b5 (Meissner-Diimer, Germany 1991/2) 13 a3 'iic7 14 ttJf3 ttJg4 15 ttJdl ;!;. d) 1O ... 'iic7 11 ttJf3 (11 cxd5 cxd5 12 :ac1 i..d6 13 ttJb5 i..xh2+ 14 Whl 'iixc2 15 .lhc2;!; Banikas-Matsuzawa, Zagan jr Wch 1997) 11...i.xc3 12 bxc3 ttJe4 13 i..f4 'iid8 14 :abl ttJdf6 15 ttJe5;!; Bartels-Markwardt, Bonnjr 1995. 11 i..xf6 ttJxf6 12 ttJxc4 'ilc7 13 a3 13 ttJe4 ttJxe4 14 'ii'xe4 i.e7 15 1:i.ac1 ;!; Astrom-LJensen, Stockholm 1990. 13•••i..d6 13 ... i.e7 14 .l:tac1 i.d7 15 b4 is slightly better for White, Stone-Kirton, Winnipeg 1994. 14 ttJxd6 'ii'xd6 15 ttJe4 White has a small advantage, Trojacek-Precechtel, Pardubice 1994. E4) 9.•.e5 (D)

w

Black executes his thematic break, but there is a problem:

153

E41: 10 i..xf6 153 E42: 100-0 155 E43: 10 dxe5! 160 The last of these three moves gives Black problems. Or: a) 10 c5 exd4 11 exd4.l:te8 120-0 i..xc3 13 ttJb3 'ii'a4!? (13 ... 'ii'c7 14 bxc3 ttJe4 = Mikhalchishin-Vainerman, Simferopol1983) 14 bxc3 b6 =1=. b) 10 ttJb3 'ii'c7 (1O ... 'iia4, GrivasBotsari, Greek Ch 1990, 11 i.xf6! ttJxf6 12 dxe5 ttJe4 13 cxd5 cxd5 14 0-0 i..xc3 15 bxc3 ±; 10... i..xc3+!? 11 bxc3 'iic7 12 i..h4 b6 13 dxe5 'iixe5 14 cxd5 cxd5 15 ltd1 i..b7 16 ttJd4 .l:.fc8 17 i..g3 'iie7 is equal) 11 a3 dxc4 12 i..xc4 i..d6 13 i..d3 .l:.e8 14 i.h4 exd4!? (or 14 ... h6 = H.Schlosser-SchOllmann, Bavaria 1993/4) 15 ttJxd4 i.e5 =. E41) 10 i..xf6 This cautious move gives White no advantage. 10••. ttJxf6 11 dxe5 Other moves: a) 11 0-0 exd4 12 exd4 (12 ttJb3 'iic7 13 ttJxd4 dxc4 14 i..xc4 ttJg4 15 ttJf3 ttJe5 16 i..e2 ttJxf3+ 17 i.xf3 'iie5 18 .l:.fd1 i.e6 =1= Wirthensohn-Preissmann, Buenos Aires OL 1978) 12...dxc4 13 ttJxc4 'iic7 (13 ... 'ii'g5, Pircher-Bromen, Estensi 2001, 14 f4 'iif5 15 'iib3 i..xc3 16 bxc3 ttJd5 =) 14 ttJe3 (14 ttJe5 i..e6 15 a3, Weissgerber-Rellstab, Bad Aachen 1935, 15 ... i.d6 =1=) 14... i.e6 15 i.f3 :fd8 16 ltfd1 ltac8 =1= TrojacekKalivoda, Czech Ch 1993. b) 11 ttJb3 'iic7 12 a3 dxc4 (alternatively, 12... i.d6 13 cxd5, Krum-Pramann, Germany 1993, 13 ...cxd5 14.1:.c1

154

THE CAMBRIDGE SPRINGS

i.d7 ISlLle4 'ii'xc2 16lLlxf6+ gxf6 17 l:.xc2 l:.ac8 with good play for Black) 13 i.xc4 i.d6 14 h3l:.e8 (14 ... exd4 IS lLlxd4 'iiaS 16l:.dl i.c7 =Book-Keres, Tallinn 1935) IS 0-0 i.e6 16 i.xe6 l:.xe617l:.ac1l:.e7 18l:.fdll:.d8 19 dS = Banoczi-Timar, Hungary tt 1998. 1l ...lLle4 (D)

2000, IS ... i.e6 16l:.d4 fS 17 'iVd2 cS +) 14...'iVxc3 IS bxc3l:.e8 16 l:.fdl (16

l:.ad 1 ~f8 17 a4lheS 18l:.d8+ l:.e8 19 l:.d6 cS 20 as ~e7 21 l:.dS b6 Petersen-Stadler, COIT. 1997) 16 ... ~f8! and then: bl) 17 l:.abll:.xeS 18 l:.b2 ~e7 19 l:.d4 fS 20 ~f1 b6 + Grtinfeld-Keres, Tallinn 1935. b2) 17 g4 l:.xeS 18 l:.d8+ ~e7 (or 18 ... l:.e8 19 l:.adl cS 20 h4 i.e6 Bohle-SchOllmann, Dortmund 1993) 19 l:.g8 i.xg4 20 l:.xa8 i.xe2 KlauserCosta, Swiss Cht 1995. b3) 17 l:.d4 l:.xeS 18 l:.ad 1 i.fS 19 l:.ld2 l:.ae8 (19 ... ~e7!? 20 h3 i.e6 21 ~f1 fS +) 20 h3 i.c8 + Versteeg-De Jong, 1982. c) 13 a3 i.xc3+ 14 'iVxc3 'ii'xc3+ IS bxc3 l:.e8 16 0-0-0 ~f8 17 g4 (17 l:.d4 l:.xeS 18 l:.d8+ l:.e8 19 l:.hdl ~e7 20 l:.xe8+ ~xe8 21 l:.d4 i.fS = MartinezChemes, Buenos Aires 19S1) 17 ... l:.xeS 18 l:.d8+ l:.e8 19 l:.hdl fS = DouvenVedder, Hilversum 1991. 13•..i.xc3 14 'iVxc3 Rego-Olsson, e-mail 1999. Black can now play 14... 'iVxa2! IS ~c2 'iVa6 16l:.al 'ii'b6 17 'iWd4 'iVxd4 18 exd4 f6 19 f3 fxeS 20 dxeSl:.fS 21 fxe4 with an equal ending both after 2l...l:.f2 and 2l...l:.xeS.

+

+

w

+

Now: E411: 12lLldxe4 IS4 E412: 12 cxd5 IS4 Worse are: a) 12 0-0 lLlxd2!? 13 'iVxd2 dxc4 14 i.xc4 'iWxeS with good play for Black, Rosemann-Kreul, Germany 1989. b) 12l:.c1lLlxd2 13 'iixd2 dxc4 14 i.xc4 'iVxeS IS 0-0 (Bemdorff-Franke, Germany 1991) IS ... i.d616f4 'iVe717 i.d3 l:.d8

+.

E41l) 12lLldxe4 dxe4 13 O-O-O!? Other moves: a) 13l:.cl 'iVxeS 140-0 (112-112 Stavrum-Sandum, Steinkjer 1985) 14 ... i.fS IS 'iWb3 i.d6 16 g3 l:.ab8 17 :fd 1 l:.fd8 +. b) 13 0-0 i.xc3 14 'iWxc3 (14 bxc3 'iWxeS ISl:.fdl, Loncar-Candura, Ischia

E412) 12 cxd5 lLlxc3 12 ... cxdS is worse: a) 13 .l:.c1 i.fS (13 ... i.e6 14 0-0 lLlxd2 IS 'ii'xd2 'ii'xa2 16 f4l:.ac8 17 fS ;t Waiter-Schiltz, COIT. 1984) 14 i.d3 (Hein-Bergelt, COIT. 1983) 14 ... lLlxc3 IS bxc3 i.xd3 16 'ii'xd3 l:.ac8 17lLlbi 'iWxa2 18 l:.dl i.aS 19 'ii'xdS 'iVxdS 20 l:.xdS i.xc3+ 21 ~e2 a6 =.

7 ti:Jd2 i..b4: MAIN LINE (8 'iic2 0-0) b) 13 0-0 ..txc3 14 tiJxe4 ..txe5 15 tiJg5 g6 (Bolbochan-Pilnik, Mar del Plata 1948) 16 :lfdl J..f6 17 'lib3 %:td8 18 tiJf3 :ld6 19 tiJd4 :lb6 20 'ii'c2 'ili'b4 21 :labl ;!;. 13 bxe3 ..txe314 ltct 14 %:tdl cxd5 15 0-0 J..xe5 16 tiJb3 'ii'd8 17 f4 J..f6 ='F Duhr-Bartsch, Bundesliga 1982/3. 14.•. J..b4! Not as good is 14... ..txe5 15 dxc6 (15 f4 J..d6! 16 dxc6 ..tb4! 17 a3 {17 c7 %:te8 18 e4 :le6 19 %:tdl %:tc6 20 'ili'b2 :lxc7 +} 17 ... ..txa3 18 :lal 'ii'c5 19 'ii'xc5 J..xc5 20 J..f3 bxc6 21 ..txc6 :lb8 ='F) and now: a) 15 ... bxc6 160-0 ..te6 (16 ... J..f5, Barrance-Whitlock, New Zealand Ch 1994, 17 tiJb3 ..txh2+ 18 ~hl 'ii'e5 19 'ii'c5 J..c8 20 ..tf3 ;!;) 17 ..tc4 %:tfe8 18 tiJb3 'lib6 19 ..txe6 :lxe6 20 tiJc5 ;!; Zak-Temanlis, Tel-Aviv 1991. b) 15 ...:ld8 16 ..td3 bxc617 0-0 (17 'ii'xc6 J..g4! -+; 17 J..xh7+ ~h8 18 ..td3 l:tb8! +) 17 ... ..ta6 18 tiJc4 J..xc4 19 ..txc4 (19 'ii'xc4 ltac8, Pavlov-Kirchanov, Novosibirsk 2001,20 %:tfdl g6 21 J..e2 c5 22 a4 %:txd1+ 23 %:txdl 'ii'c7 24 g3 'ii'e7 25 ..tf3 is slightly better for White) 19 ... 'ii'c7 (19 ... %:td6 20 %:tfdl :lad8, Dannehr-Vinklarek, COIT. 1989, 21 l'hd6 ..txd6 22 g3 ;!;; 19 ... %:tac8, Pastor-Kalivoda, Czech Ch 1993, 20 :lfdl!? ;!;) 20 g3 c5 21 %:tfdl ;!; BukicNikolac, Yugoslavia 1976. 15..td3 15 :lbl cxd5 (15 ...%:td8 16 d6 J..xd2+ 17 'ii'xd2 'ii'xe5 18 %:tdl J..e6 19 f4 'ili'd5 ='F) 16 %:tb3 d4 17 a3 dxe3 18 :lxe3 J..xa3 190-0 J..b4 ='F. 15•••'ii'xd5 16 0-0 16 ..txh7+ ~h8 17 ..te4 ..txd2+ 18 We2 ..tg4+ 19 f3 'ii'xe5 20 'itxd2l:tfe8 ='F.

155

16.....txd2 17 :ledl 'ii'xe5 18 ltxd2 'ii'h5 19 :lbl %:te8 White does not have full compensation for the pawn. E42) 100-0 (D)

B

Ignoring the ... e5 advance is often a good option, since the opening of the centre could easily tum out to be pleasant for White unless Black can justify the unusual positioning of his queen and dark-squared bishop. Now: E421: 10.....td6 156 E422: 10...exd4 156 Or 1O... J..xc3 11 bxc3 (11 'ili'xc3 'ili'xc3 12 bxc3 dxc4 13 J..xc4 tiJd5 14 %:tfel ;!; Van Zanten-Mertens, Sittard 1990), and here: a) 1l...%:te8 12 ..th4 (12 dxe5 %:txe5 13 J..f4 %:te8 14 tiJb3 'ii'a4 15 cxd5 tiJxd5 16 ..tg3 ;!; Mundsztuk-Crockett, Nottingham 1946) 12 ... exd4 13 cxd4 tiJe4 (13 ... b6!? 14 cxd5 cxd5 15 a4 ;!; / ±) 14 tiJxe4 dxe4 15 %:tfdl tiJb6 16 %:tabl ± Pavey-Page, Aberdeen 1939. b) ll...exd4 12 cxd4 dxc4 13 ..tf4 tiJb6 14 ..te5 tiJg4 15 J..d6 ;!; WellsSchoellmann, Bled 1995.

156

THE CAMBRIDGE SPRINGS

E421) 10.••.td611 cxd5 Instead: a) I1lLlb3 'fic7 12 cxd5 (12 c5 .te7 13 dxe5 lLlxe5 = Blatny-Kuczynski, Sharjah jr Wch 1985) 12 ... cxd5 (or 12... exd4 13 lLlxd4 lLlxd5 14 lLlxd5 iLxh2+ {14... cxd5 15 'ikxc7 .txc7 16 lIac1.te5 17 lIfdllLlb6 18 .te7 lIe8 19 iLcs ± Nitsche-Flechsig, COIT. 1979} IS ~hl cxdS 16 g3 .txg3 17 fxg3 'fixg3 18 .tf4 ± Grala-Panczyk, Siedlce 1974) and then: al) 13 h3lLle4 14 .th4lLlxc3 (Bundgaard-Ertbjerg, COIT. 1975) IS 'ikxc3 'ikxc3 16 bxc3 e4 17 c4 dxc4 18 .txc4 lLlb6 =. a2) 13 .txf6 lLlxf6 14 g3 a6 IS lIac1 .th3 =Blachmann-Kreideweiss, COIT.1981. a3) 13 dxeS .txeS 14 .txf6 .txh2+ IS 'iithllLlxf6 (Kopczak-Kollowa, COIT. 1974) 16 g3 .txg3 17 fxg3 'ikxg3 with compensation. a4) 13 f4 exf4 14 .txf4 .txf4 IS lIxf4 (15 exf4 a6 16.tf3 bS 17 lIac1 'ikd6 18 fS lIe8 =) IS ... lIe8 16 'ikd2 lLlb6 17 lIel 'ikd8 18 .tbS .td7 19 .txd7 'ikxd7 20 lLlcS 'ikc6 21 'ikf2 lIad8 22 e4 dxe4 23 lLlSxe4 lLlbd7 =. b) 11.th4 exd4 12 exd4 'ikc7 (Karcher-Pepke, Baden 1995) 13lLlf3 dxc4 14 .txc4 t. c) 11 cS iLe712 b4 'fid8 (12 ...'ikxb4? 13lLlb3 'ika3 14lLlbl 'ika4 IS ikb2 ±; 12 ...'ikc7 13 .th4 'ikd8 14 bS exd4 IS exd4 t Skoglund-Iversen, COIT. 1980) 13 bS (13 f4 exd414 exd4 lIe8 IS lIael lLlf8 16 fS t Kovacs-Timar, Hungary 1992) 13...J:!.e8 (13 ...lLle8 14 .txe7 'ikxe7 ISlLlb3 fS 16lLlaS t Zeltwanger-Schubert, COIT. 1988-9) 14 a4 h6 IS .th4 t Hein-Flechsig, COIT. 1987.

11...lLlxd5 Worse are: a) ll...exd4 12lLlc4 'ikc7 13 lLlxd6 dxc3 14 dxc6 'ii'xc6 IS lIadl lLldS 16 iLf3 cxb2 17 'ikxb2 'ikxd6 18 lIxdS ± Rivas-Nikolac, Rome 1984. b) ll...cxd5 12 lLlbS .tb8 13 dxeS .txe5 14 lLlf3 lLle4 (14 ... a6 IS lLlxeS lLlxeS 16 .txf6 wins for White) 15 .th4 (IS .te7!) 15 ....tf6 (1S ....tb8 ±) 16 lLlc7 lIb8 17 b4! and White wins, Spraggett-I.Thomas, Toronto 1987. 12lLlc4 12 lLlxdS!? cxdS 13 lIac1 lIe8 14 dxeSlLlxeS IslLlb3 ikb6 16 .tf4 t. 12...'ikc7 13lLlxd6 'ikxd6 14lLlxd5 'ikxd5 14 ... cxdS IS dxeS lLlxeS (Tuominen-Vainio, Salo 1999) 16 .tf4 ±. 15 dxe5 lLlxe5 White has an advantage.

E422) 10...exd411lLlb3 (D)

B

We see this move repeatedly in such positions. Black must decide where to put his queen before he knows how White is to recapture on d4: E4221: 1l ..:ti'c7 IS7 E4222: 1l ...'ikb6 159

7 lDd2 i..b4: MAIN LINE (8 ii'c2 0-0) The choice between these two main options is by no means straightforward. Both have their pros and cons, and the queen will generally move again in the next few moves. Or 1l...'iYd8 12lDxd4 h6 (12 ... ~xc3 13 bxc3 dxc4 14 ~xc4lDeS IS .i.e2 h6 16 SLh4 lDg6 17 SLg3 'iie7 18 h3 lDe4 19 .i.h2 cS 20 SLd3 cxd4 21 .i.xe4 dxe3 1/2- 1/2 A.Petrosian-Cardon, EeIdo 1991) 13 SLh4 SLxc3 14 bxc3 dxc4 (NiemelaRellstab, Dubrovnik OL 19S0) IS .i.xc4 lDeS 16 .i.e2lDg6 17 .i.g3 'iYe7 18 .i.d3 with a slight advantage for White.

E4221) 1l •..'iYc7 12lDxd4 Here this is White's preferred recapture, since the black queen is quite well placed for the structure that would arise if White took back with the pawn. Other moves: a) 12 .i.f4 .id6 13 .i.xd6 'iYxd6 14 lDxd4 dxc4 (14 ... lDb6 IS cxdslDbxdS 16 l:tfdl lDxc3 17 'iixc3 ;I; GrunfeldWinter, Scarborough 1930) IS .i.xc4 lDg4 16 lDf3 lDdeS 17 lDxeS 'iixeS 18 g3 'iYhS 19 h4 lDeS 20 ~e2 ~g4 Arencibia. b) 12 exd4 dxc4 13 ~xc4 SLd6 (or 13 ... lDg4 14 g3 h6 IS SLd2 lDb6 16 ~e2 'iYd8 = Sturua-Acs, Ohrid Ech 2001) 14 h3 (Suhl-Beckemeier, 2nd Bundesliga 1997/8) 14 ... h6!? IS SLxf6 lDxf6 16 life 1 .i.d7 17 lDcs lIae8 18 nadl .ic8 =. 12•.•dxc4 Or: a) 12 ... ne8 13 cxdS .i.xc3 14 bxc3 lDxdS IS c4 lDSf6 16 ~d3 (OpsahlLarsen, corr. 1927) 16.. :iVaS 17 .ifS h6 18 SLh4 ;1;.

+

157

b) 12... ~xc3 13 bxc3 (not 13 SLf4? 'iixf4! 14 exf4 ~xd4 +) 13 ... dxc4 14 .i.f4 'iiaS IS .i.xc4 l:te8!? (worse is Is ... lDb6 16 lDb3 {16 SLc7, TurkkaVahtera, corr. 1977, 16 .. :iWcs 17 SLxb6 'iixc4 18 'iWb3 'iYdS 19 c4 'iYd6 is equal} 16... 'iWhS 17 .i.e2 .i.g4 18 f3 SLe6 19 c4;1; Fuhrrnann-Pramann, Germany 1995/6) 16 lDb3 'iWa4 17 .i.e2 'iWe4 18 .i.d3 'iie7 19 lIabllDeS =. 13 SLxc4 (D) Or 13 ~f4lDeS (13 ... 'iid8, Martinez Martin-Borgo, Toscolano 1997, 14.:tfdl 'iie7 IS .i.xc4lDb6 16 SLd3 .:td8 17 a3 ;1;) 14 lHdl (14 .i.xc4, ConstantinouBures, corr. 1996, 14 ... lDhS!? IS .i.d3 lDxf4 16 .i.xh7+ ~h8 17 exf4lDg4 =) 14 ...'iie7 IS lDe4 lDxe4 (1S ... lDd3 16 lDxf6+ 'iWxf6 17 'iWxc4 {17 .i.xd3 cxd3 18 'iWxd3 l:te8 =} 17 ... lDxf4 18 'iixb4 as =) 16 'iixe4lDg6 17 'iWxe7 i..xe7 18 i..g3 SLf6 19 .i.xc4 cS 20 lDbS (20 lDb3 .i.xb2 21 .:tabl .i.a3 22 .id6 .i.fS 23 .i.xf8 ~xf8! 24 .i.d3 .i.xd3 2S .:txd3 c4 =) 20... .i.xb2 21 .:tabl SLeS 22 SLdS (Romanovsky-Bogoljubow, Leningrad 1924) 22 ... SLxg3 23 hxg3 lDe7 with equality.

