Resultado del Plan Colombia

Andersson-A . Sokolov 0-0 and Black had finally castled. White won

Bar 1997

the pawn back but the game was equal. Also

possible here is 8 ... cxd4 9 ltJxd4 'iWb6 10 1 d4 dS 2 c4 e6 3 lDf3 lDf6 4 g3 dxc4 S

'ilia4+ lDbd7 6 !ii..g2

ltJc2 i.e7 1 1 'it'xc4 0-0, when Black ad­ dressed development and achieved a good

position after 1 2 b4 ltJe5 1 3 'iVb3 .i.d7 14 .i.e3 'it' c 7 1 5 l:Iac1 .i.c6 1 6 .i.xc6 ltJxc6 1 7 .i.f4 'iVb6 i n Lindberg-Jakovenko, Oropesa 2001 .

7 ... .l:Ib8 looks sensible. 8 'iixc4 b5 9 'iYd3 .i.b7 1 0 0-0 c5 1 1 .i.f4 .l:i.c8 1 2 dxc5 .i.xc5 1 3 Itadl 0-0 14 ltJe5 and White was trying to generate an initiative In Andersson­ Kasparov, Belgrade (6) 1 985, which went

14 ... 1Lxg2 1 5 'It>xg2 ltJxe5 1 6 .i.xe5 .i.e 7 1 7 'it' f3 'it' a s 1 8 it'b 7 .l:i.fe8 1 9 a3 b 4 (securing a level game) 20 .i.xf6 gxf6 21 axb4 'it'xb4 22 Wixb4 .i.xb4 23 ltJe4 'It>g7 24 ltJd6 with a draw. Returning to the 1 2th move, the more sophisticated 1 2 ... b4 has also been tried. In Mochalov-Sveshnikov, Minsk 2000 compli­ cations soon led to the arrival of the ending phase after 1 3 ltJa4 'it'a5 14 ltJb6 ltJxc5 1 5 ltJc4 it'b5 1 6 ltJd6+ .i.xd6 1 7 �xb5+ axb5 1 8 .i.xd6 ltJfe4 1 9 1Lxc5 .l:i.xc5, when Black's activity was sufficient to maintain the bal­ ance: 20 .i:tfc1 'It>e7 21 .l:i.xc5 ltJxc5 22 .l:i.c1 .l:!.c8 23 ltJe5 ltJa4 24 .uxc8 1Lxc8 etc. 8 lLle5

8 . . . 0-0

Another Andersson game went 8 .. J::tb8 9 ltJxd7 (or 9 'iYxc4 c5 10 ltJxd7 'iYxd7 1 1 .i.f4 b5 1 2 'iVd3 c4 1 3 'iYc2 .i:tb6 with counterplay for Black) 9 ... 'iVxd7 10 'iYxc4 b5 1 1 'iVd3 1Lb7 1 2 .i.xb7 ':'xb7 1 3 Wio .l:i.b6 1 4 0-0 'it'c6 1 5 'ii'xc6+ l::txc6 and Black was well developed in Andersson-Hubner, Tilburg 1 98 1 , with White getting no chance to ex-

4 . . . dx c 4 5 'Wa4 + ploit the c-file or the often weakened c5- square. Consequently 16 .i.g5 l:Ic4! 17 e3 c5 1 8 1Lxf6 gxf6 19 dxc5 0-0 20 l:tac1 l:!.d8 21 ltJb 1 .l:i.xc5 22 .l:i.xc5 .i.xc5 23 .l:i.c1 .i.b4 left Black with the superior ending .

9 lLlxd7

9 ltJxc4 has also been played. Black was never in danger in the opening in Poluljahov­ Zakharevich, St. Petersburg 2001, which went 9 ... c5 10 dxc5 1Lxc5 1 1 0-0 .l:i.b8 12 'it'dl 'ii'c7 1 3 1Lf4 e5 14 .i.e3 b5 1 5 .i.xc5 ltJxc5 1 6 ltJe3 .i.b7 1 7 1Lxb7 .l:i.xb7 1 8 .l:i.c1 'ii'd8 etc.