B

13..:iVa5!? Other continuations:

158

THE CAMBRIDGE SPRINGS

a) 13 ...lt:JeS 14 i.e2 ll:\eg4 IS i.f4 ~e7 16 h3ll:\eS 17 lIad1ll:\g6 18 i.g3

lId8 was played in Spraggett-S.Saeed, Taxco IZ 1985, and now 19 a3 i.d6 20 i.xd6 lIxd6 21 b4 ± Smagin. b) 13 ...ll:\g4 14 i.f4 (Olsen-Sylvan, Tjalfe 1995) 14... ll:\deS IS lIadl "ilie7 16 i.e2 ll:\g6 17 i.g3 ll:\f6 18 ll:\b3 !. c) 13 ... 'ifeS 14ll:\f3 'ife7 IS a3 i.d6 (lS ... i.aS 16 lIadl i.c7 17 i.a2 lIe8 18 i.h4 ! h6 19 lId4 "ilics 20 lIfdl 'ifhS 21 g4 ll:\xg4 22 lIxd7 i.xd7 23 lIxd7 +- Beliavsky-Smagin, USSR Ch 1986) 16 lIadl lIe8 17 i.h4 h618 .:td2 i.c7 19 .:tfd1 !. d) 13 ... i.d6 and then: d1) 14 'ith1 i.eS IS .:tad1 ll:\b6 16 i.e2 ll:\g4 17 h3 (17 ll:\f3 i.xh2 18 g3 i.xg3 19 fxg3 'ifxg3 should be a draw) 17 ... i.xd4 18 i.xg4!? (18 hxg4 i.eS 19 f4 i.xc3 20 "ilixc3 f6 21 i.h4 i.e6 22 a3 i.dS =1= Cramling-Smagin, Copenhagen 1991) 18 ... i.xc3 19 i.xc8 'ifxc8 intending ...~e6 =. d2) 14 f4 lIe8 IS 1:[f3 ll:\g4 16ll:\e4 (Weber-Scheil, COIT. 1990) 16... ll:\b6 17 i.b3 ll:\dS 18 i.xdS cxdS 19 ll:\xd6 'ifxd6 =. d3) 14 h3 h6 IS i.h4ll:\b6 16 i.b3 ll:\fdS 17 ll:\xdS!? (17 ll:\fS i.xfS 18 'ifxfSll:\xc3 19 bxc3 is equal, BandzaSchwarz, Wiesbaden 1991) 17 ... ll:\xdS 18 lIadl !. e) 13 ... i.xc3 14 bxc3 (D) (14 i.xf6 ll:\xf6 IS 'ifxc3 a6 16 a4 cS 17 ll:\e2, Liimatta-Wikman, COIT. 1991, 17 ...b6 18 b4 i.b7 19 bxcS 'ifc6 20 f3 "ilixcs =) and now: e1) 14... ll:\eS IS i..e2 (IS i.b3, lMatlak-Swierczynski, COIT. 1990, lS ...cS!? 16 ll:\bS intending c4 and ll:\c3-dS !) lS ... 'ife7 (1S ... ll:\dS 16 c4ll:\e7 17 i.f4 ll:\7g6 18 i.g3 ! Siimisch-Rautenberg,

B

Germany 1947) 16 .:tad1 (16 e4 h6 {16... ll:\g6!?} 17 i.xf6 "ilixf6 18 f4, Kantele-Sabel, COIT. 1981, 18 ... ll:\g4 19 eS "ilih4 20 i.xg4 "ilixg4 21 fS !) 16... h6 17 i.xf6 (17 i.h4 ll:\g6 18 i.xf6 'ifxf6 19 lId2ll:\h4 20 .:tfd1 "iligS 21 g3 ! Kwlatkowski-Majerski, COIT. 1998) 17 ...'ifxf6 18 h3 (intending 'ith2, f4 and e4 ! ECD) Veingold-Kupreichik, Sverdlovsk 1984. e2) 14.. :~eS and now: e21) IS i.h4 ?! "ilie4! 16 "ilixe4ll:\xe4 17 lIfc1 (Ruban-Cvetkovic, Yugoslavia 1993) 17 ... ll:\eS ! 18 i.e2 ll:\g6 19 i.g3 i.d7 20 lIabl b6 =Ruban. e22) lSll:\f3 "ilics (1S ... ~e7 16 :reI h6 17 i.h4 ~cS 18 i.f1 ! Postny-Acs, Tel-Aviv 2001) 16 i.d3 (16 'ifd3 lIe8 17 "ilid4ll:\e4 18 i.f4ll:\b6 =1= ArencibiaAcs, Varadero 2000; 16 i.b3 lIe8 17 e4 ll:\xe4 18 lIae 1ll:\df6! 19 i.xf6ll:\xf6 20 lIxe8+ ll:\xe8 21 lIe1, Bojkovic-Cvetkovic, Ulcinj 1997, 2l...i.fS!? 22 "ilid2 i.g6! =1=) 16...h6 17 i.h4 (the two bishops are powerful) 17 ...ll:\g4 (BanikasCvetkovic, Khania 1999; 17 ...ll:\dS 18 lIac1 ;l;; Siegel-Gerstner, 2nd Bundesliga 1996n) 18ll:\d4! !. e23) IS i.f4 ~cS (lS ... 'ifhS 16 e4 .:te8 17 lIae1ll:\cS 18 f3! WhiteheadWenaas, North Bay 1998) and then:

7 liJd2 .i.b4: MAIN LINE (8 'iic2 0-0) e231) 16 .td3 tiJeS 17 tiJb3 (17 .te2 tiJg6 18 .tg3 lIe8 19 .tf3 112-112 Law-Schoenfeld, Berlin 1998; 17 .txeS 'ilVxeS 18 e4, Yu Mingyuan-Khamatgaleev, Budapest 1999, 18 ... lId8! 19 :abl 'ilVhS 20 :fel tiJg4 21 tiJf3 tiJeS =) 17 ... 'ii'dS 18 .te2 .tfS (Tesic-Cvetkovic, Vrbas 1993) 19'ii'b2;1;. e232) 16 .tb3 tiJdS 17 .txdS'iWxdS (17 ... cxdS 18 lIfbl a6 19 tiJfS ;1;) 18 tiJfS 'ilVe6 19 e4 ;1;. e3) 14...'ii'aS!? IS tiJfS (IS tiJf3 :e8 16 .td3 h6 17 .txf6 tiJxf6 18 lIabl fic7 19 h3 .te6 =; IS.tM :e8 16 tiJfS 'tWcS 17 .td3 tiJdS 18 tiJd4 h6 19 lIac1 tiJeS =) IS ... 'ii'eS 16 .tf4 'iWcs 17 .td3 tiJeS 18 .txeS "it'xeS =. 14 tiJf3 tiJe5 Or: a) 14... h6 IS .th4 :e8 (1S ... tiJeS 16 .txf6 tiJxc4 17 a3, KofteciogluSzabo, corr. 1998, 17 ... "it'fS 18 'iWxfS .txfS 19 axb4 ;1;) 16 tiJe2 .te7 17 a3 tiJeS 18 tiJxeS'ii'xeS 19 .tg3 ;1;. b) 14....txc3!? IS bxc3 :e8 16 .td3 (16 lIfcl !?) 16 ... h6 17 .th4 gS 18 .tg3 tiJcs 19 .teS tiJxd3 20 .txf6 "it'fS 21 tiJd4 'iWxf6 22 'ii'xd3 cS =. 15 tiJxe5 IS .txf6 tiJxf3+ 16 gxf3 gxf6 17 ~hl 'it>h8 18 :gl .txc3 19 "it'xc3 'ii'xc3 20 bxc3 .te6 also leads to equality. 15...'ilVxe5 16 .tf4 'ii'e7 17 .td3 h6 18 h3 .te6 The position is equal, SamischKashdan, Frankfurt 1930. E4222) 1l...'ii'b6 (D) 12exd4 Here this is slightly the more critical reply, since Black doesn't have the

159

convenient regrouping with an immediate ....td6. Other moves: a) 12 tiJa4'ii'c7 13 tiJxd4 dxc4 (Matosec-Griinstliudl, Graz 1995) 14 .tf4 .td6 (14 ... tiJeS =) IS .txd6 "it'xd6 is equal. b) 12 tiJxd4 and then: bl) 12... dxc4?! 13 .tM (13 .txf6 tiJxf6 14 .txc4 "it'cs IS tiJce2 'iWeS is equal, Aleksieva-Botsari, Hradec Kralove girls Ech 1992) 13 ... "it'cS 14 tiJa4 'iWaS (14 ... 'iWeS IS 'ii'xc4 .te7 16 .tg3 'ii'aS 17'ii'c2;1; Barsov-Shabanov, Tashkent 1987) IS .txc4 (Van der SterrenYusupov, Munich 1994) IS ... 'ii'hS 16 .tg3 tiJb6 17 .te2 .tg4 18 f3 .td7 leads to a slight advantage for White Van der Sterren. b2) 12 ... .txc3 13 bxc3 dxc4 14 .txf6 tiJxf6 IS .txc4 cS (IS ... 'ii'cs 16 .te2 lIe8 = Tunik-Smagin, Russian Ch 1998) 16 tiJfS .te6 17 :abl 'iWc7 18 .txe6 fxe6 19 tiJg3 lin = FrydmanKeres, Helsinki 1935. 12...dxc4 Or 12 ...'ii'c7 13 cxdS cxdS 14 :ac1 .txc3 IS 'ii'xc3 'ii'xc3 16 bxc3 h6 17 .tf4 ;!; Keene-Yusupov, telechess OL 1981. 13 .txc4'ii'c7 Alternatively:

160

THE CAMBRIDGE SPRINGS

a) 13 ... ~d6 14 liJe4liJxe4 15 'iVxe4 'iVc7 16 ~d3 (16 'iVh4liJb6 = LuddenVan der Wey, Hilversum 1993) 16... f5 17 'iVh4;t. b) 13 ... a5 and here: bl) 14 .l:Iadl a4 15 liJc1 'iVa5 16 ~d2liJb6 17 ~d3 ~e6 18 .l:Ifel a3 = Postny-Acs, Athens 2001. b2) 14 a4 'iVc7 15 liJd2 was played in Kishnev-Smagin, 2nd Bundesliga 1998/9, and now 15 ...'iVd6 16liJf3liJb6 17 ~b3 liJfd5 is equal. b3) 14 a3 ~d6 15 .l:Iadl a4 16liJd2 'iVxd4 (Pichler-Beckemeier, Germany 1996) 17 ~d3!? 'ifg4 18 liJde4liJxe4 19liJxe4 ~c7 =. b4) 14liJe4!? (Flumbort-Lazar, Balatonlelle 2001) 14 ... a4!? 15 liJxf6+ liJxf6 16liJc5 liJd5 17 i.e3 a3 18 .l:Iab 1 'iVa7 19 ~xd5 cxd5 20 'iVb3 ~xc5 21 dxc5 ;t (opposite-coloured bishops). 14liJd2 ~d6!? 14 ... liJg4 15 liJf3 h6 (15 ... ~d6 14... i.d6!? lSliJj3liJg4) 16 ~h4 ~d6 17 h3liJh2 18liJxh2 i.xh2+ 19 ~hl ~f4 is unclear according to Smagin but after 20 .l:Iael White has a small advantage. 15liJf3 15 h3 ~h2+ 16 ~hl ~f4 17 ~xf4 'iVxf4 18liJe2 'iVd6 19 .l:Ifel liJb6 with good play for Black. IS•••liJg4 16 h3!? 16 g3 (Komarov-Smagin, Amantea 1994) 16... h6! 17 ~d2 liJb6 18 ~b3 'iVd8 19 .l:Iac1 a5 =. 16.••liJh217liJxh2 ~xh2+ 18 ~hl liJb6 18 ... ~f4?! 19 ~e7 .l:Ie8 20 .l:Iael liJe5 (20 ... liJf8?? 21 ~d6 +-) 21 ~h4 ~f5 22 'iVe2 b5 (22 ... g5 23 dxe5 .l:Ixe5 24 'iVf3 l:txel 25 .l:Ixel gxh4 26 lLle2 'ifa5 27 .l:Idl ± / +-) 23 dxe5 .l:Ixe5 24

'iVf3 .l:Ixel 25 i.xf7+ 'iVxf7 26 l::txel ~d7 27 liJxb5 ±. 19~b3 19 ~d3 h6 20 i.e3 (20 ~h4 ~f4 21 .l:Ifel ~e6 22 i.f5 l:tae8 23 ~xe6 fxe6

24 .l:Ie4 'iVf7 with good play for Black) 20 ... ~f4 21lbel ~e6 =. 19...~f4 20 ~xf4 20 ~h4 ~e6! 21 ~xe6 fxe6 22 .l:Iael 'iff7 23 liJe4 liJd5 gives Black good play. 20..JWxf4 21 'iVe4 'iVf6 22 .l:Iael ~e6 23 ~xe6 .l:Iae8 24 dS 24 ~xf7+ 'iixf7 25 'ifh4 (25 'iibl .l:Ixel 26 'iixel l:td8 =) 25 ... .l:Ixel 26 .l:Ixel 'iVxf2 27 'iVxf2 .l:Ixf2 28 .l:Ie8+ .l:If8=. 24...cxd5 25 liJxdS lLlxd5 26 'iVxdS .l:Ixe6 27 .l:Ixe6 'iVxe6 28 'ifxe6 fxe6 The ending is drawn. E43) 10 dxeS! liJe4 (D)

Now: E431: 11 lLldxe4 E432: l1lLlcxe4! E431) 11 liJdxe4 dxe4 12 0-0 Other moves:

160 161

7 ti:Jd2 i.b4: MAIN LINE (8 'iic2 0-0) a) 12 l:tc1? ltJxe5 13li'xe4 (better is 13 a3 ltJd3+ +) 13 ... ltJg6 + DuppelGerstner, Bodensee 1999. b) 12 e6 i.xc3+ (12 ... ltJe5 13 exf7+ l:txf7 14 i.f4 i.e6 {14 ... ltJd3+!? 15 i.xd3 exd3 16li'xd3 i.f5 17li'd2 l:td8 18 'iVc1 i.d3 with compensation} 15 0-0 i.xc3 16 bxc3 .ixc4 17 i.xc4 ltJxc4 =) 13 'iVxc3li'xg5 14 exd7 i.xd7 15 0-0-0 l:tfd8 16 f4 li'h4 17 ':'d4 i.g4

=

c) 12 0-0-0 ltJxe5 13 i.f4 (RecaVan den Bosch, The Hague OL 1928) 13 ... .ixc3 14 li'xc3 li'xc3+ 15 bxc3 i.g4 =. 12•••.ixc3 13 bxc3 13 'iVxc3 'iVxc3 14 bxc3 ltJxe5 15 i.e7 l:te8 16 i.d6 i.g4 17 i.xg4ltJxg4 with good play for Black, NehmertB.Schmidt, Menden 1974. 13...l:te8 Good are also: a) 13 ... ltJxe5 14 'iVxe4 (14 i.e7 l:te8 15 i.M 'iVc7 16 'iVxe4 c5 17 i.a3 i.d7 with compensation, Andersen-Scammon, COIT. 1997; 14 .iM, EinzingerRohr, Bavaria 1999, 14... i.f5 15 :fb1 b6 16 i.e7 l:tfe8 17 i.M 'iVa6 +) and here: a1) 14 ... f6 15 i.h4 (15 i.f4? i.f5! 16 'iVd4 :ad8 -+ Griinfeld-Bogoljubow, Ostrava 1923) 15 ... li'xc3 (Lambrechts-Oliveira, COIT. 1988) 16 i.g3 ;t. a2) 14...'iVxc3 15 ':'ac1 'iVaS (RoeUiRozic, Balatonlelle 2001) 16 a4 ltJg6 17 c5 i.e6 18 f4 i.d5 19 'iVc2 f6 20 f5 ltJe5 21 i.f4 ':'fe8 22 e4 i.f7 23 :fd1 :ad8 24 l:.d6 ;t. a3) 14 ... ltJg6 15 i.f4 i.f5! 16 'iVf3 l:.ad8 17 i.c7 'iVxc7 18 li'xf5 l:td2 =.

161

b) 13 ...li'xe5 14 i.f4li'f5 (14 .. :iie7 15 l:.fd 1 ':'e8 16 i.d6 'iVe6 17 h3 ltJf6 = Stelter-Reetz, 1995) 15 l:.fdl l:te8 16 ':'d6 ltJf8 (16 ... ltJe5 17 :ad1 i.e6 18 :ld4 gives White a slight advantage, Hesse-Neukirch, Rostock 1981) 17 l:td4 'iVg6 18 ':'ad1 i.f5 =. 14 l:.fdlltJxe5 14...'iVxe5 15 i.f4 'iVaS is unclear according to ECO but in our view White has a slight advantage, W.SchmidtDorfman, Warsaw 1983. 15 'iVxe4 i.e6 16 i.h4 'iVxc3 17 l:.acl 'iVa5 18 li'bl b6 The position is equal, Vaganian-Yusupov, Erevan Z 1982. E432) 11 ltJcxe4! dxe4 12 :dl ltJxe5 13 0-0 Bad are: a) 13 i.f4? (Ferkingstad-Malarkey, Moscow OL 1994) 13 ... ltJd3+! +. b) 13 a3? ltJd3+ 14 .ixd3 exd3 15 axM dxc2 16 bxaS cxd 1li'+ 17 'Otxd 1 l:te8 +R.Bjerke-Folling, Gausdal1981. 13....ixd214 'iVxd2 'iVxd215 l:txd2 i.e616 b3 f6 16 ...b6 17 :fdl (17 i.f4 ltJg6 18 i.d6 l:tfd8 19 f3 exf3 20 i.xf3;t Otterson-Stadler, e-mail 1999) 17 ... ltJg6 18

M±. 17 i.f4 l:.ad8 18 ':'fdl Thanks to his bishop-pair and domination over the d-file, White has a better ending. Having examined all these variations, we can only reiterate our preference for 7 ... dxc4.

10 White Avoids the Cambridge Springs: Minor Lines 1 d4 dS 2 c4 e6 (D)

A: 3liJf3 B: 3liJc3

162 16S

A)

In this chapter and the next, we provide brief coverage of a recommended repertoire that Cambridge Springs players can follow when facing White's attempts to avoid the Cambridge Springs itself. Some of these lines are similar to the Cambridge Springs (perhaps White places a piece differently, or plays his moves in an unusual order), but some are wholly different, such as Exchange Variations or lines with .if4. In our coverage of lines of the mainstream QGD, two of our main sources have been ECO and Lasha Janjgava's book The Queen's Gambit and Catalan for Black. In many cases we have quoted their assessments having checked that we agree with them, of course. Now:

3 liJO liJf6 4 e3 4.ig5 (4liJc3 is Line B4) 4 ... c6 5 e3 liJbd7 6liJbd2 (6liJc3 leads back to familiar territory) 6 ... h6 7 .ih4 .id6 8 .id3 0-0 9 0-0 (9 e4, Lynch-Ledoux, e-mail 1996, 9 ... dxe4!? 1OliJxe4 'iVaS+ 11 liJc3 .ib4 12 'iVc2 cS with good counterplay) 9 ... eS 10 .ig3 (10 cxdS cxdS 11 dxeS liJxeS 12 liJxeS .ixeS = 13 'iVb3? .ixh2+ 14 ~xh2 liJg4+ IS ~g3 gS 16 .ixgS bxgS 17 .ie2 'iid6+ 18 f4, Mephisto Vancouver-Saitek SPARC, Rehburg 1993, 18 ... liJh6! with a dangerous initiative) 1O...'iVe7 11 cxdS cxdS 12 dxeSliJxeS 13lZJxeS .ixeS 14.ixeS 'iVxeS IS 'iVb3 .ig4! 16 h3 .ihS 17 .:tac1 d4 18 liJc4 'iidS 19 exd4 'iVxd4 112-112 Rivas-Yusupov, Minsk 1982. 4 •.•a6 SliJc3 Also: a) S 'iVc2 dxc4 6 .ixc4 bS 7 .id3 .ib7 8 liJbd2 liJbd7 9 0-0 cS with counterplay, Kavsek-Palac, Nova Gorica 2002. b) S b3 cS 6 .ie2 (6 i.b2 liJc6 7 liJbd2 i.e7 8 .ie2 0-0 9 0-0 .:te8 10 :tel .if8 11 .in cxd4 12 exd4 b6 13liJeS i.b7 = Tibensky-Certek, Pila 1992; 6 cxdS 1i'xdS 7 liJc3 'iVd8 8 .id3 cxd4 9 liJxd4 eS = Vospemik-Orel, Portoroz

WHITE A VOIDS THE CAMBRIDGE SPRINGS: MINOR LINES

1994; 6 i.d3 ltJc6 7 i.b2 i.d6 8 0-0 0-0 9ltJc3 b6 10 l:c 1 cxd4 11 exd4 i.f4 12 l:al i.b7 13 "e2 l:e8 = BezgodovIvanov, Russian Ch 1997) 6... cxd4 7 exd4 i.b4+ 8 i.d2 i.e7 9 0-0 b6 10 ltJc3 i.b7 11 i.g5ltJbd7 12 l:c1 0-0 13 cxd5 ltJxd5 14 i.xe7 'ii'xe7 15 ltJxd5 i.xd5 =Kurajica-I.Sokolov, Yugoslav Cht 1991. c) 5 ltJbd2 c5 and then: c 1) 6 b3 cxd4 7 exd4ltJc6 8 i.b2 g6 9 i.e2 i.g7 10 0-0 0-0 I1ltJe5ltJd7 12 ttJxc6 bxc6 13 ttJf3 'ii'a5 = Polugaevsky-Korchnoi, Antwerp 1993. c2) 6 cxd5 exd5 7 dxc5 i.xc5 8 a3 (8 ttJb3 i.d6 9 h3 0-0 10 i.d3 ttJc6 11 0-0 ttJe4 12 i.d2 'ii'f6 13 ttJbd4 l:e8 14 i.c3 'ii'h6 15 l:el ttJxd4 16 i.xd4 l:e6 with an initiative, Bunzmann-Krivoshei, Meisdorf 1996) 8... ttJc6 9 b4 i.a7 10 ttJb3 0-0 11 i.b2 i.g4 12 i.e2 'ii'e7 13 0-0 l:ac8 14 ltJbd4 ttJxd4 15 ttJxd4 i.d7 16 i.d3 "e5 17 'ii'e2 i.b8 with counterplay, Rashkovsky-Rabiega, Berlin 1996. c3) 6 dxc5 i.xc5 7 b3 (7 a3 dxc4 8 i.xc4 b5 9 i.e2 i.b7 10 b4 i.b6 11 i.b2 ttJbd7 12 0-0 0-0 13 a4 112-112 Slobodjan-Ribli, Bremen 2001) 7...0-0 8 i.b2 "e7 9 a3 ttJc6 10 'ii'c2 l:d8 11 i.d3 d4 12 exd4 ttJxd4 13 ttJxd4 i.xd4 14 i.xd4 l:xd4 15 ttJf3 l:d6 160-0 b6 17 l:fdl i.b7 = Malaniuk-Ivanchuk, Yalta 1995. S•••cS 6 cxdS exdS (D) 7.te2 Other moves are: a) 7 b3 ttJc6 8 i.b2 cxd4 9 ttJxd4 i.d6! 10 i.e2 0-0 11 0-0 l:e8 12 l:c1 i.b8! = Bisguier-Kaplan, Lone Pine 1980. b) 7 i.d3 ttJc6 8 h3 (8 0-0 i.d6 9 a3 0-0 10 dxc5 i.xc5 11 b4 i.a7 12 ttJe2