9 . . . .i.xd7 1 0 'Wxc4 b5 1 1 'Wb3 b4 1 2 lLle4 .i.b5 1 3 lLlxf6 + .i.xf6 1 4 .i.e3

Also possible is the greedy 14 .i.xa8 'ifxa8 1 5 0, although in the following lines Black obtains healthy compensation: 1 5 ... 1Lxd4 1 6 .i.e3 (1 6 'ii'xb4 c 5 1 7 'iVb3 e 5 1 8 a4 .i.d7 is fine for Black as White still needs to com­ plete development) 1 6 ... e5! 1 7 .l:i.c1 (White must be careful here, e.g. 1 7 .i.xd4 exd4 1 8 'ii'xb4? .l:i.e8 1 9 0-0-0 c5! with the better chances for Black thanks to his busier pieces and White's insecure king) 1 7 ... c5 18 .i.xd4 exd4 1 9 .i:txc5 .l:i.e8 20 .l:i.xb5 (White returns the exchange and secures equality) 20 ... axb5 21 'it'f2 'iVa7! 22 .i:te1 �c5 etc. (A.Sokolov) 1 4 .. J:tb8 1 5 l:td 1 c5!

Black temporarily sacrifices a pawn in or­ der to activate his forces. Note that White's king is still in the centre.

Black continues to play with purpose. 1 9 O-O! i.b5 20 'tib3

20 'ii'g4? is poor in view of 20 ... .i.xd2 21 .i.xd2 'ii'xa2 and White has lost a pawn for no compensation.

20 . . . i.xd2

20 ... .ta4 21 'it'c4 .i.b5 with a repetition. 2 1 i.xd2 i.xe2 22 l:!.e 1

The passed pawn on the c-ftle gives White only a little compensation.

22 .. . it'b5

22 ... 'ii'c7 23 c6 as is more accurate, with an edge for Black.

23 e6 a5 24 i.e3 a4 25 it'e2 i.d3 26 'tid 1 i.e4 27 b3 axb3 28 axb3 i.e2 29 'tie2 l:!.be8 30 h3

Now it is difficult for Black to proceed. 30 . . . e5 31 'tib2 f6 32 ..t>h2 i.h5 33 l:!.e5 % - %

After 3 3 ... 'it'd3 3 4 'iVxd2 'il'xd2 3 5 .txd2 .i.f7 36 .txb4 .txb3 37 c7 Wf7 38 .tb7 .te6 the position is balanced.

Game 24

H Gbner-Smyslov

TilbufJ!, 1982

1 d4 d5 2 e4 e6 3 liJf3 liJf6 4 g3 dxe4 5 'tia4+ liJbd7 6 it'xe4

6 . . . a6

The immediate break in the centre with 6 ... c5 is also possible, bringing the game to a new junction. For example in Karpov-

Korchnoi, Moscow (8) 1974, Black devel­ oped fluidly and had no problems after 7 .i.g2 b6 8 0-0 .i.b7 9 l:tdl a6 10 dxc5 .txc5 1 1 b4 .te7 12 .tb2 b5 13 'ii'd4 l:tc8 1 4 lLlbd2 0-0. Also possible here i s 8 lLle5 cxd4 9 lLlxf7! 'it>xf7 10 .txa8 lLlc5 when White wins the exchange but lags behind in devel­ opment, and must face Black's counterplay.

7 dxc5 .txc5 8 .tg2 a6 (8 ... 'il'c7 9 lLla3!? might favour White) 9 'ifb3 l:!.a7 10 a4 and now the direct 1O ... b5 1 1 axb5 'it'b6 1 2 0-0 'ilVxb5 1 3 'ilVxb5 axb5 1 4 l:txa7 .i.xa7 1 5 lLlc3 keeps White ahead in the development race and therefore earns him an edge. Chetverik­ Vujosevic, Gyongyos 1997 instead continued 1 0 ... b6 1 1 0-0 .i.b7 1 2 lLlc3 'iVa8, when Black should be fine in the hedgehog position that results from 1 3 lLlh4 .i.xg2 14 lLlxg2 0-0 1 5 .i.e3 etc.

7 'ilfe2 e5 8 i.g2 b6

Grivas-Kourkounakis, Athens 1 996 went 8 ... cxd4 9 lLlxd4 .ll.b4+ 10 .ll.d2 'it'e7 1 1 0-0 0-0 12 J:td 1 lLlb6 1 3 .i.xb4 'il'xb4 14 lLlc3 and Black had problems with queenside de­ velopment.