163

i.g4 13 i.b2 l:e8 14 ~3 ttJe4 with counterplay, Trtanj-Pokoma, Rijeka 2002; 8 dxc5 i.xc5 90-00-0 10 i.d2 l:e8 11 l:cl i.a7 = Bum-Em.Lasker, Hastings 1895) 8... i.d6 9 0-0 (9 dxc5 i.xc5 10 a3 0-0 11 0-0 112-112 PivardPraud, Val Thorens 1989) 9... 0-0 10 dxc5 i.xc5 11 b3 l:e8 12 i.b2 i.a7 13 ttJe2 'ii'd6 14 ttJed4 ttJe4 15 ttJxc6 bxc6 16 i.xe4 l:xe4 17 ttJg5 l:e7 18 'ii'h5 112_112 Sarwinski-Panczyk, Warsaw 1985. 7•••ttJc6 8 0-0 Not better is 8 dxc5 i.xc5 9 0-0 0-0 10 b3 (10 ltJd4 'ii'd6 11 b3 i.e6 12 i.b2 liJxd4 13 exd4 112-112 Markovic-Todorovic, Pancevo 1989; 10 a3 i.a7 11 b4 d4! = Fuchs-Panno, Varna OL 1962) 10... d4 (= ECO) 11 exd4 ttJxd4 12 ttJxd4 i.xd4 13 i.b2 ttJe4 (13 ... l:b8 14 i.f3 l:e8 112-112 Lamprecht-Bock, Budapest 2000) 14 ttJxe4 i.xb2 15 'ii'xd8 l:xd8 16 l:adl i.d7 17 l:d2 i.c6 18 l:xb2 i.xe4 19 f3 i.c6 20 ~f2 ~f8 21 l:.dl 112-112 Gheorghiu-de Firmian, Baden-Baden 1981. 8••• i.d6 9 dxcS .txcSl0 b3 Or 10 a3 0-011 b4 (11 "c2 'ii'e7 12 b4 .ta7 13 i.b2 l:.d8 14 b5 axb5 15 ttJxb5 i.b8 16 a4 ttJe417 l:.fdli.f5 18 'ii'b3 i.g4 = Karlsson-Raaste, Helsinki

164

THE CAMBRIDGE SPRINGS

1981) 11....i.a7 12 .i.b2 (12 b5 axb5 13 liJxb5 .i.b6! 14 .i.b2liJe4 15 l:.c1 .i.e6 16liJbd4 .i.d7 17 liJxc6 .i.xc6 18 liJd4 .i.a4 19 'it'd3 l:.e8 20 liJf5 f6 21 .i.d4 .i.xd4 22 'iixd4 l:.e5 23 liJg3 .i.c6 with equality, Franco-Bellon, Spanish Cht 1994) 12 ... d4 13 exd4liJxd4 14liJxd4 .i.xd4 15 .i.f3 l:.b8 16 'it'd2 .i.g4 17 .i.xg4liJxg4 18 'it'f4 'it'f6 1/2- 1/2 GulkoSpeelman, Spanish Cht 1996. 10•••0-0 Not 10... d4? 11 liJa4 .i.a7 12 exd4 liJxd4 13 liJxd4 .i.xd4 14 .i.a3 and White is much better. ll.i.b2 llliJa4.i.a7 12 .i.a3 l:.e8 13 .i.c5 b6 14 .i.a3 b5 15 l:.cl bxa4 16 l:.xc6 .i.b7 17 l:.c2 axb3 18 axb3 liJe4 co Yanvariov-A.Rychagov, Moscow Ch 1996. 1l....i.a7 12 l:.c1 Others: a) 12liJbl (Skembris-Makropoulos, Athens 1986) 12 ...'iVe7 13liJa3 l:.d8 14 liJc2 liJe4 co Kasparov. b) 12 liJa4 liJe4 13 l:.c1 l:te8 14 liJd4 'iVg5! 15 liJxc6 bxc6 16 .i.d4 .i.h3 17 i.f3 .i.xd4 18 'it'xd4 l:.e6 with an attack, Renet-Conquest, Clichy 2001. 12•••'iid6 12 ... l:.e8!? is also good: a) 13 h3 (Ghitescu-Espig, Polanica Zdroj 1977) 13 ... i.e6 = Ghitescu. b) 13 'iid3 d4! 14 exd4 liJxd4 15 liJxd4 'it'xd4 16 'iVxd4 .i.xd4 17 .i.f3 l:.b8! 18 l:.fdl .i.e5 19 h3 .i.f5 with an equal position, Abramovie-J.Petronie, FYROM 1997. c) 13 liJa4 liJe4 1/2- 1/2 lIvanov-Inkiov, Montecatini Terme 2001. d) 13 l:.c2!? (Foisor-Pekarek, Tbilisi 1986) and now, according to Kasparov Black should play 13 ... d4 14 exd4 (14 l:.d2? dxc3 15 J:hd8 l:.xd8 +)

14... liJxd4 15 .:I.d2 (15 liJxd4 'iVxd4 16 l:.d2 'ii'h4! =) 15 ... liJxe2+ 16 liJxe2 'iVe7 17 l:.e 1 .i.g4! =. 13 'iic2 Other continuations also fail to give White an advantage: a) 13 liJa4 liJe4 14 liJd4 .i.d7 (or 14... i.b8 15 g3liJe5 16 f4liJg617 'iVc2 .i.a7 18 'iVc7 'iVxc7 19 .:I.xc7 b5 1/2- 1/2 Farago-Bezold, Budapest 1993) 15 .i.f3 liJe5 16liJc3 .i.xd4 17 i.xe4liJg4 18 g3 'iVh6 19 h4 co Murshed-King, Oakham jr 1984. b) 13 l:.c2 .i.f5 14 l:.d2 l:.ad8 (Black can also continue 14...l:.fd8 15 'iVaI, Mozetie-Ostojie, Vmjacka Banja 1999, 15 ... l:tac8 16 l:.fdl 'iVe6 =) 15 'iVaI .:I.fe8 16 l:.fdl 'iie6 =Tyrtania-Blauert, 2nd Bundesliga 1998/9. c) 13 liJbl .:I.d8 14 liJd4 (14 i.a3 'iVe6 15 .i.c5 .i.xc5 16 l:.xc5 liJe4 17 l:lcl 'iVg6 18 'St>hl 'iVf6 gives Black the initiative, Agzamov-Gavrikov, USSR Ch 1981) 14... .i.b8 15 g3 .i.h3 16 l:.el i.a7 17 .i.a3 'iVd7 18 .i.c5 .i.xc5 19 l:.xc5 liJe4 20 l:.c1 l:.ac8 1/2-1f2 Cifuentes-Sosonko, Dutch Ch 1997. d) 13 a3 .i.g4 14 b4 .:I.ad8 15 liJa4 liJe4 16liJd2 liJxd2 17 'iVxd2 .i.xe2 18 'iixe2 d4 19 liJc5 .i.xc5 20 l:.xc5 with counterplay for Black, Bonsch-Lobron, Thessaloniki OL 1988. 13•.•.:I.d8 14 l:.fdl .i.g4 Or 14 ...'iie7 15 .:I.d2 (Portisch-Gligorie, Niksie 1983) 15 ... .i.e6! = Portisch. 15liJg5 15liJxd5liJxd5 16 e4liJcb4 17 'ili'bl (17 'ili'd2? liJf4! -+) 17 ... 'iih6 18 exd5 liJxd5 co Kasparov. 15••.d4 16liJxh7 16 exd4 'iif4 17 'iid2 'ili'xd2 18 l:.xd2 l:.xd4 = Ftacnik.

WHITE AVOIDS THE CAMBRIDGE SPRINGS: MINOR LINES

16•••lLlb417 "'bllLlfd5! 18lLle4 L.Spassov-Ftacnik, Malta OL 1980. Now 18 ......h6 19 i.xg4 dxe3! is unclear (Ftacnik). B)

3 lLlc3 lLlf6 (D)

w

Now: Bl: 4 e3 165 B2: 4 i.f4 166 B3: 4 i.g5 lLlbd7 5 e3 c6 166 168 B4: 4 lLlf3 lLlbd7 B5: 4 cxd5 exd5 174 B1) 4 e3 i.e7 5 lLlf3 0-0 6 b3 Other moves: a) 6 i.e2 dxc4 7 i.xc4 - 6 i.d3 dxc4 7 Lc4. b) 6 i.d3 dxc4 7 i.xc4 c5 (this gives Black an extra tempo compared with the Queen's Gambit Accepted; also possible is 7 ... a6 8 a4 c5 9 0-0 lLlc6 10 lLle5 lLlb4 11 "'e2 b6 12 dxc5 i.xc5 =Serper-Ivanchuk, Sochi 1986) 8 0-0 (8 dxc5 "'xdl+ 9 ~xdl i.xc5 10 a3 lLlbd7 11 b4 i.e7 gives Black good play, Dzindzichashvili-Balashov, Leningrad 1971) 8 ... cxd4 9 exd4 a6 10 lLle5 b5 11 'it'f3 lta7 12 i.b3 i.b7 with

165

good play for Black, Dizdarevic-Kozul, Sarajevo 2001. c) 6 "'c2 c5 and here: c1) 7 cxd5 cxd4 8 lLlxd4 (8 exd4 exd5 =Asberg-Lindeberg, COIT. 1988) 8 ... lLlxd5 9 i.e2 (Ronkanen-Nylund, COIT. 1973) 9 ... lLlxc3 10 "'xc3 e5 11 lLlf3 lLlc6 with good play for Black. c2) 7 dxc5 i.xc5 8 i.e2 (8 cxd5 exd5 9 i.e2lLlc6 10 0-0 "'e7 11 ltdl i.e6 12 a3 ltac8 13 'it'd3 I1fd8 = Fieandt-Taivainen, Finnish Cht 1996/7; 8 a3 lLlc6 9 b4 i.d6 10 i.b2, Shariyazdanov-Ciric, Bie11999, 1O... a5! 11 b5 lLle5 12 lLlxe5 i.xe5 13 ltdl l:.e8 14 i.d3 i.d7 00) 8 ... lLlc6 9 0-0 'ike7 (or 9 ... dxc4 10 i.xc4 i.d7 11 a3 i.d6 12 .:tdl, Reyes-Navas, 1999, 12... 'ikb8!? 13 b3 lLle5 14lLlxe5 i.xe5 15 f4 i.d6 intending ... i.c6 =) 10 a3 dxc4 11 i.xc4 (lonescu-Vidoniak, Drobeta 1993) 1l...i.d6 12 I1dllLle5 13lLlxe5 i.xe5 14 i.d3 i.d7 =. 6••.c5 7 i.d3 Or: a) 7 cxd5 cxd4 8 lLlxd4 lLlxd5 9 i.d2 i.f6 (Laylo-Villamayor, Quezon City 2001) 10 l:.cl i.xd4 11 exd4lLlc6 =

b) 7 i.b2 cxd4 8 exd4 lLlc6 9 i.e2 dxc4 10 bxc4 'ikb6 = Balashov-Aleksandrov, St Petersburg 1996. 7.•.cxd4 8 exd4 i.b4 9 i.b2 9 i.d2?! dxc4 10 bxc4 e5 11 lLle4 i.xd2+ 12 'ikxd2 exd4 13 0-0 lLlc6 14 "'f4lLlh5! + Euwe. 9•••lLle4 10 'it'c2 "'a5 11 i.xe4 dxe4 12 lLld2 lLlc6 13 lLlcxe4 13lLle2 b5 14 c5 i.b7 00 1/2- 1/2 Hoffman-San Segundo, Buenos Aires 1995. 13•••l:.d8 140-0 lllxd4!? 15 i.xd4 ltxd4 The position is level.

166

THE CAMBRIDGE SPRINGS

82) 4 i.r4 dxc4 5 e3 Worse are: a) 5 'ii'a4+ i.d7 (5 ... lLlc6!? 6 'ii'xc4 lLld5 7 lLlxd5 exd5 8 'ii'd3 i.b4+ with good play for Black) 6 'ii'xc4 i.d6 7 i.g5 h6 8 i.h4 (Chernin-Andersson, Madrid 1988) 8... i.c6!? 9 f3lLlbd7 10 e4 i.e7 =. b) 5 e4?! i.b4 6 f3 b5 7 a4 c6 8 axb5?! (8 lLlge2 0-0 9 ~f2 'ii'b6 10 b3 ':d8 +) 8 ... cxb5 9 i.xb8 ':xb8 10 ':xa7? i.a5 11 e5 lLld5 -+ J.Gonzales-J.C.Diaz, Matanzas 1992. c) After 5 a3 lLld5 6 i.d2 (PadinPerez de Aranda, Madrid jr 1999) 6 ...lLlxc3 7 bxc3 b5 8 e4 c5 White does not have compensation for the pawn. 5 ...lLld5 6 i.xc4lLlxf4 7 exf4 i.d6 8 'ii'f3 Or 8 g3 lLld7 9 lLlf3 lLlf6 (9 ... a6 10 a40-0 11 0-0 lLlf6 12 'ii'e2 b6 13 lLle5 i.b7 '+ Taskovits-Mathe, Hungarian Cht 1994) 10 0-0 0-0 11 'ii'e2 b6 (ll...a6!? 12lLle5 b5 13 i.d3 i.b7 '+) 12 lIfdl! (12lLle5 i.b7 13 a3, Tartakower-Becker, Karlsbad 1929, 13 ... a6 '+) 12 ... i.b7 13 lIacl a6 14lLle5 (14 i.d3 'ii'e7 15lLle4, Botvinnik-Ragozin, Leningrad 1930, 15 ... lLldS +) 14... 'ii'e7 = ShereshevskyKlovan, Vilnius 1974. 8•••0-09 lIdl 9 lLlge2 i.d7 10 0-0 i.c6 11 d5 exd5 (Doroshkievich-Baburin, Voronezh 1988) 12 i.xd5 :e8 13 lIadl i.xd5 14lLlxd5lLlc6 =. 9...i.d7 10 'ii'e3 i.c6 lllLlr3 lLld7 12 0-0 lLlb613 i.d3 i.xf314 'ii'xfJ c6 The position is equal (ECO), MilesKurajica, Surakarta 1982.

83) 4 i.g5 lLlbd7 5 e3 c6 (D)

Now: 166 B31: 6 'ii'c2 B32: 6 i.d3 167 167 B33: 6a3 Of course, 6 lLlf3 'ii'a5 is a standard Cambridge Springs.

831) 6 'ii'c2 'ii'aS 7 cxd5 lLlxd5 8 e4 Or: a) 8 lLlf3 - 5 lLlf3 c6 6 e3 'ika5 7 cxd5lLlxd5 8 'ikc2. b) 8 i.h4 i.b4 9lLle2 (9lLlf3 is similar to lines of the Cambridge Springs proper, but White has voluntarily retreated his bishop to h4, rather than waiting to be pushed by ...h6) 9 ... 0-0 10 e4 lLle7 11 a3 lLlg6 12 i.g3 e5 13 lIdl =Prins-Page, StockholmOL 1937. 8 ...lLlxc3 9 i.d2 'ii'a4 10 'ii'xc3 a5 lllLlf3 i.b412 'iib3 No better are: a) 12 'ii'e3 'ii'c2 (or 12 ... i.xd2+ 13 'ii'xd2 'ii'b4 14 lIcl! e5 15 a3 'ii'xd2+ 16 ~xd2 exd4 17 lLlxd4 0-0 18 i.c4 ;!; Eingorn-Inkiov, Zagreb IZ 1987) 13 i.d3 'ii'xb2 140-0 i.xd2 15 lLlxd2 e5 16 dxe5 lLlxe5 17 f4lLlg4 (Black can also play 17 ... lLlxd3!? 18 'ii'xd3 'ii'b6+ 19 ~hl 0-020 lLlc4 'ii'c7 21 e5 i.e6 22 lLld6 f6 '+) 18 'iie2 'ii'd4+ (or 18 ... 0-0

WHITE AVOIDS THE CAMBRIDGE SPRINGS: MINOR LINES

19 tDf3 {19 tDc4 'it'd4+ 20 '1fi>hl bS +} 19 ... 'it'xe2 20 i.xe2 tDf6 21 eS tDdS +) 19 ~hl 0-0 (19 ...'it'e3?! 20 tDc4 'it'xe2 21 i.xe2 tDf6 22 i.f3 gives White compensation - Eingom) 20 tDf3 (20 tDc4 bS!) 20 ...'ife3 21 'it'xe3 tDxe3 22 .:tfe 1 tDg4 +. b) 12 'it'cl 0-0 13 a3 i.xd2+ 14 'ii'xd2 eS IS l:tc1 exd4 16 l:tc4 'it'bS 17 .:txd4 'ii'cs 18 i.e2 'it'e7 = CapablancaAlekhine, Buenos Aires W ch (9) 1927. 12.••i.xd2+ 13 ~xd2 'it'b4+ 14 'it'xb4 axb4 15 i.d3 b6 16 e5 i.b7 The position is level (ECO), Eingom-Panczyk, Polanica Zdroj 1984.

832) 6 i.d3 'ii'aS 7 i.h4 7 tDf3? - 5 tDf3 c6 6 e3 'ila5 7 i.d3? 7...dxc4 Or: a) 7 ... cS!? 8 tDf3 dxc4 9 i.xc4 i.e7 10 0-0 0-0 11 i.b3 l:td8 (l1...cxd4 12 exd4 b6 13 dS Miles) 12 'ii'e2 (12 'ii'e 1!? {intending tDdS} 12... b6 13 tDeS Miles) 12...b6 and now White should settle for 13 l:tfdl with equality, since 13 tDeS? i.a6 14 'ii'f3 (Miles-Flear, Wijk aan Zee 1987) runs into the surprising 14... cxd4! +, since IS tDc6 is met by IS ... tDeS. b) 7 ... i.b4 is well met by 8 tDe2!. 8 i.xc4 b5 9 i.d3 Worse is 9 i.b3 i.b7 (9 ... b4 10 tDce2 i.a6 11 tDf3 i.e7 120-00-0 13 .:tel l:tfe8 14 tDf4 cS IS e4 c4 '" Korchnoi-Ljubojevic, Tilburg 1986) 10 tDf3 (10 tDge2?! cS 11 0-0 c4 12 i.c2 b4 gives Black the initiative) 10... cS 11 dxcS i.xcs (11...tDxcS!? 12 i.xf6 gxf6 Alekhine) 12 0-0 0-0 13 tDd4 a6! 14 'ili'e2 b4 IS tDa4 i.xd4 16 exd4 tDdS 17

167

i.g3 i.c6 18 'it'c2 i.xa4 19 i.xa4 l:tac8 Capablanca-Alekhine, Buenos Aires Wch (31) 1927. 9...b4 Or 9 ... i.b7: a) 10 a3 cS 11 tDf3 c412 i.c2 (Makarov-Scherbakov, Kuibyshev 1990) 12 ...tDdS 13 0-0 tDxc3 14 bxc3 'ii'xc3 IS e4 with compensation and an initiative (Scherbakov). b) 10 tDe2 a6 11 i.xf6 tDxf6 12 a3 'iVb6 13 tDe4 tDxe4 (13 ... cS!? Alekhine) 14 i.xe4 cS IS dxcS i.xcS 16 i.xb7 'it'xb7 170-00-0 18 l:tcl l:tac8 112_112 Capablanca-Alekhine, Buenos Aires Wch (33) 1927. 10 tDce2 10 tDb 1 i.a6! =. 10...c511 tDf3 i.b712 0-0 l:tc8 The position is equal (ECO), Omstein-Sveshnikov, Le Havre 1977.

+

833) 6 a3 i.e7 7 tDf3 Or 7 l:tcl 0-08 tDf3 (we have now transposed to a line of the Classical QGD where White's a3 represents quite a slow approach, but is not entirely illogical) 8... h6!?: a) 9 i.h4 tDe4 (an approach akin to the Lasker Variation makes good sense here) 10 i.xe7 (10 i.g3 tDdf6 11 i.d3 tDxg3 12 hxg3 dxc4 13 i.xc4 cS 14 dxcS i.xcs = Miles-Yusupov, London tt 1984) 1O... 'ii'xe7 and then: al) 11 'ii'c2 tDxc3 12 'it'xc3 dxc4 (12 ... l:te8 13 i.e2 dxc4 14 i.xc4 eS IS dxeS tDxeS 16 tDxeS 'ii'xeS 17 'it'xeS l:txeS 180-0 i.e6 = Macskasy-Keres, Vancouver 1975) 13 i.xc4 b6 14 0-0 i.b7 IS .:tfdl cS 16 dxcS tDxcs 17 'it'eS l:tac8 18 b4 tDd7 19 'it'f4 :fd8 20 h3 tDf6 21 tDd4 (21 tDeS =) 21..Jbc4 22

168

THE CAMBRIDGE SPRINGS

l:hc4 e5 23 'iig3 exd4 24 l:tdxd4 l:txd4 25 l:txd4 ..Ild5 26 'iif4 'ilfb7 =1= liz-liz I.Sokolov-Timman, Erevan OL 1996. a2) 11 ..Ild3 lLlxc3 12l:hc3 dxc4 13 ..Ilxc4 e5 14 0-0 e4 15 lLld2 lLlf6 16 'iic2 liz-liz Bertok-Simic, Zagreb 1977. b) 9 ..Ilf4!? lLlh5! 10 ..Ile5!? (10 c5 lLlxf4 11 exf4, Zalys-Ferencz, Montreal 1956, l1...b6 =1=; 10 'iic2 dxc4 11 ..Ilxc4 lLlxf4 12 exf4 lLlb6 13 .td3 ..Ild6 14 lLle5 lLld5 =1=; 10 ..Ilg3 lLlxg3 11 hxg3 lLlb6 =) 1O ... lLlhf6 (10 ... lLlxe5 11 dxeS g6 12 'iic2 b6 13 ..Ile2 ! Goldin-Rodriguez Talavera, Dos Hermanas 1991) 11 ..Ilg3 (11 .td3 dxc4 12 .txc4 lLlxeS 13 lLlxeS 'iib6 14 'iie2 cS =) 11... lLlhS 12 .te2 lLlxg3 13 bxg3 lLlb6 (13 .. Jle8!?) 14 lLld2 (14 cS lLld7 IS b4 "fIc7 intending ... eS =) 14 ... ..Ilf6 IS "fIc2 e5 16 dxeS ..IlxeS 17 cxdS lLlxdS 18 lLlxdS 'iixd5 =. 7 .••lLle4!? 8 lLlxe4 8 ..Ilxe7 'fixe7 9 'fic2 lLlxc3 10 'iixc3 0-0 = Bogoljubow-Thomas, Karlsbad 1929. 8...dxe4 9 ..Ilxe7 'fixe7 10 lLld2 f5 11 c5 11 'iihS+ g6 12 'iih6 b6 13 0-0-0 .tb7 is unclear, Lebredo-Vilela, Havana 1985. 11...0-0 12 lLlc4 b6 13 b4 ..Ita6 14 ..Ile2 ..Ilxc4 15 .txc4 as The position is equal (ECO), EuweBogoljubow, Karlsbad 1941.

84) 4 lLlf3 lLlbd7 (D) Now: B41: 5 e3 169 B42: 5 ..Ilg5 169 B43: 5 ..Ilf4 170 B44: 5 cxd5 171 Less popular are:

a) S "fIc2 dxc4 6 e4 cS 7 dxcS (7 dS exdS and now 8 exdS is unclear, while 8 eS lLlxe5! 9 lLlxe5 .td6 10 'iia4+ ~f8 gives Black counterplay - Kasparov) 7 ... ..Ilxc5 8 ..Ilxc4 a6 9 a4 'fic7 10 0-0 lLlg4 (10 ... ..Ilxf2+?! 11 'iixf2 'fixc4 12 e5 gives White an attack - Kasparov) 11 h3 (Kasparov-Seirawan, Amsterdam 1996) ll...lLlgeS! 12 lLlxeS lLlxeS 13 ..Ile2 0-0 =Kasparov. b) S 'fib3 dxc4 6 'fixc4 a6 and now: bl) 7 a4 c5 8 e3 bS 9 'fib3 b4 + Ingolotti-Rossetto, Miramar 1970. b2) 7 e4 bS 8 "fId3 (8 'fic6 l:tb8 9 ..Ilf4..1lb7 10 'fixc7 'fixc7 11 .txc7 l:tc8 +) 8 ... ..Ilb7 9 eS lLld5 10 ..IlgS .te7 11 .txe7 'fixe7 + Savon-Panchenko, Severodonetsk 1982. b3) 7 ..IlgS cS (Cebalo-P.Schlosser, Munich 1989) 8 dxc5 =. b4) 7 g3 cS 8 dxcS ..IlxcS 9 ..Ilg2 bS 10 'fib3 ..Ilb7 11 0-0 0-0 =1= DintheerKamber, Zurich 2000. bS) 7 ..Ilf4 c5 8 dxcS ..IlxcS 9 b4 (9 e3 bS 10 'fib3 .tb7 11 ..Ile2..1le7 120-0 lLlcs 13 'fidl 0-0 =1= Duppel-Fancsy, Gyula 1997) 9 ... bS 10 'fib3 .te7 11 l:tdl (11 e4..1lb7 12 lLld2 0-0 =1= BertokKliska, Zagreb 1998) 1l.....Ilb7 12 lLleS lLldS 13 lLlxdS ..IlxdS gives Black excellent play.

WHITE A VOIDS THE CAMBRIDGE SPRINGS: MINOR LINES

B41} 5 e3 i.e7 S... c6 transposes to a Semi-Slav, which of course is not part of the repertoire we are presenting here. 6i.d3 Other moves: a) 6 i.e2 dxc4 7 i.xc4 - 6 i.d3 dxc4 7 Lc4. b) 6 b3 dxc4!? (a slightly paradoxical but effective move) 7 bxc4 (7 i.xc4 a6 8 i.b2 bS 9 i.d3 i.b7 10 0-0 cS 11 a4 b4 12 liJa2 0-0 =) 7 ... b6 8 i.d3 (8 lIbl i.b7 9 i.d3 cS =) 8... i.b7 9 0-0 cS 10 'ii'e2 a6 11 a4 'ii'c7 =. c) 6 cxdS (with the dark-squared bishop shut in on c1, the Exchange Variation is not a good idea) 6 ... exd5 7 .ltd3 0-0 8 0-0 c6 9 'ii'c2 (9 lIbl as 10 a3 i.d6 11 b4, Zysk-Lukacs, Budapest 1987, ll...axb4!? 12 axb4 lIe8 13 bS cS with good play for Black) 9 ... lIe8 10 liJeSliJf8 11 i.d2liJg4 12liJe2 i.d6 13 f4 f6 14 liJxg4 i.xg4 = Nemet-Portisch, Biel 1998. d) 6 'ii'c2 0-0 7 .ltd3 dxc4 8 .ltxc4 cS (again we see a Queen's Gambit Accepted with an extra tempo for Black) 9 0-0 cxd4 10 exd4liJb6 11 i.d3 .ltd7 12 .ltgS h6 13 .lte3 liJbdS = KurajicaCvetkovic, Yugoslav Cht 1991. 6...0-0 6 ... dxc4!? 7 .ltxc4 a6 8 e4 (8 a4 c5 9 dxcS 0-0 10 0-0 .ltxcs 11 'ii'e2 b6 12 e4 .ltb7 =) 8... bS 9 .ltd3 i.b7 (9 ... cS!? 10 eS liJg4 11 .lte4 lIa7 12 i.e3 0-0 =intending ... fS) 10 eS liJdS 11 a4 b4 12 liJe4 cS = Burmakin-Skomorokhin, St Petersburg 1996. 70-0 dxc4 8 .ltxc4 c5 9 'ii'e2 a6 10 a4 10 dxcS .ltxcS 11 i.d3 bS 12 lId 1 .ltb7 =.

169

10...cxd4 11 exd4 liJb6 12 i.b3 i.d7 12 ... liJbd5 13 ':'dl b6 14liJeS .ltb7 = Razuvaev-Cvetkovic, Belgrade 1988. 13liJe5 i.c6 14liJxc6 14 lIdl liJbd5 = Poluliakhov-Gleizerov, Cappelle la Grande 1995. 14.••bxc6 15 a5liJbd5 16 .ltc4 Seirawan-Andersson, Tilburg 1992. Black can now play 16 ....ltd6!? 17 i.gS 'ii'c7 18 h3 i.b4 =.

B42} 5 .ltg5 c6 Now 6 e3 'ii'aS is of course a Cambridge Springs; here we shall only consider White's other options. 6e4 6 'ii'c2?! is well met by 6 ... dxc4! 7 e4 (7 a4 i.b4 8 e3 bS 9 axbS cxb5 10 liJd2 'ii'b6 11 b3 liJdS + Danilov-Kostanjevec, Stockerau 1993) 7 ... bS: a) 8 eS h69 .lth4 gS 10 liJxgS hxgS 11 .ltxg5 looks similar to a Semi-Slav Botvinnik System, but the differences are in Black's favour; e.g., 11.. ..:.hS 12 .ltxf6 liJxf6 13 exf6 'ii'xd4 = KotovTroitsky, Leningrad 1938. b) 8 a4 'iiaS (8 ... i.b4!?; 8 ...'ii'b6!?) 9 i.d2 i.b4 10 i.e2 with compensation, Bang-Lund, Copenhagen 1993. c) 8 .lte2 h6 9 i.h4 (9 .lte3!? is another possibility) 9 ... 'ii'a5 10 0-0 .ltb7 11 lIfe 1 (Ratner-Tolush, Moscow 1945) 1l...i.b4 =i=. 6.•.dxe4 7liJxe4 .lte7 8liJxf6+!? Only this move might cause Black some problems. Other continuations: a) 8 .ltd3? liJxe4 9 i.xe7 'iixe7 10 .ltxe4 'iib4+ 11 'iid2 'ii'xc4 12 .ltd3 'iidS 13 0-0 0-0 does not give White compensation for the pawn, ZapataMaceda, Lima Ch 1999.

170

THE CAMBRIDGE SPRINGS

b) 8 ltJc3 0-0 and then: bl) 9 .i.d3 cS 10 0-0 b6 11 'iVe2 (11 :el .i.b7, Napier-Teichmann, Glasgow 1905, 12 .i.e2!? =) 11....i.b7 12 dxcS .i.xf3 13 'iVxf3 (13 gxf3 ltJxcs GilgSpielmann, Karlsbad 1929) 13 ... ltJeS

+

b2) 9 'ii'c2 cS (9 ... eS, Alekhine-Lundin, Orebro 1935, 10 dxeS ±) 10 dxcS h6 11 .i.f4.i.xcS 12 .i.d3 eS =. b3) 9 .i.e2 cS 10 0-0 b6 11 'iVc2 h6 12 .i.h4 (Hausner-Gerstner, Prague 1990) 12... cxd4 13ltJxd4 .i.b7 =. c) 8ltJg3 0-09 SLd3 h6 (9 ... 'iVb6!? 10 'iVc2 SLb4+ =) 10 .i.f4 cS 11 dxcS ltJxcs 12 .i.c2 'iVb6 13 b3 :d8 14 'iVe2 =Zovak-Langer, Bonn 1995. 8•••SLxf6 9 .i.xf6 Or 9 'iVd2 0-0 10 0-0-0 (FrijlingFrandberg, corr. 1989; 10 .i.xf6 'iVxf69 .i.xj6 'iixf6 10 'iid2 0-0) 10... h6!? 11 .i.f4 cS 12 dxcS (12 .i.d6 SLe7 13 dxc5 ltJxcs 14 SLxcS 'iVxd2+ ISltJxd2 .i.xcs 16ltJe4 SLe7 17 cS eS =) 12... ltJxcs 13 'iVxd8 l1xd8 14 :Xd8+ .i.xd8 IS SLe3 b6 and Black should gradually equalize. 9 •••'iVxf6 10 SLd3 10 'iVd2 0-0 11 'iVgS b6 12 .i.d3 (12 'iVxf6ltJxf6 13 SLd3 SLb7 14 ~e2 :ac8 IS lIadl cS =) 12 ... .i.b7 13 'iVxf6ltJxf6 14 ~e2 cS IS dxcS bxcS 16 lIadll:Hd8 10•••c5 11 SLc2 11 SLe4 0-0 12 0-0 lId8 13 dS (13 'iVc2 cxd4 14 SLxh7+ 'iii'h8 IS SLd3 b6 16 SLe4 :b8 17 :adl eS =) 13 ... ltJb6 14 'ii'c2 exdS IS cxdS ltJxdS 16 :adl SLe6 17 'iVxcs b6 =. 11 ...b6 12 SLe4 12 SLa4 0-0 13 SLc6 :b8 - 12 SLe4 :b8 13 .i.c6 0-0. 12•••lIb8 13 .i.c6 0-0 14 'iVa4 a6 15 SLxd7 b5 16 SLxb5 axb5 17 cxb5 .i.b7

Black's initiative fully compensates for the sacrificed material.

843) 5.i.f4 This is a major option for White in the analogous position with ... .i.e7 substituted for ... ltJbd7. In the current situation, however, Black has a very effective reply. 5 •••dxc4! (D)

Black makes use of the fact that he can develop his king's bishop more actively, to b4. Now: B431: 6 e4 170 B432: 6 e3 170

8431) 6 e4 .i. b4 7 ltJd2 Alternatives: a) 7 'iVc2 bS and then: al) 8 e5 ltJdS 9 .i.g5 f6 10 exf6 ltJ7xf6 11 a4 .i.b7! 12 .i.e2 (12 axb5 ltJxc3 13 bxc3 .i.xf3 14 gxf3 'iVxd4 is much better for Black - I.Sokolov) 12... a6 13 0-0 c6 14 ltJeS 0-0 15 .i.g4 'iVd6 16 SLh3 .i.xc3 17 bxc3 cS is clearly better for Black, Van WelyI.Sokolov, Tilburg 1994.

WHITE AVOIDS THE CAMBRIDGE SPRINGS: MINOR LINES

a2) 8 a4 c6 9 i.e2 i.b7 100-0 (Littlewood-Tan, British League (4NCL) 1999/00) 1O... a6 11 }:tfbl c5 :j: 1 +. a3) 8 tDd2 c6 (8 ... i.xc3 9 bxc3 {9 'it'xc3 tDb6 10 b3 b4 11 'it'xb4 'ii'xd4 :j: Janowski-Wolf, Barmen 1905} 9 ... a6 10 a4 i.b7 11 }:tbl i.c6 12 i.e2 with compensation) 9 i.e2 'it'b6 10 i.e3 0-0 11 0-0 i.b7 gives Black a slight advantage. b) 7 i.xc4 tDxe4 8 0-0 tDxc3 9 bxc3 i.d6 10 i.g5 i.e7 11 i.xe7 (11 i.d2 0-0 12 'ii'e2 c5 13 }:tfdl cxd4 14 cxd4 tDf6 is much better for Black, VescoviKrasenkov, Malmo 1995) 1l...'ii'xe7 12 }:tel 0-0 Strating-Van der Weij, Dieren 1991. 7...cS!? Or: a) 7"'tDb6 8 a3 i.a5 9 i.e3 0-0 (Jankovic-Sertic, Croatian Cht 1998) 10 f3 lIe8 11 tDxc4 tDfd5 12 i.d2 tDxc3 13 i.xc3 i.xc3+ 14 bxc3 tDxc4 15 i.xc4 c5 =. b) 7 ... 0-0 8 i.xc4 tDb6 9 'ii'b3 c5 10 dxc5 i.xc5 11 i.e2 (11 }:tdl 'ii'e7 12 0-0 e5 =) l1...e5 12 i.g3 i.e6 with good play for Black, Dzuban-Baburin, Riga 1988. 8 dxe5 tDxe5 9 i.xe4 i.xe310 bxe3 tDfxe411 tDxe4 'it'xdl+ 12 l:txdl tDxe4 White does not have full compensation.

+

8432) 6 e3 tDd5!? 7 i.xe4 Or 7 i.g3 tDxc3 8 bxc3 b5 9 a4 c6 10 i.e2 i.b7 (1O ... i.e7!? 11 'ii'c2 a5 12 0-0 tDf6 <Xl) 11 0-0 a6 12 'ii'c2 with compensation, Cohn-Swiderski, Nuremberg 1906. 7...tDxf4 8 exf4 tDb6 9 i.b3 Or:

171

a) 9 0-0 i.e7 10 i.b3 0-0 11 }:tel was played in Bogoljubow-Kashdan, Stockholm 1930, and now ll...c6 12 tDe5 i.d6 is equal. b) 9 i.d3 tDd5!? 10 g3 i.e7 11 0-0 c6 =Lippert-Neubert, Bavaria 1994. 9...i.d6 10 'ii'd2 0-0 11 0-0 Kempinski-Krasenkow, Krynica 1997. Black can play l1...c6!? intending "'tDdS =.

844) 5 exd5 exd5 6 i.f4 We saw in Line B43 the reason why White should exchange on d5 first if he wishes to put his bishop on f4. This line is a reasonable attempt to keep an advantage. Other moves: a) 6 i.g5 c6 7 e3 (or 7 'ii'c2 i.e7 8 e3) 7 ... i.e7 8 'ii'c2 0-0 9 i.d3 - 4 cxd5 exd5 5 i.g5 c6 6 e3 i.e7 7 i.d3 tDbd7 8 'ikc2 0-09 tDf3. b) 6 'ii'c2 c6 and now: 7 i.f4 - 6 i.f4 c6 7 'ikc2; 7 i.g5 - 6 i.g5 c6 7 'ikc2. 6...e6 (D)

Now: B441: 7 'ii'c2 B442: 7 e3

172 172

172

THE CAMBRIDGE SPRINGS

Or 7 h3!? i.e7 8 e3 tDf8 9 i.d3 tDg6 10 i.h2 0-0 11 0-0 l:te8 12 tDeS tDxeS 13 i.xeS i.d6 (13 ... tDd7 14 i.h2 tDf8 IS "c2 i.d6 16 i.xd6 ~xd6 17 ltael ;t; Botvinnik-Byvshev, USSR Ch 19S2) 14 i.xd6 (14 f4 i.b4 IS "c2 i.xc3 16 bxc3 tDe4 17 i.xe4 dxe4 18 fS f6 19 i.h2 b6 20 l:tf4 'fie7 21 g4 i.a6 is equal, Vaisser-Ekstrom, France 1998) 14.....xd6 IS ii'c2 g6 (IS ... i.e6!?) 16 ltfel i.d7 17 b4 gives White a slight advantage, Smyslov-Hiibner, Velden Ct (10) 1983.

B441) 7 "c2 tDhS 8 i.d2 Or: a) 8 i.g3 g6 9 e3 tDxg3 10 hxg3 i.g7 11 i.d3 - 7 e3 tDh5 8 i.g3!? g6 9 i.d3 fug3 10 hxg3 i.g7 11 'iVc2. b) 8 g3 i.e7 9h4 tDxf4 10 gxf4tDf6 110-0-0 g6 12 e3 liz-liz Bareev-Kramnik, BielIZ 1993. c) 8 i.gS i.e7 9 i.xe7 ii'xe7 10 g3 (10 e3 - 7 e3 tDh5 8 i.g5 i.e7 9 i.xe7 'iixe7 10 'iic2) 10 ... 0-0 (1O ... g6!? intending ...tDdf6 and ... i.fS; 1O... tDb6 11 i.g2 g6 120-0 i.fS 13 ii'c1 0-0 14 ltel ltad8 IS b3 ;t; Miles-Byrne, Reykjavik 1986) 11 i.g2 tDhf6 120-0 lte8 13 tDd2 tDf8 14 ltfel g6 IS e4! dxe4 16 tDdxe4 i.fS 17 tDxf6+ ii'xf6 18 ~3 tDe6! 19 ii'xb7 (19 dS tDcS! 20 "c4 tDd3 00) 19 ... tDxd4 20 l:txe8+ (20 ltadl I?) 20... ltxe8 21 'fixa7 tDe2+! with compensation - Sr.Cvetkovic. 8••.tDb69 0-0-0 Or: a) 9 e4 dxe4 10 tDxe4 i.e7 is equal, Bareev-Short, Linares 1992. b) 9 h3!? intending g4 - Bareev. 9 ••. i.e7 10 tDeS i.e6 11 e3 tDf6 12 i.d3 cS!

12... tDg4 13 i.el (13 tDxg4 i.xg4 14 f3 i.hS) 13 ... i.d6 (13 ... tDxeS 14 dxeS ;t; Rustemov) 14 tDxg4 (14 tDf3 !? tDf6 IS h3) 14... i.xg4 IS f3 i.hS 16 h4! (Rustemov-Kiriakov, Russian Ch 1997; 16i.xh7 g617 g4ltxh718 gxh5 IhhS 00 Rustemov) 16... i.g6 17 e4 dxe4 18 fxe4 ;t; Rustemov. 13 dxcS i.xcs 14 i.bS+ <M8 15 ~bl l::tc8 16 tDf3 ii'e7 Or 16... i.d6 17 tDd4 tDc4 18 i.xc4 l:txc4 19 ii'd3 ii'b6 20 l:tc1 a6 21 tDce2 1ite7 22 l:txc4 dxc4 =Schroeder-Thomson, e-mail 1999. 17 i.d3 i.b4 18 a3 i.d6 19 tDd4 i.d7 20 ii'b3 i.cs The position is equal, Siviero-Schroeder, e-mail 1999.

B442) 7 e3 tDhS (D)

Now: B4421: 8 i.g3!? 173 B4422: 8 i.g5 173 Other moves: a) 8 i.d3?! tDxf4 9 exf4 i.d6 10 g3 (10 tDeS 0-0 11 ~c2 {II 0-0 tDf6 is unclear - M.Gurevich} 11...ii'h4 12 g3 ii'h6 13 i.fS l:te8 14 0-0 tDf6 is

WHITE A VOIDS THE CAMBRIDGE SPRINGS: MINOR LINES

slightly better for Black, Zimlich-Bachmann, Bavaria 1998) 10 ... 0-0 11 0-0 l:.e8 12 'ikc2 1ZJf8 13 lZJdl f6 14 lZJe3 iLe6 =+= Alekhine-Lasker, New York 1924. b) 8 iLe5 lZJxe5 9 dxe5 g6 10 h3 i.b4 11 'ikb3 fie7 12 0-0-0 0-0 <Xl Balashov-Taimanov, Leningrad 1977.