9 liJe5

G.Agzamov-Zaid, USSR 1 984 demon­ strated an interesting approach to the posi­ tion: 9 dxc5 .i.xc5 10 lLlg5!? llb8 1 1 lLlc3 .i.b7 12 0-0 .i.xg2 1 3 Wxg2 'ilVc8 14 l:tdl 'itb 7+ 1 5 f3 0-0 1 6 lLlce4 lLlxe4 17 lLlxe4 .i.e7 1 8 lLld6 (after this exchange White has the superior minor piece) 1 8 ... .i.xd6 1 9 1Ixd6 l:tbc8 20 'it'dl and White was better.

9 . . . liJd5 1 0 liJe3

The aggressive 10 lLlc6!? 'iVc7 1 1 e4 is in­ teresting. Zaitchik-A.Ivanov, Beltsy 1977 continued 1 1 ...'ii'xc6 1 2 exd5 exd5 1 3 lLlc3 lLlf6 14 .i.g5 cxd4 1 5 .i.xf6 dxc3 1 6 1l.xc3 and Black once again experienced develop­ ment difficulties. There followed 1 6 ... .i.e6 17 'it'e2 'iWb5 18 'ii'e5 �c8 1 9 a4 'ii'c4 20 .i.fl 'iie4+ 21 'ii'xe4 dxe4 22 .i.xa6, White win­ ning back the pawn with advantage. 1 0 .. . i.b7

0-0 0-0 14 f4 and White has an initiative on the kingside.

1 1 liJxd5 exd5 1 2 0-0 !il..e 7 1 3 J:td 1 0-0 1 4 'Wif5

14 �f4 l:!.c8 1 5 ..wfS is more precise. 14 . . . liJxe5 1 5 dxe5 J:ta7 !

1 6 e6?!

White goes for the direct attack in the cen­ tre. Other tries don't promise an advantage, e.g. 1 6 'iVd3 'iVc7 1 7 �xd5 �xd5 1 8 'it'xd5 l:!.d8 19 'iib3 l:txd 1+ 20 'it'xd 1 'iVxe5 with an equal game, or Smyslov's 1 6 e3

g6

1 7 'iVf4 f6 18 e6 'it'c8, when Black frees himself success­ fully.

1 6 .. . d4 1 7 !il..xb7 J:txb7 1 8 e3 !il..f6 1 9 exd4 �e7 ! 20 !il..e3

20 exf7+ l:1fxf7 21 ..wd3 'it'xd4! 22 'iVb3 c4 hands over the initiative to Black.

20 . . .fxe6 21 'Wig4 h5! 22 'Wixh5

This is better than 22 'iVe4 cxd4 23 �xd4 l:!.d7 24 'it'xe6+ 'it>h8 25 'ii'xd7 'ii'xd7 26 .i.xf6 'it'e6 27 .td4 when White suffers on the light squares.

22 . . . cxd4 23 'Wie2 'ii"d5!

The centralization of the queen and Black's centre are more important features here than the a-pawn.

24 'ii"xa6 b5 25 'Wia5 e5 26 !il..d2 J:ta8 27 'Wib4 J:tea7 28 !il..e 1

White should prefer the more adventur­ ous 28 l:1ac1 l:txa2 29 l:!.c5 'iWf3 30 l:!.dc1 ..wd3! 31 l:!.xb5 �h7, although Black retains the initiative.

4 . . . dx c 4 5 'Wia4 + 28 . . . J:txa2 29 J:tac 1 J:t2a4 30 'ii"c5 'Wixc5 3 1 J:txc5 J:ta 1 32 J:tcc 1

32 l:[xa 1 l:!.xa 1 33 'it>f1 d3 34 l:[d5 e4 35 f3 �xb2 36 fxe4 iLc3 is poor for White. 32 . . . J:txc 1 33 J:txc 1 e4! 34 '1t>f 1 J:ta2 35 J:tb 1 '1t>f7 36 !il..b4 J:ta4 37 !il..d2 '1t>e6 38 h4 '1t>d5

Black has control of the centre and supe­ rior forces.