B4421) 8 iLg3!? lZJxg3!? 8 ... g6 9 ..td31ZJxg3 10 hxg3 iLg7 11 b4 (11 'ikc20-0 12 0-0-0 l:te8 13 ..tbl lZJf8 14 e4 dxe4 15 lZJxe4 iLe6 =Gurevich-Csom, Hastings 1983/4; 11 fid2 0-0 12 b4l:.e8 13 0-0 lZJf8 14 b5 iLg4 15 bxc6 bxc6 =Mascarifias-Cvetkovic, Schellenberg 1991) ll...a6 12 0-0 0-0 13 a4 lZJb6 14 as lZJd7 15 lZJa4 ! Korchnoi-Csom, Titograd 1984. 9 hxg3 iLd6 10 iLdJ 10 'ii'c21ZJf6 I1lZJe5 g6 12 0-0-0 (12 f41ZJg4 13 'ii'd2 iLxe5 14 dxe5, Anastasian-Kiriakov, St Petersburg 1994, 14 ... iLe6 15 iLe2 'ikb6 =1=) 12 ... 'ii'e7 13 lZJf3 iLf5 14 iLd3 iLxd3 15 l:txd3 h6 with good play for Black. 10.•.lZJf6 11 fie2 11 'ikd2 fie7 120-00-013 l:.fel was played in Browne-Balashov, Taxco IZ 1985, and now 13 ... lZJe4! =1= is slightly better for Black. 11...h6 Or 1l...'ike7: a) 12 a3 g6 13 0-0-0 (alternatively, 13 0-00-014 b4!? l:.e8 with good play for Black, Seirawan-Andersson, Reykjavik tt 1986) 13 ... iLe6 =. b) 12 0-0-0 is a little better for White according to Balashov but it appears that chances are equal: 12... h6 (12 ... iLe6!? 13 ..tbl h6 =) 13 e4 dxe4 14 lZJxe4 lZJxe4 15 iLxe4 0-0 16 iLh7+

173

'iith8 17 iLd3 iLe6 with good play for Black, Marshall-Bernstein, New York 1925. 12 0-0-0 'ike7 Or 12...fliaS 13 ~bl iLe6 14 lZJg5 (Cruz-Schweber, Buenos Aires 1962) 14... ..tg4!? 15 l:.del iLe7 =. 13 ~bl iLe6 14 l:.c1 Weldon-Barat, Szeged 1993. Black can now play 14... 'ike7 15 1ZJh4 iLb4, with equality.

B4422) 8 iLg5 iLe7 9 iLxe7 'ikxe7 10 'ii'e2 Other moves: a) 10 lZJd2 lZJf4 11 'ikc2 lZJb6 12 0-0-0 lZJe6 13 iLd3 iLd7 14 ~b1 g6 15 h4?! (15 lZJb3!?) 15 ... 0-0-0 161ZJe2?! ~b8 17 l:.c1 iLc8 18 a3 lZJd7! 19 b4 lZJf6 20 ~a2 lZJg4 =+= Hertneck-Ivanchuk, Munich 1994. b) 10 g3!? g611iLg21ZJhf6 (11...0-0 12 0-0 lZJg7 13 l:.el lZJf5 14 a3 as 15 lZJa41ZJd6 16 l:.c1 l:.e8 17 'ikc21ZJe4 18 lZJd2 lZJxd2 19 'ikxd2 ! Tunik-Savon, Saratov 1993) 120-00-0 13 l:.ellZJb6 14 lZJe5 iLe6 15 h3 112-112 Blees-Giddins, Amsterdam 2001. c) 10 iLe2 lZJhf6 11 'ii'c2 1ZJe4 12 lZJxe4 dxe4 13 lZJd2 lZJf6 14 0-0 0-0 15 l:tfc1 (15 b4, Lengyel-Robatsch, Venice 1969, 15 ... l:.e8 =) 15 ... l:.e8 16 a3 iLg4 17 iLfl lZJd5 18 b4 a6 19 'ikb 1 l:.ad8 = Kuzmin-Nenashev, Tashkent 1987. d) 10 iLd31ZJf4 11 0-0 (11 iLfl 0-0 12 'ikc2 lZJf6 13 g3 lZJe6 14 iLg2 lZJe8 150-0 lZJd6 =Eperjesi-Z.Szabo, Budapest 1995) ll...lZJxd3 12 'ikxd3 lZJf6 13 lZJe5 0-0 14 a3 l:.e8 15 f3 lZJd7 16 lZJxd7 112-112 Kallai-Speelman, French Cht 1992. 10...g611iLe2

174

THE CAMBRIDGE SPRINGS

Or: a) 11 0-0-0 ttJb6 (1l...ltJ
The other main option is S .i.f4 .i.d6 6 .i.g3 c6 7 e3 (7 'ii'c2 0-0 {7 ... .i.xg3 8 bxg3 g6 9 e3 .i.fS 10 .i.d3 .i.xd3 11 'ii'xd3 ttJbd7 12 ttJge2 'fiIe7 is equal, H.Steiner-Kotov, Venice 1950} 8 e3 ttJe4 9 .i.d3 fS 10 ttJf3 'fiIe7 11 .i.xd6 'fiIxd6 12 0-0 .i.e6 13 ttJeS ttJd7 =Mascarifias-Radulov, Lucerne OL 1982), and then: a) 7 ... .i.xg3 8 hxg3 'ii'e7 9 .i.d3 h6 (9 ... h5!? Zsu.Polgar) 10 ttJf3 ttJbd7 (l0 ... .i.e6!? 11 'fib3 0-0 12 l:.c1 b6 intending ... cS with counterplay) 11 'iVc2 0-0 (1l...ttJg4, FtaCnik-Zsu.Polgar, Pardubice 1994, 12 O-O-O! 0-0 13 ttJh4 ;;I; with an attack - Zsu.Polgar) 120-0-0 (12 l:.h4 c5 13 g4 cxd4 14 ttJxd4 ttJeS IS gS ttJfg4 =) 12...:e8 (12 ... ttJb6!?) 13 l:.h4 ttJb6 14 ~bl .i.e6 =. b) 7 ... i.fS and now: bI) 8 .i.d3 .i.xd3 9 'iVxd3 0-0 10 ttJge2 (10 ttJf3 'ii'e7 11 0-0 .i.xg3 12 hxg3 ttJbd7 13 'ii'f5 l:.fe8 gives Black a slight advantage, Corral Blanco-Placer, Oviedo rpd 1992) 1O... l:.e8 11 0-0 a5 12 a3 'fie7 13 .i.xd6 'iVxd6 14 ttJg3 ttJbd7 = Kantsler-Zso.Polgar, Tel-Aviv 1996. b2) 8 ttJge2 i.e7 (8 ...ttJe4 9 ttJxe4 i.xe4 10 ttJc3 i.g6 11 .i.xd6 'ii'xd6 12 i.d3 ttJd7 130-00-0 = Jacobs-Thesing, Soro 1982) 9 i.f4 (9 ttJcl ttJbd7 10 i.e2 'ii'b6 11 'ii'b3 ttJe4 12 ttJxe4 i.xe4 13 0-0 0-0 = Bonsch-Malich, Halle 1982) 9... 'ii'b6 10 'ii'd2 ttJe4 11 ttJxe4 i.xe4 12 ttJc3 i.f5 13 ..te2 ttJd7 14 0-0 0-0 15 i.d3 i.xd3 16 'ii'xd3 as 112-112 Serper-Janjgava, Novosibirsk 1989. b3) 8 'ii'b3 .i.xg3 9 hxg3 (9 'ii'xb7 i.xf2+ 10 ~xf2 ttJg4+ with an initiative) 9 ... 'iVe7 10 ttJf3 O-O!? (l0 ...h6 11 .i.e2 0-0 12 ttJeS .l:.e8 13 g4 i.c8 {13 ... i.h7 14 g5 hxgS 150-0-0 with an

WHITE A VOIDS THE CAMBRIDGE SPRINGS: MINOR LINES

initiative} 14 g5! hxg5 15 0-0-0 with compensation and an initiative, M.lvanov-Rodin, Krasnodar 1996) 11 liJh4 (11 .i.e2 :e8 12 :el as with counterplay) 11....i.e6 12 'it'c2 :e8 13 .i.d3 liJbd7 14liJf5 .i.xf5 15 .i.xf5 h6 =. 5•••.i.e7 6.i.f4 6 .i.g5 c6 and now: 7 e3 - 4 cxd5 exd5 5 .i.g5 c6 6 e3 .i.e7 7liJj3; 7 'it'c2 - 4 cxd5 exd5 5 .i.g5 c6 6 'ii'c2 .i.e7 7 liJj3. 6•••c6 (D)

175

S•••.i.xd3 9 'it'xd3liJbd7 10 h3 Or 10 0-0 liJh5, and then: a) 11 .i.g3liJxg3 (11...0-0 12 :tabl as 13 'it'c2liJxg3 14 hxg3 .i.d6 15 a3 'it'e716e4dxe417liJxe4liJf618:fel liJxe4 19 l'lxe4 112-112 Werner-Kishnev, Budapest 1991) 12 bxg3 0-0 =BeckerNyberg, COIT. 1980. b) 11 ..te5 0-0 (11...f6 12 .i.g3ltJxg3 13 hxg3 0-0 14 a3 as = MiljkovicKharitonov, Litohoto 1999) 12 :abl (12 'it'f5 g6 13 'it'h3 'it'c8 = DrillatCosma, Chambery 1998) 12 ... liJxe5 (12 ... liJhf6 13 b4 a6 14 h3 :e8 15 a4 .i.f8 16 .i.xf6 liJxf6 17 liJd2 .i.d6 18 :b3 'it'e7 19 b5 axb5 20 axb5 liJe4 112_112 Forintos-Lengyel, Hungarian Ch 1986) 13 liJxe5 .i.d6 14 f4 liJf6 ao T.Georgadze-Spassky, USSR tt 1979. 10•••0-0110-0 Other moves: a) 11 g4 :te8 12 liJh4 liJe4 13 liJf5 liJxc3 14 bxc3liJb6 150-0 liJc4 112-112 Lenchner-Butze, COIT. 1979. b) 11 0-0-0 :e8 (11...b5 12 liJe5 liJxe5 13 dxe5 liJd7 Kaspersen-Serensen, Copenhagen 1988) 12 ~bl a5 13 liJe5 a4 14 f3 'it'a5 15 g4liJxe5 16 ..txe5liJd7 Karolyi-Lukacs, Hungarian Ch 1986. 11•••:eS 12 .:tabl Alternatively: a) 12 :aelliJf8 13liJe5 'it'a5 14 f3 :ad8 15 ~hlliJe6 gives Black a slight advantage, Zagoriansky-Makogonov, Sverdlovsk 1943. b) 12 l:I.ael .i.b4 13 liJe5 .i.xc3 14 bxc3liJxe5 15 .i.xe5liJd716 .i.h2liJb6 17 f3 f5 18 :tcel 'it'd7 19 :e2 112_112 Toran-L.Schmid, Oberhausen Echt 1961. c) 12 liJe5 liJxe5 13 .i.xe5 .i.d6 14 ..txd6 'it'xd6 15 l:I.abl a5 16 :felliJe4

+

Now: B51: 7 e3 B52: 7 'it'c2

+

175 176

BSl} 7 e3 .i.f5 S .i.d3 Or: a) 8 h3 liJbd7 9 g4 .i.e6 10 'it'c2 liJf8 11 0-0-0 liJg6 12 ..th2 liJe4 13 ..td3 liJxc3 14 'it'xc3 ..td6 = Shamkovich-Ageichenko, USSR 1971. b) 8liJe5 'it'b6! 9 ..td3 'it'xb2 10 0-0 ..te6! ao I.Sokolov-Lobron, Amsterdam 1988. c) 8 .i.e2 0-0 9 liJe5 liJbd7 10 0-0 (10 g4 ..te6!) 1O... liJxe5 11 .i.xe5 .i.d6 12 'iVb3 l:I.b8 = Botvinnik-Padevsky, Moscow OL 1956.

+

176

THE CAMBRIDGE SPRINGS

17 lLlxe4 lIxe4 112-112 Bobotsov-Spassky, Sochi 1966. ~ 12:tfullLlfflI3l1~I~14~

a4 15 'it'c2 'it'a5 = Scavo-Komnenic, Catania 1995. 12...aS13 a3 Or: a) 13 lIfel lLle4 14 lLld2 .i.b4 15 :te2 lLldf6 16 f3 112-112 B.PedersenWillumsen, Arhus 1989. b) 13 'it'c2 lLlb6 (13 ... h6 14 .i.h2 i.f8 112-112 Alvarez-Perez, Cuban Ch 1995; 13 ... i.f8 14lLld2 lIe6 15 a3, Lutikov-Filip, Moscow 1959, 15 ... lLlb6!? =) 14 lIfel lLlc4 15 lLle5 lLlxe5 16 i.xe5lLld7 = 17 .i.g3lLlb6 18lLlb5 lIc8 19lLla7 :ta8 20 lLlb5 :tc8 21lLla7 lIa8 22lLlb5 112-112 Reiss-Weglarz, Budapest 2000. c) 13 lIfel .i.f8 14 a3 (14 lLle5 lLlxe5 15 .i.xe5 lLld7 16 i.g3 lIe6 17 lLle2 lLlb6 18 'it'dl lIe8 = DittmarLukacs, Gyula 1997; 14 'iWc2 lLlb6 15 lLld2 lIe6 16 lLla4lLlxa4 17 'iWxa4lLle4 18lLlxe4 lIxe4 =Grunberg-R0dgaard, Hamburg 1983) 14 ... a415 'it'c2 'iWa5 16 lIel (Riazantsev-Kharitonov, Moscow 1999) 16... lLle4!? 17 lLlxe4 dxe4 18 lLld2 'it'd5 19 :tedllLlf6 =. 13..•a4 14 'it'c2 'it'aS 14... b5 15 lIfdl 'iWb6 16 lLle2 lIac8 17 lLlel c5 18 dxc5 lLlxc5 = Georgadze-Lemer, USSR 1979. IS :fdl 15 l::tbd 1 l::tec8 16lLle5 lLlb6 17 'it'd2 i.d6 = Peters-Echtemach, Hamburg 1989. IS•••.i.fS 16lLleS Larsen-Spassky, Montrea11979. According to Larsen Black can equalize after 16 ... 'iWa6!.

852) 7 'iWc2 g6 S e3 8 h3 i.f5 9 'it'el 0-0 10 e3 lLle4 11 i.e2 i.d6 12 i.xd6 'it'xd6 = Botvinnik-Stalliberg, Budapest 1952. S••.i.fS 9 .i.d3 i.xd3 10 'iWxd3lLlbd7 11 h3 No better is 11 0-00-0 12 l::tabl (or 12 a3 a5 13 lIabl a4 14 'it'c2 'it'a5 112-112 Seirawan-T.Georgadze, Hastings 1979/80) 12 ... a5 13 'it'c2 (13 h3 lLlb6 14 i.h6 lIe8 15 lLle5 i.d6 16 f4 lLle4 17lLlxe4 dxe4 18 'it'b3 'it'c7 19 a3 a4 112_112 Sega-Hemandez Penna, Siio Paulo 1997) 13 ... lIe8 14 a3 (14 :bdl i.f8 15 h3 'it'b6 16 <;i;>hl :ac8 17 i.h2 i.g7 = Geller-Ilivitsky, USSR 1955) 14 ... lLlb6 15 lLld2 lLlh5 16 .i.e5 lLld7 = BenkoIvkov, Amsterdam IZ 1964. 11 ...0-0 12 0-0 l::teS 12 ... lLlh5 13 i.h6 :e8 14 %:tabl as 15 e4 (15 lIfel f5 = Keres-Fischer, Cura~ao Ct 1962) 15 ... dxe4 16 lLlxe4 lLldf6 17 lLlc3 lLld5 18 %:tfel lLlhf4 = Meduna-Modr, Prague 1983. 13 lIabl 13 :tfel .i.f8 14 .i.g5 i.e7 15 .i.xf6 lLlxf6 16 :tabl a5 17 lLld2 112_112 NeiLengyel, Tallinn 1975. 13...aS 14 'it'c2 14 lIfel i.f8 15 i.g5 'iWe7 16 'it'dl h6 17 i.h4 'it'e6 =Zo.Varga-Hort, Debrecen Echt 1992. 14•••.i.fS 14... lLlb615lLle5lLlfd7 16lLld3 .i.f8 17 l::tfel f5 18 f3 'it'f6 19 'it'f2 i.d6 = Illescas-Goldin, Oviedo rpd 1993. IS a3 lLlb6 16 lLleS lLlfd7 17 lLld3 lLlc4 The position is level (ECO), Smysloy-Geller, USSR 1955.

11 Queen's Gambit: Exchange Variation with iLg5 1 d4 d5 2 c4 e6 3 lLlc3 lLlf6 4 cxd5 exd5 5 .ig5 c6 This is the main line of the Exchange Queen's Gambit. This is of course a vast subject, so our coverage is necessarily abbreviated, and we have concentrated purely on providing Black with the minimum theoretical knowledge to negotiate this system successfully in practice. Now: A: 6li'c2 177 B: 6e3 180

Or 8 .ixf6 .ixf6 9 e3 .ifS 10 .id3 .ixd3 11 li'xd3 lLld7 12 0-0 (12 b4!?) 12 ... .ie7 13 .:tabl as 14 a3 0-0 ISli'c2 (IS b4 axb4 16 axb4 l:.a3 with counterplay) IS ... .id6 16 b4 axb4 17 axb4 lLlb6 (intending ... lLlc4) 18 bS (18lLld2 'ikc7 19 g3 l:.a3 20 l:.b3 =) 18 ... lLlc4 19 l:.al (19 bxc6 lLla3 20 li'd3 lLlxbl 21 cxb7 l:.a3 22 l:.xbl .as 23 l:.el l:.b8! + Yusupov & Dvoretsky) 19....c7 20 bxc6 (20 g3!?) 20 ....xc6 (Inkiov-Yusupov, Dubai OL 1986) 21 'iib3 l:.fc8 22 :lxa8 l:.xa8 23 lLlbS = Yusupov & Dvoretsky.

A)

6li'c2 .ie7 7 lLlf3 7 e3 - 6 e3 .ie7 7.c2. 7•.•g6 (D)

Now: AI: 8 e4 A2: 8 e3

177 178

AI) 8 e4 dxe4 9 .ixf6 .ixf6 10 'ifxe4+

'ifi>f8 10... 'iWe7 11 .ic4 0-0 is also good: a) 12 'iixe7 .ixe7 13 0-0 .ifS 14 l:.fel .if6 IS h3 (1S lLleS lLld7 16 lLlxd7.ixd7 17lLle4 ~g7 18 dS 112-112 Magnusson-Mednis, Gausdal1990; IS lLle4.ixe4 16 l:.xe4lLld7 =) IS ... hS 16 lLleSlLld7 17lLle4 .ixeS 18 dxeSlLlxeS ! 19 lLlf6+ rJ;g7 20 lLlxhS+ gxhS 21 l:.xeS ~f6 22 l:.ael :lad8 =MurshedSerper, Dhaka 1995. b) 120-0 and then: bl) 12 ....ifS 13 .f4 'iib4 14 lLleS (14 .ib3 - 12....b4 13 .ib3 .if5 14 "/4) 14 ... .ixeS IS dxeS .ie6 16lLle4 'iixc4 17 l:.ael 'iibs 18 a4 'iiaS 19 lLlf6+ rJ;;g7 20 lLlhS+ gxhS 21 'ii'gS+

178

THE CAMBRIDGE SPRINGS

~h8

22 'iWf6+ 112-112 Gulko-Yusupov, Munich 1990. b2) 12 ...1i'h4 13 .i.b3 .i.f5 14 ii'f4 ttJd7 15 l:tfel a5 and then: b21) 16 ttJe4 (Lin Ta-Tan Chengxuan, China 1989) 16... a4 17 ttJe5 (17 d5 ~g7!) 17 ... .i.xe5 18 dxe5 ~g7 19 g4 .i.e6 20 .i.xe6 fxe6 21 ii'g3 00 Lin Ta. b22) 16 g4 .i.e6 17 .i.xe6 fxe6 18 ii'e3 00 Ruban-Dreev, Tbilisi jr 1989. 11 .i.c4 ~g7 12 0-0 120-0-0 l:te8 13 ..-f4.i.e6 14 .i.xe6 l:txe6 15 h4 ii'd6 16 'iVd2 ttJd7 17 h5 (17 g4 l:tae8 18 ttJg5 l:t6e7 =+= KekkiPihlajasalo, Helsinki 1997) 17 ... ttJfS 00

22 ... ~g7 23 g4 (Rogozenko-Marciano, Bucharest 1993) 23 ... l:te8!? 24 l:t4e3 l:.d8 25 ttJf3 h6 26 h4 l:tcd7 =. 23 b4 ~g7 24 g4 l:te7 25 ttJc4 l:txe4 26l:txe4 The position is equal, Lastin-Korneev, Russian Ch 1996. A2) S e3 ~f5 9 .i.d3 .i.xd3 10 ii'xd3 ttJbd7 (D)

all. 12•••l:te813 'iWf4 .i.e614 .i.xe6 l:txe6 15 l:tfel 15 l:.adl ii'd6 16 'iWc1 ttJd7 17 d5 l:.ee8 18 dxc6 ii'xc6 19 ttJd4 .i.xd4 20 l:txd4 ttJf6 21 'iVd2 l:te6 22 h3 l:tae8 with equality, A.Sokolov-Belikov, Jurmala 1991. 15•••'iVd6! 16 'ii'xd6 16 'iWg4 l:.xel+ 17 l:txel ttJd7 18 ttJe4 ii'd5 19 ttJc3 ii'd6 20 ttJe4 ii'd5 21 ttJc3 112-112 Volke-Schandorff, Copenhagen 1996. 16•••l:txd617 ttJe4 17 l:.e8 l:td8 18 l:txd8 .i.xd8 19 l:tel ttJd7 20 g4 h6 21 ~g2 ~f8 22 l:te2 ttJf6 23 h3 .i.b6 =Beim-Komeev, Frankfurt 1997. 17...l:tdSI8 ttJxf6 ~xf619:e4 19 g4 h6 20 h4 ttJd7 21 g5+ hxg5 22 hxg5+ ~g7 23 :e7 ~f8 24 l:tael :ab8 25 ~g2 ttJb6 26 ~g3 ttJd5 27 l:t7e4 ~g7 =+= Lautier-Oll, Moscow 1989. 19...ttJa6 20 l:tael l:.d7 21 ttJe5 21 a3 :ad8 22 ~f1 112-112 DreevLutz, Nussloch 1996. 21...l:tc7 22 a3 :dS

11 0-0 Other moves: a) 11 h4 0-012 .i.h6 l:.e8 13 h5 ttJe4 14 hxg6 hxg6 15 ~f1 .i.fS 16 .i.xfS ~xfS 17 g3 ~g7 18 ~g2 ii'e7 19 l:th4 l:th8 20 l:tabl l:.xh4 21 :xh4 l:th8 22 l:txh8 ~xh8 23 ttJd2 ttJdf6 24 ttJdxe4 ttJxe4 25 ttJxe4 dxe4 112-112 SpasskyPetrosian, USSR Ch 1959. b) 11 l:tbl a5 12 ~h6 .i.f8! 13 ~xf8 ~xf8 14 0-0 ~g7 15 'iWc2 (15 a3 a4!) 15 ... ii'e7 16 a3 l:thc8 17 l:tfcl ttJe8! 18 b4 ttJd6 19 ii'b3 ttJc4! (intending to play 20 ... axb4 21 axb4 l:ta3) 20 a4! axb4 21 ii'xb4 ii'xb4 22 :xb4 b6 = Andersson-Farago, Dortmund 1978. c) 11 ~h6 .i.f8! 12 iLxf8 (12 iLg5 iLe7 13 iLh6 .i.f8 14 iLg5 112-112 Donaldson-Tisdall, Gausdall986; 12 .i.f4

QUEEN'S GAMBIT: EXCHANGE VARIATION WITH

i.e7 13 h3 0-0 14 0-0 l:.e8 15 l:.abl i.fS 16 'it'c2 .!Db6 17 .!De5 .!Dfd7 18 ':'bdl .!Dxe5 19 i.xe5 i.d6 20 i.xd6 1/2-1f2 Bonsch-Zsu.Polgar, Brno 1991) 12 .. .'~xf8 13 b4 (13 lDe5 cJ;g7 14 f4 ':'c8 15 0-0 1/2- 112 Tomaszewski-SpasSOY, Polanica Zdroj 1987) 13 ... 'ifi'g7 14 0-0 'it'e7 15 'ii'c2!? l:.he8 16 b5 cxb5 17 'ili'b3 'it'e6! 18 'ii'xb5 l:.ec8 19 .!De2 l:.c7 20 :ael l:.ac8 21 h3 'it'b6 with a balanced position, Rogers-M.Gurevich, Biel IZ 1993. d) 11 h3 0-0120-0 l:.e8 13 i.f4 i.f8 14 ':'abl (14 .!Dd2 'it'e7 15 a3 a5 16 l:.ael 'iVe6 = Vyzhmanavin-Kaidanov, Moscow 1988; 14lbe5 .!Dxe5 15 i.xe5 .!Dd7 16 i.h2 .!Df6 17 i.e5 .!Dd7 18 i.h2 .!Df6 19 l:.abl i.d6 20 i.xd6 'ii'xd6 21 l:.fel 1/2- 1/2 Chernin-Vyzhmanavin, Moscow 1988) 14... .!De4 15 .!De5 .!Dxe5 16 i.xe5 i.d6 17 i.xd6 .!Dxd6 18 lDa4 'it'g5 19 .:tfel l:.e7 20 .!Dc5 l:.ae8 21 'it'dl h5 22 a4 .!Df5 23 l:.c2 .!Dh4 24 'it'fl 'it'f5 25 'it'd3 1/2- 1/2 Korchnoi-Ivkov, Belgrade 1956. 11 •••0-0 (D)

12.:tabl No better is 12 lDd2 l:.e8 13 l:.ael (or 13 ltabl .!De4 14 i.xe7 'it'xe7 15 b4 a6 16 .!Da4 b5 17 .!Dc5 lDdxc5 18

iLg5

179

bxc5 .!Dxd2 19 'ii'xd2 a5 with an equal position, Padevsky-Antoshin, Moscow 1963; 13 l:.ac1 'ifi'g7 14 .!Db3 i.d615 h3 h6 16 i.h4 g5 17 i.g3 i.xg3 18 fxg3 l:.e6 =Taimanov-Korchnoi, USSR Ch 1962; 13 l:.fel .!De4 14 i.xe7 'it'xe7 15 l:.ac1 f5 16 .!Dfl .!Ddf6 is level, FilipDonner, Amsterdam 1965; 13 i.xf6 .!Dxf6 14 l:.ab 1 a5 15 l:.fc 1 i.d6 16 .!Dfl lDh5 1/2- 112 Marovic-Kurajica, Banja Luka 1976) 13 ... .!De4 14 i.xe7 'ii'xe7 15 .!Dcxe4 dxe4 16 'it'b3 l:.ab8 17 f3 exf3 18 gxf3 .!Db6 19 f4 l:.bd8 20 .!Df3 c5 =Ftacnik-Lukacs, Baile Herculane Z 1982. 12•••a5 13 'iic2 Alternatives: a) 13 l:.fdl l:.e8 14 'iic2 (14 h3.!De4 15 i.f4 i.d6 16 i.xd6 .!Dxd6 is equal, Malesevic-Nordstrom, Malmo 1999) 14 ... .!De4 15 i.xe7 'iixe7 16 .!Dd2 .!Dd6 17 .!Da4 .!Df6 =Komljenovic-Kramnik, Oviedo rpd 1992. b) 13 a3 l:.e8 and here: bl) 14 'iic2 -13 'ii'c2 l:.e8 14 a3. b2) 14 h3 .!De4 15 i.xe7 'iixe7 16 'it'c2 .!Dd6 17 .!Dd2 .!Db6 = KiselevBareev, Togliatti 1985. b3) 14 i.xf6lDxf6 15 .!De5 i.d6 16 f4 'iie7 17 l:.bel 'ifi'g7 18 'iidl l:.ad8 19 'it'f3 .!De4 20 .!Dxe4 dxe4 21 'it'h3 f6 22 .!Dc4 i.c7 23 l:.c1 l:.d5 1/2- 1/2 Kalinichev-Potkin, Pardubice 2001. b4) 14 b4 axb4 15 axb4 .!De4 16 i.xe7 'it'xe7 17 .!Dd2 (Desportes-Kramnik, Paris simuI2000) 17 ... .!Dxd2!? 18 'it'xd2 b5 19 .!Dd 1 .!Db6 20 .!Db2 l:.a2 21 'it'c3 .!Dc4 =. b5) 14 l:.fc1 .!De4 15 i.f4 .tf8 (or 15 ... i.d6 112_1/2 Chemin-Epishin, Reggio Emilia 1995/6) 16 .!Dd2 .!Dxd2 17 'it'xd2 .!Db6 1/Z-1f2 Miladinovic-Janjgava, Panormo Z 1998.

180

THE CAMBRIDGE SPRINGS

e) 13 h3 :e8 14 i.f4 tbb6 15 lIfel (15 i.h2 i.d6 16 i.xd6'ii'xd6 17 tbe5, Van de Mortel-Brenninkrneijer, Wijk aan Zee 1995, 17 ... tbbd7!? 18 tbxd7 tbxd7 19 l:tfc1 tbb6 20 b3 l:te7 =) 15 ... i.f8 16 tbd2 tbc8 17 :bc1 tbh5 18 i.h2 i.d6 19 e4 i.xh2+ 20 cJ;>xh2 dxe4 21 tbdxe4 tbd6 22 g3 tbf6 1/2- 1/2 Bisguier-Bialas, Leipzig OL 1960. f) 13 :fcl :e8 14 i.xf6 (14 i.f4 tbh5 15 tbxdS cxd5 16 i.c7 'ii'c8 17 i.g3'ii'd8 18 i.c7 1/2_ 1/2 Drogoon-Korneev, Minsk 1995; 14 :c2 i.d6 15 i.h4 'fie7 16 l:tel 'ii'e6 = Dudukin-Goloshchapov, Russia Cup 1999) 14... tbxf6 15'ii'c2 (15 tbe5 i.d6 16 f4 'fie7 1/2- 1/2 Castro-Pares Peris, Palencia 1999; Black has good play) 15 ... i.d6 16 a3 'fie7 17 tba4 tbe4 1/2- 1/2 Baumbach-Heuer, Germany 1994/5. 13...:e8 14 i.xf6 Or: a) 14 i.f4 tbh5 15 i.g3 tbxg3 16 hxg3 i..d6 1/2- 1/2 Cech-Starke, Prague 1990. b) 14 h3 tbe4! 15 i.f4 i.d6 16 tbxe4 i.xf4 17 tbc3 i.d6 18 e4 dxe4 19 tbxe4 tbf6 = Barlov-Vera, Dubai OL 1986. c) 14 :fcl rJ;g7 (14 ...tbb6 15 tbe5 tbfd7 16 i.xe7'ii'xe7 17 tbd3 tbc4 18 :el tbd6 = Spassky-Hort, w.German Cup 1989) 15 a3 tbb6 16 tbe5 tbfd7 17 i..xe7 'fixe7 18 tbxd7 'ii'xd7 =DargaPortisch, Sarajevo 1962. d) 14 a3 tbe4 15 i.xe7 'ii'xe7 and here: dl) 16 tbxe4 dxe4 17 tbd2 c5 18 dxc5 (18 tbb3 cxd4 19 tbxd4 tbc5 is equal, Vucic-Kaidanov, Belgrade 1988) 18 ... tbxc5 19 :bdl :ac8 20 tbb3 tbd3 21 'ii'bl 'ii'g5 22 tbc1 tbxc1 1/2- 1/2 Bukal-Barbero, Budapest 1987.

d2) 16 b4 axb4 17 axb4 (Lev-Flear, London Lloyds Bank 1987) 17 ...tbb6 18 b5 c5 with counterplay. 14•••i.xf6 The alternative 14... tbxf6 15 a3 i.d6 also leads to equality, Benko-Bilek, Stockholm IZ 1962. 15 a3 tbb6 The position is equal (ECO) , Szilagyi-Suetin, Albena 1970. B)

6 e3 i.e7 (D) 6 ... tbbd7 gives us the following transpositions: a) 7 'iic2 i.e7 8 i..d3 - 6... i.e7 7 i.d3 tbbd78 'ii'c2. b) 7 tbf3 - 4 tbf3 tbbd75 cxd5 exd5 6 i.g5 c6 7 e3. c) 7 i.d3 i.e7 - 6... i.e7 7 i.d3 tbbd7.

Now: Bl: 7 tbf3 B2: 7 i.d3

180 182

7 'ii'c2 tbbd7 8 i.d3 - 7 i.d3 tbbd7 8 'ii'c2.

B1) 7 tbf3 i.f5 8 i.d3 i..xd3 9'ii'xd3

QUEEN'S GAMBIT: EXCHANGE VARIATION WITH i.g5

Or 9 iLxf6 iLxf6 10 'ii'xd3 a5 11 0-0 0-0: a) 12 ttJa4 ttJd7 13 'i'c2 iLe7 14 a3 (Bobotsov-Padevsky, Bulgaria 1969) 14... iLd6 15 .:tab1 'i'e7 =Bobotsov. b) 12 .:tfc1 ttJd7 13 ttJa4 iLe7 14 'ii'b3 l:Ia7 15 ttJe1 iLd6 = PachmanPetrosian, Venice 1967. c) 12 .:tac1 ttJd7 13 e4 dxe4 14 ttJxe4 a4 15 b4 axb3 16 'ii'xb3 .:ta7 17 d5 cxd5 18 'ii'xd5 b6 19 .:tfd1 'ii'a8 20 h3 112_112 Ree-Timman, Leeuwarden 1976. d) 12 a3 iLe7 13 .:tfe1 ttJd7 14.:tad1 ttJf6 15 ttJe5 iLd6 16 'ii'f5 .:te8 17 e4 'ii'c8 18 'ii'f4 'ii'e6 =Schneider-Lengyel, Eksjo 1982. 9••• ttJbd7 10 0-0 0-0 11 .:tabl Instead: a) 11 'i'f5 ttJe4 12 iLxe7 'ii'xe7 13 ttJxe4 dxe4 14 ttJd2 ttJf6 15 .:tac1 .:tfe8 16 .:tc5 ttJd5 17 .:tfc 1 .:tad8 = Marshall-Alekhine, New York 1924. b) 11 .:tae 1 .:te8 12 ttJd2 ttJe4 13 i.xe7 'ii'xe7 14 f3 ttJxd2 15 'ii'xd2 ::tad8 16 'i'f2 liz-liz Pinter-Lukacs, Budapest 1981. c) 11 iLxf6 ttJxf6 12 .:tab1 a5 (or 12 ... iLd6 13 b4 a6 14 a4 'ii'e7 15 b5 a5 16 bxc6 bxc6 17 .:tb6 liz-liz FilgueiraSorokin, Buenos Aires 1996) 13 ttJe5 (13 a3 iLd6 14 .:tfe 1 .:te8 15 e4 dxe4 16 ttJxe4 ttJxe4 17 .:txe4 .:txe4 18 'ii'xe4 'ii'e7 = Nemet-Flear, 1991) 13 ...ttJd7 14 ttJxd7 'ii'xd7 15 ttJa4 .:tae8 (15 ... iLd6? is poor in view of 16 ttJb6 iLxh2+ 17 ~h1 'i'd8 18 ttJxa8 'i'h4 19 'ii'f5) 16 ::tfc1 liz-liz Szabo-Tal, Wijk aan Zee 1973.

11 •••8512 a3 Alternatives: a) 12 ttJd2 .:te8 (12 ...ttJe8 13 iLxe7 "fIixe7 IIz-lh Kirov-Knezevic, Prague 1983; 12... ttJh5 13 iLxe7 'ii'xe7 14 a3

181

liz-liz Eperjesi-Prandstetter, Dortmund 1988) 13 .:tbc1 (13 .:tfc1 iLd6 14 ttJn 'ii'e7 15 i.h4 'i'e6 16 iLg3 iLf8 17 ttJe2 ttJe4 18 'iVb3 .:ta7 19 ttJf4 'i'f6 20 ttJd3 IIz-lh Van Wijgerden-Kuijpers, Leeuwarden 1980) 13 ... ttJe4 14 iLxe7 'i'xe7 15 ttJcxe4 dxe4 16 'iVb3 ttJf6 = Nagy-Zara,Orebro 1966. b) 12 l:Ifc1 .:te8 13 'i'c2 (13 a3 ttJe4 14 iLxe7 'ii'xe7 112-1{2 Kirov-Spassov, Sofia 1982) 13 ... ttJe4 (13 ... iLd6 14 tiJe2 'ii'e7 15 i.f4 ttJe4 16 iLxd6 'i'xd6 = Small-Lombardy, Columbus 1977) 14 iLxe7 'ii'xe7 15 ttJxe4 dxe4 112-112 Vladimirov-Cherepkov, Voronezh 1997. c) 12 h3 .:te8 13 'ii'c2 ttJe4 14 iLxe7 'ii'xe7 = Malaniuk-Ermolinsky, Tashkent 1987. d) 12 'ifc2 ttJe4 (12 ... .:te8!? 13 a3 12 a3 .:te8 13 'ii'c2) 13 ttJxe4 dxe4 14 i..xe7 'ii'xe7 15 ttJd2 ttJf6 16 .:tfc1 .:tfd8 17 'iVc5 ~f8 18 'i'xe7+ 112-112 Azmaiparashvili-Khalifman, Las Palmas 1993. 12...ttJe4 12 ... .:te8 13 b4 (13 'i'c2 ttJb6 14 ttJd2 ttJfd7 15 iLxe7 'ii'xe7 16 ttJa4 ttJxa4 17 'ii'xa4 'ii'd6 18 .:tfc1 .:te6 19 'ii'c2 a4 = Ivkov-Zsu.Polgar, Vienna 1993) 13 ... axb4 14 axb4 b5! = LarsenGeller, Linares 1983. 13 iLxe7 13 iLf4 f5 14 h3 iLd6 15 iLxd6 ttJxd6 IIz-I12 Chabanon-Va'isser, French Ch 1997. 13...'iVxe7 14 .:tfet Or: a) 14 b4 b5 15 'ii'c2 (15 .:tfc1 axb4 16 axb4 ttJd6 17 .:tel f5 with good play for Black, Guseinov-Azmaiparashvili, Baku 1983) 15 ... axb416axb4ttJd617 .:tb3 ttJb6 18 ttJe5 .:tfc8 19 ttJd3 ttJbc4 led to a slight advantage for Black in

+

182

THE CAMBRIDGE SPRINGS

the game Nikolic-Kramnik, Monaco Amber blindfold 1998. b) 14 'ii'c2 ttJd6 15 .:thel f5 16 ttJd2 (Kadar-Manole, Romanian Cht 1994) 16... ttJf6 =. 14•••.:tfe8 15 ttJd2 ttJxd2 112-112 Vaiser-Geller, Sochi 1984.

82) 7 1.d3 ttJbd7 8 'ii'c2 0-0 (D)

Now: B21: 9 ttJge2 B22: 9 ttJf3

182 184

821) 9 ttJge2 .:te8 Now: B211: 10 h3 B212: 10 0-0

182 183

Or: a) 10 g4 ttJf8 11 h3 as 120-0-0 b5 (12 ... 'iii'h8 13 .:tdgl b5 14 'iii'bi a4 15 ttJg3 ~a5 16 ttJce2 a3 17 b3 i.d7 18 ttJh5! ttJe4 {18 ... ttJxh5 19 i.xe7 ':'xe7 20 gxh5;!; Chemin} 19 i.xe7 ':'xe7 20 i.xe4! .:txe4 21 ttJeg3 %:te7 {21...':'ee8 22 ttJf5 g6 23 ttJh6 with an attack Chemin} 22 ttJf5 i.xf5 23 gxf5 ± Chemin-Bonsch, Altensteig 1991) 13

~bl -10 h3 ttJj8 11 0-0-0 a5 12 ~b1

b513 g4. b) 100-0-0 ttJf8 11 ~bl (11 ttJg3 h6 12 1.xf6 1.xf6 with good play for Black, Petrosian-Mikenas, USSR Ch 1949) l1...b5 12 ttJcl as 13 1.xf6 1.xf6 14 ttJ3e2 'ii'd6 15 ttJb3 g6 is unclear, Kholmov-Mikenas, USSR Ch 1949.

8211) 10 h3 ttJrs 11 0-0-0 Or 11 g4: a) l1...ttJ6d7 12 1.f4 (or 12 1.xe7 'fixe7 13 0-0-0 ttJb6 14 ttJg3 g6 00 Bareev) 12 ... ttJb6 13 0-0-0 1.e6 14 %:tdgl (14 h4!? Bareev) 14....:tc8 15 g5 c5 16 h4 g6! = 17 h5? (17 dxc5 i.xc5 18 ~bl is equal- Bareev) 17 ... c4! 18 i.xg6 fxg6 19 hxg6 hxg6 20 1.e5 1.f5 -+ Bareev-Lobron, Ljubljana/Rogaska Slatina 1989. b) 11...aS 12 ttJg3 h6 (12 ...b5 13 ttJce2 1.d7 140-0-0 a4 15 ~bl b4 16 'ii'd2 ~b6 17 f4 c5 18 dxc5 1.xc5 19 ttJd4 1.xd4 20 exd4 ttJe4 21 1.xe4 dxe4 22 f5 i.b5 23 1.e3 112-112 I.Sokolov-Wedherg, Haninge 1989) 13 i.xf6 (13 i.f4 ttJe6 14 ttJge2 ttJxf4 15 ttJxf4 i.d6 +Gulko-Panchenko, Minsk 1985) 13 ...1.xf6 14 ttJce2 g6 15 ~f1 ~d6! 16 %:tcl! i.d7 17 'iii'g2 (Salov-Van der Sterren, Hilversum 1993) 17 ... i.h4! + Salov. 11 ..•a5 12 ~bl b5 13 g4 a4 14 ttJg3 ~a515 ttJce2 1.d7 (D) 15 ...b4?! 16 ~xc6 i.d7 17 ~c1 ttJe6 18 i.xf6 i.xf6 19 'ii'd2 g6 (19 ... ttJd8!? intending ... ttJb7-d6 - Vladimirov) 20 h4 i.g7 21 g5 'ii'b6 22 f4! ± (intending f5-f6) Vladirnirov-Van der Sterren, Ostend 1990. 16 ttJf5

QUEEN'S GAMBIT: EXCHANGE VARIATION WITH

Or: a) 16 ttJh5 ttJxh5 17 i..xe7 l:.xe7 18 gxh5 b4 19 'ii'd2 ttJe6 20 h6 g6 =+= De Boer-Muller, Groningen 1991. b) 16 i..f5 b4! <Xl Arencibia-Nagl, Eger 1989. c) 16 i..f4 b4 17 'ii'd2 ttJe6 18 ttJf5 iLf8 19 iLe5 ttJe4 20 i..xe4 dxe4 21 ttJd6 (Day-Findlay, Toronto 1989) and now 21...i..xd6! =. 16•••i..xf5 17 i.xf5 After 17 gxf5 l:.ac8 18 l:.hgl, Inkiov gives 18 .. .'~h8 19 i..xf6 i.xf6 20 ttJf4 ttJd7 21 .l:.c1 a3 22 b3 c5!? 23 ttJxd5 c4! 24 bxc4 bxc4 25 i..xc4 ttJb6 26 ttJxb6 'iVxb6+ 27 'ii'b3 'ii'a7 with compensation, but 18 ...ttJ8d7, preparing ... c5 and freeing the f8-square for the bishop, is much simpler and gives Black good play. 17•••l:.a618 h4 Or 18 i..d3 (Ward-Olesen, Hillered 1995) 18 ... ttJe4! with counterplay. 18••• b4 19 'ii'd3 Kostic-Paramentic, Vmjacka Banja 1996. Black can now play 19... c5! with chances for both sides in a complicated position.

8212) 100-0 ttJrs

i,.g5

183

11 f3 Instead: a) 11 ':!'ael ttJg6 12 ttJg3 i..d7 13 f3 l:.c8! (intending ... c5) 14 ttJf5 i.xf5 15 i..xf5 l:.c7 = I.Sokolov-Vaganian, Sarajevo 1987. b) 11 a3 ttJh5 12 i..xe7 'ii'xe7 13 b4 and now: bl) 13 ... a6 14 ttJa4 g6 (14 ... i..g4 15 ttJec3 ttJg6 16 l:.ael l:.ad8 17 f3 i..c8 = Wallace-Asrian, Erevan OL 1996) 15 ttJc5 ttJg7 16 a4 i.f5 17 b5 axb5 18 axb5 ttJfe6 19 ttJxe6 i..xd3 20 'irxd3 ttJxe6 =Gulko-Spassky, Cannes 1987. b2) 13 ...'ii'g5 14 l:.ael i..h3 15 ttJg3 ttJxg3 16 hxg3 i..d7 17 e4 dxe4 18 ttJxe4 'ii'e7 19 ttJc5!? (19 'irc3 i..e6 20 ttJc5 'ii'c7 21 i..e4 l:.ad8 22 l:.e3 l:.d6 is equal, Olafsson-Baburin, Las Vegas 1997) 19 ... 'ii'xel (19 ... i.e6!?) 20 l:.xel l:.xel+ 21 ~h2 l:.ae8 22 ttJxb7 l:.al! (not 22 ... i.g4?! 23 ttJc5 {23 i..c4!?} 23 ... ttJe6 24 ttJb3 ttJg5 25 'irxc6ltle6 26 'ii'c3! ± Baburin) 23 ttJc5 l:.eel 24 g4 i..xg4 <Xl Baburin. c) 11 l:.abl ttJg4 and then: c1) 12 i..f4 i.d6 13 b4 i..xf4 14 ttJxf4 'ii'd6! (14 ... g5? 15 ttJh5 ~d6 16 ttJg3 'ii'h6 17 h3 ttJf6 18 ttJf5 ± Hodgson-Murugan, British Ch 1993) 15 h3 (15 i.f5!? Murugan) 15 ... g5 16 hxg4 gxf4 17 'ii'e2 'irh6 <Xl Murugan. c2) 12 i..xe7 ~xe7 13 h3 (13 b4 'ii'd6 14 ttJg3 h5 with an attack - Murugan) 13 ... ttJf6 and then: c21) 14 ttJf4 ttJg6 15 ttJce2 ttJh4 16 g3 ttJf3+ 17 ~g2 ttJg5 18 h4 ttJge4 19 ':!'bel ttJd6 20ttJc3 h6! 21 l:lhl (21 h5!? Chemin) 2l...g5 22 hxg5 hxg5 23 ttJh3 i.xh3+! 24 .:!.xh3 rj;;g7 = Chemin-Inkiov, Saint John 1988. c22) 14 b4 ttJe6 15 b5 c5 16 dxc5 ttJxc5 17 l:.bc1 b6 18 %lfdl i.b7 19

184

THE CAMBRIDGE SPRINGS

liJf4 'iVe5 liz-liz Idema-Piccon, COIT. 1995. d) 11 .l:.adlliJh5 12 i..xe7 'iVxe7 13 .l:.fel (alternatively, 13 .l:.bl a5 14liJa4 i..g4 15 'it'c5 i..xe2 16 'iVxe7 .l:.xe7 17 i..xe2 liJf4 18 i..g4 liJ4e6 19 lIfel g6 20 i..xe6 liz-liz Guliev-Smagin, Moscow 1995) 13 ... i..g4 14 h3 i..xe2 15 'it'xe2 liJf6 16 f3 liJe6 17 'iVf2 c5 18 i..c2 (18 dxc5, Milov-Bagirov, Biel 1999, 18 ... liJxc5 19 i.bl lIad8 20 a3 =) 18 ... a6 19 dxc5 'iVxc5 20 i.b3 lIad8 = Tukmakov-Lputian, Sochi 1987. 1l••• liJb5 12 i.xe7 .l:.xe7! 13 'iVd2 13 e4 dxe4 14 fxe4 liJe6 15 d5 liJc5 16.l:.adl 'ii'b617~hl i.g418i..c4.l:.f8 (better is 18 ... .l:.ae8 or 18 ... liJf6 with a complicated position with chances for both sides) 19 .l:.d4 :e5 20 'iVd2 i.xe2 21 i.xe2 liJf6 22 i.f3 (22 .l:.xf6! gxf6 23 b4liJa6 24liJa4 'iVc7 25 d6 'iVb8 26 i..xa6 bxa6 27 liJc5 gives White more than enough compensation for the exchange) 22 ... lIfe8 23 d6 liJe6 24 .l:.d3 .l:.d8 25 .l:.dl h6 26 b3liJc5 27 .l:.d4liJe6 28 .l:.d3liJc5 29 lId4liJe6 liz-liz I.Sokoloy-Van der SteITen, Dutch Ch 1995. 13••.f5 14 e4 fxe4 15 fxe4 dxe4 16 liJxe4 16 i.xe4 i..e6!? 17 'it'g5 g6 18 'iVh6 00 Baburin. 16••. i..e6!? 17 'iVg5 i..d5! 18liJ4c3 .l:.xe2 19 .l:.xf8+ 'iio>xf8 20 .l:.n + 'iio>g8 21 'iVxd8+ .l:.xd8 22 i..xe2 liJf6 23 liJxd5 liJxd5 24 i..c4 lIe8 25 lIf5 .l:.d8 26 r.t>f2 liz-liz Castellano-Tosi, COIT. 1999.

822) 9liJf3 (D) 9....l:.e8100-0 Other moves: a) 10 h3 liJf8 and then: al) 11 0-0 -10 0-0 liJj8 11 h3.

B

a2) 11 g4 liJe4! 12 i.xe7 'iVxe7 13 .l:.glliJxc3 14 'iVxc3liJe6 150-0-0 liJg5 =Lombardy-Drimer, Leipzig OL 1960. a3) 11 i..f4 i..d6 12 i..xd6 'iVxd6 and here: a31) 13 0-0'iVe714.l:.ablliJe415 b4 i.f5 16 .l:.b3 (16 liJa4, Spraggeu-Beliavsky, Montpellier Ct 1985, 16 ... lIac8 =Beliavsky) and now: a311) 16... .l:.ac8!? 17 b5 c5 18 dxc5 lIxc5!? (18 ... 'iVxc5 19 liJd4 i..g6 20 liJxe4 dxe4 00 Rajkovic) 19 'it'b2 liJe6 20 liJa4 .l:.cc8 21 .l:.dl i.g6 00 • a312) 16... a6 17 a4liJxc3!? (the alternative is 17 ... .l:.ad8 18 b5 axb5 19 axb5 c5 20 dxc5 'it'xc5 21liJd4 i..g6 22 liJxe4 'iVxc2, Tunik-Shabanov, Krasnodar 1991, 23liJf6+!?;t) 18 'ir'xc3 i.e4 19 i..xe4 dxe4 20 liJe5 .l:.ad8 =. a32) 13 O-O-O!? i..e6 and here: a321) 14 g4 'iVe7 15 'iio>bl .l:.ac8!? (15 ... liJe4 16 i.xe4 dxe4, Dautov-Sargissian, Ohrid Ech 2001, 17 'iVxe4!? i.xa2+ 18 'iio>xa2 'ir'xe4 19 liJxe4 .l:.xe4 20 d5 ;t) 16 g5 liJ6d7 17 'ii'b3 liJb6 18 .l:.cl c5 with counterplay. a322) 14 ~bl .l:.ac8 15 g4 c5 16 dxc5 .l:.xc5!? (16 ... 'ir'xc5 17 liJd4 a6 liz-liz Gavrikov-Barbero, San Bernardino 1991; according to Janjgava White has the better chances) 17liJd4 .l:.ec8 =.

QUEEN'S GAMBIT: EXCHANGE VARIATION WITH

b) 10 0-0-0 lOf8 and here: b1) 11 ~b1 i.e6 12 h4 llc8 (or 12 .. :ii'aS 13 i.xf6 i.xf6 14 lOgS g6 IS ~e2 cS 16 'ii'f3 i.g7 17 hS cxd4 18 exd4 llac8 19 lOe2 ~d8 20 ~g3 ~f6 21 hxg6 hxg6 00 Dydyshko-Faibisovich, Minsk 1971) 13 i.f4 (13 lOeS, Trtanj-Dengler, Pula 1999, 13 ... cS! with an initiative) 13 ... cS 14 iLeS lOg4 IS iLbS iLd7 16 iLxd7 ~xd7 =. b2) 11 i.xf6 iLxf6 12 h3 i.e6 13 ~b1 l:.c8 14 g4 (Korchnoi-Yusupov, Dortmund 1994) 14... cS! IS dxcS llxcs 16 lOd4 a6 17 f4 i.c8 18 gS iLxd4 19 exd4 :tc6 00 Brinck-Claussen - Redgaard, Esbjerg 1982. b3) 11 h3 i.e6 and here: b31) 12 ~b1 lO6d7 (12 ... 'ii'aS 13 g4 - 12 g4 'iVaS 13 ~bl) 13 i.xe7 (13 ii.f4 :tc8 14 l:tc1 cS IS dxcS lOxcS is equal, Spielmann-Xu Hanbing, Budapest 2001) 13 .. :iixe7 14 g4 l:.ac8 IS :tel a6 16 gS cS 17 dxcS lOxcS 18 h4 bS 19 ~d2 lOe4!? 20 i.xe4 dxe4 21 lOd4 iLc4 22 ~a1 (Lobron-M.Gurevich, Munich 1992) 22 ... b4!? 23 lOa4 iLbS gives Black counterplay in an unclear position - M.Gurevich. b32) 12 g4 'iWaS 13 ~bl and now: b321) 13 ... lOe4 14 iLxe4 (14 i.xe7 lOxc3+ IS 'iWxc3 'iWxc3 16 bxc3 llxe7 = Janjgava) 14... dxe4 IS i.xe7 %:txe7 16 lOd2 l:.ae8 17 lOdxe4 (17 'iWa4 'iWxa4 18 lOxa4 i.dS 19 lOn h6 20 lOg3 g6 21 lOc3 rJ;g7 22 :tel:td8 is equal, Baumbach-Csom, Kapfenberg Echt 1970) 17 ... iLxa2+ 18 lOxa2 llxe4 19 lOc3 :t4e7 20 h4 (20 e4, EI Arousy-Hashim, Doha 1992, 20 ... lld8 21l:.d2l:.ed7 22 l:.hdl lOe6 +) 20 ... lOd7 21 iVa4 iVxa4 22 lOxa4 lOf6 leads to an equal position, Moskalenko-Panchenko, Belgorod 1990.

i.g5

185

b322) 13 ...:tac8 14 l:.c1 lOe4 IS i.xe4 dxe4 16 i.xe7 l:txe7 17 lOd2 l:tce8 18 a3 i.dS (1/2- 1/2 Knaak-Bonsch, Stara Zagora Z 1990) 19 gS 'it'd8 20 h4 iVd6 00 Quinteros-Andersson, Marbella 1981. 10••.lOrs (D)

Now: B221: l1l:.abl 186 B222: l1l:.ae1 187 B223: 11 h3 189 Instead: a) 11 lOeS lOg4 12 i.xe7 'fixe7 13 lOxg4 i.xg4 14 llael and then: a1) 14... llad8 IS f4 i.c8 and here: all) 16 a3 'it'd6 17 fS (or 17 b4 l:.e7 18 iVf2, Beim-Hoeksema, Leeuwarden 1994, 18 ... aS! with counterplay for Black) 17 ... lOd7 18 'fif2 (BoschVan Beek, Dieren 2000) 18 ... lOf6 =. a12) 16 fS lOd7 17 'fif2 (17 a3 lOf6 18 iVf2 a6 19 'iWf4 cS 20 l:.e2 bS 21 dxcS 'iWxcs 22 'iWd4 'iWe7 1/2- 1/2 VaiserPigusov, Novosibirsk 1993) 17 ... lOf6 = Kharitonov-Nenashev, Bamau11984. a2) 14... i.hS IS f4 f6 16 iVf2 (16 a3 i.f7 17 b4 as 18 'iWb3 axb4 19 axb4 l:.a7 20 l:.f2 lOe6 21 llbl llea8 = Gershon-Antilov, Tel-Aviv 2001) 16... i.g6

186

THE CAMBRIDGE SPRINGS

17 f5 j.,f7 =Browne-Lukov, Palma de Mallorca 1989. b) 11 j.,xf6 i.xf6 12 b4 i.g4 13 liJd2 j.,e7 (D) and now:

8221) 11 ltab! as 12 a3 Or: a) 12 ltfelliJe4 13 j.,xe7 'ii'xe7 14 liJd2 liJd6 15 liJa4 'ii'd8 = TaimanovKholmov, USSR 1956. b) 12 l:tfelliJe4 13 i.xe7 'ii'xe7 14 a3 (Donner-Hort, Wijk aan Zee 1973) 14 ... liJd6 15 b4 axb4 16 axb4 b5 = EeO.

bl) 14 b5 c5 15 dxc5 i.xc5 16liJb3 (16 j.,f5 i.xf5 17 'ii'xf5 i.b4 is equal, Orlov-Baburin, Leningrad Cht 1989) 16... j.,d6 =Uhlmann-Tischbierek, Bundesliga 1994/5. b2) 14 ltabl i.d6 15 i.f5 (15 ltfel ltc8 16 i.f5 .txf5 17 'ii'xf5 a6 18 liJa4 ltc7 19 liJc5 ltce7 20 liJf3 'ii'c7 21 lIbcl liJd7 22 liJxd7 'ii'xd7 23 'ii'xd7 lIxd7 112-112 Vera-Pigusov, Sochi 1985) 15 ... i.h5 16 lIfel g6 (16 ... a6 17 liJn 'ii'g5 18 liJg3 .txg3 19 hxg3 j.,g6 20 j.,xg6 hxg6 = Matveeva-Timoshchenko, Frunze 1987) 17 .td3 'ii'g5 18 liJe2 liJd7 = Timman-Kasparov, London tt 1984. c) 11 a3 a5 12liJe5 (12 ltael liJe4 13 j.,xe7 'ii'xe7 14 j.,xe4 dxe4 15liJd2 f5 16 liJc4 00 Janjgava) 12... liJg4 13 i.xe7 'ii'xe7 14 liJxg4 .txg4 15 ltael i.h516f4f617'ii'f2.tf7 (17 ... i.g6!? 18 f5 i.f7 Avshalumov) 18 h3 b5 1ge4 dxe4 20 liJxe4 'it'd7 21 l:tdl (BagirovAvshalumov, Sevastopol 1986) and now Avshalumov gives 21...:ab8! intending ...b4 =.

c) 12 h3!? liJe4 13 i.xe7 'it'xe7 14 i.xe4 dxe415liJd2 with an unclear position - Matanovic/Ugrinovic. 12••• j.,d6 13 lteel Or: a) 13 ltfel j.,g4 14 liJd2 j.,h5 15 liJn .tg6 16 j.,M j.,xd3 17 'ii'xd3liJg6 18 j.,g3 h5 =Saritha-Prakash, Calcutta 1999. b) 13 ltbel j.,g4 14liJd2 i.h5 15 f4 h6 16.tM j.,e7!? (16 ... i.g6?! 17 f5;!; Kramnik-Kasparov, Moscow blitz (17) 1998) 17 f5 (17 h3 .tg6 18 f5 j.,h7 19 liJf3 liJ8d7 20 'it'b3 'it'c7 =; 17 liJf3 j.,xf3 18 ':xf3 liJg4 =) 17 ... liJg4 18 i.xe7 ltxe7 19 ltf3 c5 with counterplay. c) 13 b4liJg6 14 ltfel axb4 15 axb4 i.g4 16 liJM j.,d7 17 h3 lta3 18 e4 i.f4 19liJxg6 i.xg5 20 liJe5 dxe4 21 liJxe4 liJxe4 22 j.,xe4 g6 23 liJc4 lta7 24 b5 j.,f4 25 bxc6 112-112 KramnikKasparov, Frankfurt rpd 1999. d) 13 i.M i.g4 14 liJd2 j.,h5 15 i.g3 i.xg3 16 hxg3 j.,g6 (16 ... 'ii'e7!? with good play for Black) 17 j.,xg6 liJxg6 18 b4 axb4 19 ltxb4 ltxa3 20 J:hb7 (Blagojevic-Markovic, Yugoslav Cht 1997) 20 ... lte7 =. 13••• i.g414liJd2 i.hS 15 liJn .tg6 16b4 16liJa4?! j.,xd3 17 'it'xd3 h6 +Tomaszewski-Bonsch, Polanica Zdroj 1987. 16.•.axb417 axb4 h6

QUEEN'S GAMBIT: EXCHANGE VARIATION WITH

17 ... ~xd3 18 'ii'xd3 h6 old-Gabriel, Bad Homburg 18 ~xf6 'ii'xf6 19 b5 'ii'xd3 liJg6 21 bxc6 IIz-l/2 Alterman-Gabriel, burg 1996.

Ill-liz Bez1996. ~xd3 20 Bad Hom-

8222)

11 :ael (D)

B

82221)

11...~e6 12 liJe5 12 'iibl a5 13 a3 liJ6d7 (13 ... liJg6 14 liJe5 ;I; Baumgartner-Thtzer, COTTo 1988-96) 14 ~xe7 :xe7 15 b4 axb4 16 'ii'xb4 (Portisch-Larsen, Rotterdam Ct (6) 1977) 16... b6! intending ... c5, with equality. 12•••liJ6d7 13 ~xe7 13 ~f4;1; MatanoviclUgrinovic. 13•••:xe7 14 f4 14 liJxd7 'iVxd7 15 b4 :c8 16 'ifd6 17 'iWb1 :ec7 18liJe2 g6 19 :c3 liJd7 20 liJf4 liz-liz Portisch-Larsen, Rotterdam Ct (2) 1977. 14•••f615liJf3

:c1

187

15 liJxd7 'ii'xd7 16 f5 ~f7 17 :f3 :ae8 (17 ...:c8 18 'ii'12 c5, BabulaPolak, Horni Becva 1993,19 dxcS!?;I;) 18 'ii'12 (Marshall-Kupchik, Chicago 1926) 18 ...~h8!? intending ...'ii'd6, followed by ... liJd7 and ... cS =. 15•••liJb6 Or 15 ...:c8 16 fS ~f7 17 g4 cS 18 'ii'12 'iWb6!? (18 ... a6 19 liJh4 bS 20 a3 'ii'b6 21 liJg2 :ce8 22 :c I! 'ii'd6 23 'ii'f4, Rogers-Speelman, Spain 1994, 23 ...'ii'b6 ;I; Rogers) 19 g5 cxd4 20 exd4 :xe121 :xel fxg5 22liJxgSliJf6 23 ~hl ~hS =Leitao-Sega, Sao Paulo 1999. 16 f5 ~f717 g4 17 h3 'ii'c7! 18 'ii'12 :ae8 19 :e2 liJc8 Novikov-Borges, Lucerne Wcht 1997. 17•••'ii'd6 Worse is 17 ... liJc8 18 'i'g2liJd6 19 gS ~h8 20 g6 ~e8 21 gxh7 ~hS 22 liJh4 ;I; Smejkal-Morovic, Dubai OL 1986. 18e4 Or: a) 18 liJh4 :ae8 19 liJg2 liJc4 20 liJdl (Razuvaev-Beliavsky, Sochi 1986) 20 ...'iVb4!? intending ... liJd6 with good play for Black. b) 18 gS!? ~hS 19 gxf6 'i'xf6 20 liJeS :ae8 21 'i'12 liJfd7 22 liJxd7 liJxd7 23 e4 =. 18•••dxe4 19liJxe4 'ii'c7 Or 19 ... 'ii'd8 20 'ii'c5 :e8 21 liJfd2 ~dS 22 b3 Wd7 23 'ii'd6 Wf7 with equality. 20 g5liJd5 21 ~c4 'it>h8! The position is unclear (ECO), Yusupov-Spassky, Montpellier Ct 1985.

=

Here we feel it is worth presenting two options for Black: B2221: 11 ...~e6 187 B2222: 11 ...liJe4 187

i.g5

82222) 11 ...liJe4 12 i.xe7

188

THE CAMBRIDGE SPRINGS

No better is 12 .1f4 .1fS 13 .1xe4 (13 h3 .1d6 14 .1xd6 'it'xd6 IS liJh4 .1d7 16liJf3 .1fS 17 ltJh4 .1d7 18liJf3 112-112 Gulko-Bagirov, Leningrad 1977) 13 ... .1xe4! 14liJxe4 dxe41SliJd2 .1b4 16 l:.dl .1xd2 17 l:lxd2 'it'dS 18 b3 l:.ad8 19 l:lfdlliJe6 20 .1g3 l:ld7 21 h3 l:led8 22 b4 as 23 bxaS l:la8 24 l:lbl l:lxaS 2S l:lb2 h6 26 'ii'bl liz-liz SapisM.Maciejewski, Mikolajki 1991. 12••• 'it'xe7 13 .1xe4 dxe4 14liJd2 f5 15 f3 Or IS dS .1d7 16 'ii'b3 (16 f3 exf3 17 liJxf3 cxdS 18 liJxdS 'it'e4 19 'it'xe4 l:.xe4 20 liJd4 l:lae8 = Spassov-Van der SteITen, Albena 1983) 16... cxdSI7 'it'xb7 :eb8! 18 'it'xdS+ .1e6 19 'it'c6 .1d7 20 'it'a6 (20 'it'dS+ .1e6 21 'it'c6 .1d7 22'it'dS+ llz-lh Ulybin-Gleizerov, Cheliabinsk 1993) 20 ... l:lxb2 21 liJb3 .1e6 22liJd4 l:lb6! 23 'it'aS 'it'b4 with equality, Azmaiparashvili-Zaid, USSR 1985. 15.•.exf3 16 liJxf3 .1e6 17 e4 fxe4 (D)

18l:lxe4 Or: a) 18 'it'xe4 l:lad8 19 l:.e2 liJg6 20 l:lfel 'it'd7 (intending ....1f7 = ECO) Semkov-Panchenko,Sochi 1982.

b) 18 liJxe4 .1fS (or 18 ... .1dS 19 liJcs 'it'f6 20 liJeS 'it'h4 21 'it'd2, de Souza-Kokkila, Baguio jr Wch 1987, 21...liJe6 =) 19liJeS (Rogers-Morovic, Buenos Aires OL 1978) 19 ...'it'e6!? 20 b3 (20 'it'a4 .1xe4 21 :xe4 liJd7 22 l:.fel 'it'dS 23 a3 l:le7 =) 20 ...:ad8 21 'it'cs (21 'it'c3 .1xe4 22 l:lxe4 'it'dS 23 :fel liJd7 =) 2l....1xe4 22 l:lxe4 'it'dS 23 'it'xdS+ cxdS 24 l:.eel l:le7 with equality. 18•••l:lad8!? 19 :fe1 Other moves: a) 19liJe2liJg6 20 b3 l:lf8 21 'it'cs 'it'xcs 22 dxcS .1dS = Luzardo-Arias Duval, COIT. 1999. b) 19liJeSliJd7 20 liJxd7 (20 l:lfel liJxeS 21 l:lxeS 'it'd7 22 'ii'f2 .1f7 is equal) 20 ...'it'xd7 21 l:lh4 h6 leads to good play for Black, Orlov-Panchenko, Minsk 1986. c) 19 l:.eS h6 20 liJe4 'it'c7 21liJcS (or 21 :el, Hesselbarth-Dittmar, COIT. 1985, 2l....1f7 22 l:lxe8 l:.xe8 with equality) 2l....1dS 22 :fel l:lxeS 23 liJxeS b6 = Dalko-Kiprov, COIT. 196977. d) 19'it'e2 h6 20 liJeSliJh7 21liJf7 l:.c8 22 liJeS liJf6 23 l:.ef4 l:lcd8 = Harikrishna-Azarov, Oropesa del Mar U-16 Wch 1999. 19••.'ii'c7! 20 'it'a4 20 liJgS is no better: a) 20 ...'it'd7!? 21liJxe6 (21 1Wa4 bS 22'it'a3 .1c4 =; 21 'it'e2 .1f7 22liJxf7 l:lxe4 23 'it'xe4 'it'xf7 =) 2l...l:lxe6 22 'ii'b3 :de8 23 d5 cxdS 24liJxdS ~h8 is equal. b) 20... .1f7 21 l:ln .1c4 = 22liJe2 .1dS 23 l:ef4 liJg6 24 l:g4 l:lf8 with good play for Black, Hagstrom-Melander, COIT. 1977. 20•.•a5 21 b4

QUEEN'S GAMBIT: EXCHANGE VARIATION WITH

21 lte5 i.f7 22 'it'xa5 'ii'xa5 23 ':xa5 ltxel + 24 liJxel ':xd4 25 liJf3 l:.d7=. 21...axb4 22 'ii'xb4 iLf7 23 liJe5 liJg6 24 liJxf7 'ii'xf7 25 ltn 'ii'd7 The position is equal.

8223) 11 h3 i.e6 (D)

Now: B2231: 12 ltabl 190 B2232: 12liJe5 190 Alternatively: a) 12 a3 liJ6d7 13 iLf4 (alternatively, 13 i.xe7 'ii'xe7 14 b4 liJg6 15 .!:tfel 'ii'f6 16 'it'd 1, Beliavsky-Yusupov, USSR 1983, 16... ltac8!? with the point 17 b5 c5 = Beliavsky) 13 ... a5! 14 liJa4liJg6 15 iLh2 i.f8 16 ltfbl 'ii'f6 17 'it'dl iLf5 112-112 Nikolic-Timman, Reykjavik 1991. b) 12 iLf4 ltc8 13 liJa4 i.d6 14 liJe5 ltc7 15 ltabl (or 15 iLh2 i.c8 16 f4 liJe4! with equality - Krasenkow) l5 ... liJg6 (15 ... i.c8!? intending ... c5 or ... liJg6 - Krasenkow) 16 iLh2 i.c8 (16 ... c5!? 17 liJxc5liJxe5! 18 dxe5 ltxc5 = Krasenkow) 17 'ii'c3 liJe4 18 iLxe4 dxe4 19 liJc5 liJxe5 20 dxe5 i.xc5 21

iLg5

189

'ikxc5 (Krasenkow-Yusupov, Pula Echt 1997) 21...b6 (intending ... i.a6) 22 'it'd6 = Krasenkow. c) 12 ltael ltc8!? (12 ... liJ6d7 13 iLf4 liJg6 14 i.g3 liJdf8 15 liJa4 i.d6 16 iLxd6 'it'xd6 17 liJc5 b6 18 liJxe6 liJxe6 19 ltel ltac8 20 ltfdl {;!; Dautov} 20 ... ltc7 21 a3 ltec8 22 'iibl a523 ltc3 liJgf8 24 'ii'c2 g6 25 e4 dxe4 26 i.xe4liJd7 27 'ifb3 112-112 Dreev-Akopian, Groningen 1991) 13 liJe5 liJ6d7 14 iLxe7 (Chatalbashev-Lacrosse, Cappelle la Grande 1992) 14... 'ikxe7!? 15 liJxd7 i.xd7 16 'iib3 'ikg5 17 h2 lte7 is equal. d) 12 iLxf6 i.xf6 13 b4 ltc8 and now: dl) 14 ltacl ltc7!? 15 liJa4 - 14 liJa4 lte7 15 ltacJ. d2) 14 ltfel i.e7 15 ltabl i.d6 16 i.f5 a6 17 liJa4 ltc7 18 liJc5 g6 19 iLxe6liJxe6 20 a4liJg5 21 ltd lliJe4 22 liJxe4 ltxe4 112-112 Markus-Lekic, Yugoslav Cht 2001. d3) 14 liJa4 ltc7 15 ltacl (15 liJc5 i.c8 00 ECO) 15 ... i.e7! 16 'ii'bl i.d6 17 b5 'it'f6 18 bxc6 bxc6 19liJh2 (Karpov-Campora, San Nicolas (2) 1994) and now according to Sadler Black should play 19... liJg6! 20liJc5 (20~hl liJh4! 21 iLxh7+ h8 22 i.d3 i.xh3 23 gxh3 i.xh2 24 xh2 'ikf3 25 ltgl 'it'xf2+ 26 hl 'it'xe3 27 iLfl 'ii'f3+ 28 '>fI>h2 ltce7 -+) 20 ... i.c8 21liJa6 ltce7 (we propose 2l...iLxa6!? 22 i.xa6liJh4 with good play for Black) 22 liJb4 (a blunder; 22 'ike2!? looks equal to us) 22 ...':b7! -+. e) 12 ltfel!? and then: el) 12...ltc8 13 a3liJg6 (13 ...liJ6d7!?) 14 b4 a5 (Yermolinsky-Christiansen, USA Ch 1999) 15 iLxf6 i.xf6 16liJa4 ;!; Yermolinsky.

190

THE CAMBRIDGE SPRINGS

e2) 12...ttJ6d713 .i.f4 }:lc8 14 }:ladl (14 }:lac1!? is an alternative) 14...ttJb6 IS a3 .i.d6 (1S ...ttJc4!?) 16 .i.xd6 'ii'xd6 is slightly better for White, LahiriSriram, New Delhi 2001. f) 12 }:lfc1!? ttJ6d7 13 .i.f4 ttJb6 and now: fl) 14 ttJe2 as IS .i.h2 f6 16 ttJd2 (16 ttJf4 i.f7 17 ttJd2 .i.d6 18 ttJb3 ttJc4 00) 16....i.f717 }:labl (Palm-Krzyszton, corr. 1982-91) 17 ... .i.g6!? 18 ttJf4.i.xd3 19 ttJxd3 ttJe6 =. f2) 14 }:labl ttJg6!? (14 ... .i.d6 IS ttJe2 ttJg6 16 .i.xd6 'ii'xd6 17 a4! ;!; Karpov-Kharitonov, USSR Ch 1988) IS .i.h2 (1S i.g3 .i.d6 16 i.xd6 'ii'xd6 17 ttJe2 'fie7 18 ttJg3 ;!; Toth-Tischbierek, Badenweil 1995) IS ... aS! and according to Janjgava the position is unclear, Cherniak-Klovans, Leningrad 1989.

82231) 12 }:labl ttJ6d7 Or 12... aS!? 13 a3 ttJ6d7 14 .i.xe7 'fixe7 IS b4 (1S }:lfc1 'ii'f6 16 'ii'dl ttJg6 17 ttJa4 hS 18 ttJcS ttJxcS 19 }:lxcS .i.fS 20 .i.xfS 'ii'xfS 21 'ii'c2 =BabulaJirovsky, Pardubice 1991) IS ... axb4 16 axb4 }:lec8!, and now: a) 17 ttJa4 g6 18 }:lfc1 bS! 19 ttJcS ttJxcS 20 dxcS }:la4 21 ttJd4 .i.d7 22 'fib2 }:lca8 Ellers-Klovans, Berlin 1993. b) 17 }:lfc 1 g6 18 ttJd2 ttJf6 19 ttJa4 ttJ8d7 20 ttJcS b6 21 ttJxe6 'ii'xe6 22 }:lal }:lxal 23 }:lxal 'ii'd6 24 'fic3 cS 2S bxcS bxcS 26 dxcS 'ii'xcs 27 'ii'xcs :XcS 28 ttJf3 }:lc8 29 }:ldl liz-liz FrancoNogueiras, Las Palmas 1992.

=

13.i.f4 13 .i.xe7 'fixe7 14 b4 }:lac8 IIz-I/2 Guseinov-Kuzmin, Doha 1992. 13...ttJb6 14 ttJa4 14 b4 (Beliavsky-Ivanchuk, Linares 1993) 14... ttJg6 IS .i.h2 (IS bS cS 16 dxcS .i.xcS 00 ECO) IS ...ttJc4!? 16 .i.xc4 dxc4 gives Black counterplay in an unclear position -I.Sokolov. 14•••ttJxa4 15 'ii'xa4 ttJg6 16 .i.h2 i.d6 17 ttJe5 'fif6 18 'fic2 ttJxe5 19 dxe5 .i.xe5 20 .i.xh7+ ~h8 21 .i.xe5 'ii'xe5 22 .i.d3 The position is unclear (ECO), I.Sokolov-Yusupov, Amsterdam 1994.

82232) 12 ttJe5 ttJ6d7 13 .i.xe7 13 .i.f4 ttJxeS 14 dxeS f6 IS exf6 i.xf6 16 e4 .i.xc3 17 bxc3 dxe4 18 .i.xe4 1/2- 1/2 Raicevic-Rosic, Yugoslav Cht 1996. 13•••:Xe7 14 f4 f6 15 ttJf3 ttJb6 IS ... .i.f7 16 }:lael "fic7 17 g4 }:lae8 (00 Bagirov), Varga-Vojinovic, Budapest 1994. 16 }:lae1 'ii'c7!? 16...ttJc8 17 g4 (17 fS.i.f7 18 e4 00 ) 17 ... ttJd6 18 'fig2 (18 fS .i.f7 19 'iih2;!; Kramnik) 18 ... ~h8 (18 ... .i.f7 19 fS 'fie8) 19 fS .i.f7 20 ~hl (KramnikRenet, Paris 1995; 20 gS .i.hS 00; 20 ~h2 'fic7 21 'fig3 ttJe8 = Kramnik) 20 ..."fie8! 21 'ii'g3 (21 gS!?) 2l...}:ld8 22 'fif4 bS!?;!; Kramnik. 17 }:le2 I.Sokolov-Timman, Amsterdam 2001 continued 17 ... i.d7 18 }:lfel cS 19 e4 ±. Better is 17 ...}:lae8!?, when Black has no problems.

Index of Variations Chapter Guide 1 d4 d5 2 c4 e6 3lDc3 3 lDf3 - Ch. 10 3 •••lDf64~g5 4 cxd5 exd5 5 ~g5 - Ch. 11 Other lines - Ch. 10 4••• lDbd7 5 e3 Other moves - Ch. 10 5 ••• c66lDn Other moves - Ch. 10 6 •••'ii'a57lDd2 Rare alternatives - Ch. 1 7 ~xf6-Ch. 2 7 cxd5 without 7 ... lDxd5 - Ch. 3 7 cxd5 lDxd5 misc. - Ch. 4 7 cxd5 lDxd5 8 "ikd2lD7b6 - Ch. 4 7 cxd5 lDxd5 8 "ikd2 ~b4 - Ch. 5 7••• ~b4 Rare alternatives - Ch. 6 7 ... dxc4 - Ch. 7 S"ikc2 Other moves - Ch. 8 Now (after 8 "ikc2): 8... 0-0 - Ch. 9; Other moves -Ch. 8

1: Rare 7th Moves for White 1 d4 d5 2 c4 e6 3 lDc3 lDf6 4 ~g5 lDbd7 5 lDf3 c6 6 e3 "ika5 11 A: 7 c5?! 11 B: 7 ~d3? 12 C: 7 a3 13 7 ...lDe413 0: 7 'ifb3 14 7 ...lDe4 8 ~f414 E: 7 l:c116 F: 7 'ifc2 16 7 ...lDe4 8 cxd5 17

2: 7 ~xf6 1 d4 d5 2 c4 e6 3 lDc3 lDf6 4 ~g5 lDbd7 5lDf3 c6 6 e3 'ifa5 7 ~xf6 20 7 ...lDxf6 20 A: 8 c5 21 B: 8"ikb3 22 C: 8 "ikc223

0: 8 a3 24 8... lDe4 24 E: 8 ~d3 25: 8...lDe4 26; 8...~b4 26; 8...~e7 28; 8 ... dxc4 29 F: 8lDd2 30: 8...~e7 31; 8...~d6 33; 8...~b435

3: 7 cxd5: Introduction and Minor Lines 1 d4 d5 2 c4 e6 3 lDc3 lDf6 4 ~g5 lDbd7 5 lDf3 c6 6 e3 "ika5 7 cxd5 38 A: 7 ... cxd5 39 B: 7 ... lDe4 39 8 dxe6 fxe6 40: 9 ~h4 40; 9 "ika441 C: 7 ... exd5 41: 8 "ikc2 42; 8 'ii'b3 42; 8 ~xf6 43; 8 ~d3 44; 8 lDd2 48

4: 7 cxd5 lDxd5 including 8 "ikd2 lD7b6 1 d4 d5 2 c4 e6 3 lDc3 lDf6 4 ~g5 lDbd7 5 lDf3 c6 6 e3 "ika5 7 cxd5lDxd5 53 A: 8 'ii'b3 54: 8... h6 54; 8...~b4 55 B: 8 "ikd2 56 8 ... lD7b6 56 B1: 9 a3 57 B2: 9 l:c158 B3: 9 lDxd5 59 B4: 9 ~d3 60 9...lDxc3 10 bxc3lDd5 62: 11 l:c1 63; 11 0-0 64 5: 7 cxd5 lDxd5 8 "ikd2 ~b4 1 d4 d5 2 c4 e6 3 lDc3 lDf6 4 ~g5 lDbd7 5 lDf3 c6 6 e3 "ika5 7 cxd5 lDxd5 8 "ikd2 ~b4 68 9 l:c1 68 A: 9... f6 69 B: 9... c5 69: 10 ~d3 70; 10 e4!? 70; 10 a3 71 C: 9... h6 7110 ~h4 71: 10...0-072; 1O ... c572 0: 9...0-0 74 01: 1O~d3 75 011: 1O...e5 75 11 0-0 l:e8 75: 12 "ikc2 76; 12 e4 76 012: 1O ... h6 77 11 ~h4 e5 77: 12 a3?! 77; 120-078 02: 10 e4!? 80

192

THE CAMBRIDGE SPRINGS

6: 7 lDd2: Introduction and Minor Lines 1 d4 d5 2 c4 e6 3 lDc3 lDf6 4 1.g5 lDbd7 5 e3 c6 6lDf3 'Wa5 7 lDd2 83 A: 7 ... i.e7 83 B: 7 ...lDe4 85 8lDdxe4 dxe4 85: 91.f4 85; 9 1.h4 88 7: 7 lDd2 dxc4 1 d4 d5 2 c4 e6 3 lDc3 lDf6 4 i.g5 lDbd7 5 e3 c6 6 lDf3 'Wa5 7 lDd2 dxc4 90 8 i.xf6 lDxf6 90 A: 9 1.xc4 91 B: 9lDxc4 92 BI: 9 ...'Wg5 92 B2: 9 ...'Wd8 93 B3: 9 ...'Wc7 94: 10 a3 94; 10 g3 95; 10 J:l.cl 98; 10 1.d3 99; 10 i.e2 102 8: 7 lDd2 1.b4: Minor Lines 1 d4 d5 2 c4 e6 3 1Dc3 lDf6 4 i.g5 lDbd7 5 e3 c6 6lDf3 'Wa5 7 lDd2 i.b4 8 'Wc2 107 A: 8...c5!? 109 B: 8 ... e5?! 109: 9 dxe5?! 110; 9lDb3 111; 9 1.xf6! 111 C: 8... i.xc3?! 112 D: 8...lDe4 113 9lDdxe4 dxe4 10 i.h4 113 DI: 1O... f57! 113 D2: 10... 0-0114 11 1.e2 e5 120-0 114: 12.. .f5?! 114; 12...exd4116 E: 8... dxc4117 9 1.xf6lDxf6 117 EI: 10 1.xc4117: 1O ... lDd5 118; 10...0-0 118; 1O ...e5 119 E2: 10 lDxc4119 E2I: 1O... 'Wg5 119 E22: 1O ... 'Wh5 120 E23: 1O ...'Wd8 121 E24: 1O ... i.xc3+ 121 E25: 1O...'Wd5 122 E26: 1O ...'Wc7 122: 11 g3 123; 11 a3 123; 11 1.d3 126; 11 i.e2 127 9: 7 lDd2 1.b4: Main Line (8 'Wc2 0-0) 1 d4 d5 2 c4 e6 3 lDc3 lDf6 4 1.g5 lDbd7 5 e3 c6 6 lDf3 'Wa5 7 lDd2 1.b4 8 'Wc2 0-0 132 A: 9 i.h4 133: 9 ... c5 134; 9 ... l:te8 134; 9 ... e5135

B: 9lDb3 136 ~::A:"" •. n ' I 7~ C: 9 a3 137: 9 ... ~!LN8; ~c41,J#"j D: 9 1.xf6140 9 ... ~71lf!f:; • Dl: lO1.e2140: Io .. ~!i.L~xc4 142 D2: 10 1.d3143: 1O... h6144; 1O... c5 145; 1O ... b6145; 1O ... i.d7 146; 1O ...'Wc7 146; 1O ... J:l.e8146 E: 91.e2149 EI: 9 ... b6149 E2: 9 ... c5 150: 10 0-0 150; 10 lDb3 151 E3: 9 ... l:te8 152 E4: 9... e5 153: 10 i.xf6 153; 10 0-0155; 10 dxe5! 160 10: White Avoids the Cambridge Springs: Minor Lines 1 d4d52c4e6 A: 3lDf3162 B: 3lDc3 165 3 ... lDf6 165 BI: 4 e3 165 B2: 4 i.f4 166 B3: 4 i.g5lDbd7 5 e3 c6 166: 6 'Wc2 166; 61.d3 167; 6 a3 167 B4: 4lDf3lDbd7 168 B4I: 5 e3 169 B42: 5 1.g5 169 B43: 5 1.f4170 5 ...dxc4! 170: 6 e4170; 6 e3170

B44: 5 cxd5 171 5 ... exd5 6 i.f4 c6171: 7 'Wc2 172; 7 e3 172 B5: 4 cxd5 exd5 174 5 lDf3 i.e7 6 i.f4 c6 175: 7 e3 175; 7 'Wc2 176

11: Queen's Gambit: Exchange Variation with 1.g5 1 d4 d5 2 c4 e6 3 lDc3 lDf6 4 cxd5 exd5 5 1.g5 c6177 A: 6 'Wc2 177 6 ...1.e7 7 lDf3 g6 177: 8 e4 177; 8 e3178 B: 6 e3 180 6 ...1.e7 180 BI: 7lDf3 180 B2: 7 1.d3 182 7 ... lDbd7 8 'Wc2 0-0 182 B2I: 9lDge2182 9 ... l:te8 182: 10 h3 182; 10 0-0183 B22: 9lDf3 184 9 ... l:te8 10 0-0 lDf8 185: 11 J:l.abII86; 11 J:l.aeII87; 11 h3 189