39 '1t>e 1 J:ta2 40 h5 d3 4 1 !il..c 1 !il..d4 42 g4 b4 43 g5

43 .td2 �xb2 44 �xb4 doesn't work for White in view of 44 ... �d4 45 .td2 .txf2+.

43 . . . 1:.a8

The threat of ... J:Ih8 forces White into a hopeless rook ending.

44 !il..e3 !il..xe3 45 fxe3 J:th8 46 J:ta 1 J:txh5 47 J:ta7 g6 48 J:ta6 J:th2 49 J:txg6 J:te2+

,?O

'1t>d 1 J:txe3 51 J:tg8 J:tg3 52 '1t>d2 '1t>c4 53 b3 + '1t>xb3 54 g6 J:tg2+ 55 '1t>e3 d2 56 J:td8 '1t>c2 57 J:tc8 + '1t>d 1 0-1

Game 25

Alekhine-Junge

Prague 1942

1 d4 d5 2 c4 e6 3 liJf3 liJf6 4 g3 dxc4 5 'ii"a4+ liJbd7 6 'ii"xc4 a6 7 !il..g2

7 . . . b5

Also possible is 7 ... c5 8 dxc5 .txc5 9 'it'd3 b5!?, as played in Nogueiras-Marjanovic, Sarajevo 1 985, which continued 10 4Je5 4Jd5 1 1 4Jxd7 �xd7 12 4Jc3 4Jb4 13 'ii'bl �c6

1 4 0-0 Jixg2 15 �xg2 0-0 1 6 a4 �d5 17 l:td1 �xc3! (from here the rest is practically forced) 1 8 l:txd8 �xb 1 1 9 lIxa8 lha8 20 axb5 �a3! 21 bxa3 axb5 22 l:tb1 Jixa3 23 Jixa3 l:txa3 and a draw was agreed.

S 'iWc6

8 'ii'c2?! is less ambitious. 8 ... c5 9 0-0 Jib7 10 �c3 l:tc8 1 1 dxc5 Jixc5 12 �3 �6 looked fine for Black in Skatchkov-Lastin, Nizhnij Novgorod 1 999. After 1 3 a4 b4 1 4 a 5 Wia7 1 5 �a4 i.d5 1 6 'it'd1 'iVb7 1 7 �e1 Jia7 18 i.xd5 �xd5 19 �d3 h5 this unex­ pected pawn advance enabled Black to create an initiative: 20 �f4 �5f6 21 �b6 i.xb6 22 axb6 h4 etc.

White delayed castling in Grabaczyk­ Krasenkow, Lubniewice 1 998, so after 9 a4 Jib7 10 dxc5 i.xc5 1 1 axb5 axb5 1 2 l:txa8 'ii'xa8 1 3 �c3 0-0 Black was the first to complete development, seizing the initiative after 1 4 �xb5 i.e4 1 5 'it'd1 �e5 1 6 0-0 l:td8 1 7 'iVe1 ? �xf}+ 1 8 Jixf3 Jixf3 1 9 exf3 'ii'xf3 20 �c3 l:td3! 21 Jif4 �g4 22 �e4 �xf2! 23 �xf2 l:td1 ! with a decisive lead.

S . . . .l:!.bS

8 ... .l:!.a7 is a bit awkward. 9 'it'c2 Jib7 10 0-0 c5 11 a4 �a8 1 2 axb5 axb5 1 3 l:txa7 'iVxa7 14 �a3 is given as slightly better for White by Neistadt as Black still needs to ad­ dress his development. Pogorelov-Korneev, Albacete 2000 went instead 9 i.f4 i.b 7 10 �c2 c5 11 dxc5 Jixc5 1 2 0-0 0-0 1 3 �bd2 �d5 1 4 �b3 �xf4 1 5 gxf4 Jib6 1 6 l:tfd1 'iVe7 1 7 l:tac1 h6 1 8 �bd4 .l:!.e8 1 9 e3 �b8 with an unclear position in which Black has the bishop pair but White the more active pieces.

9 0-0

9 i.g5 i.b 7 10 i.xf6 Jib4+ 1 1 �bd2 i.xd2+ 1 2 Wxd2 gxf6 1 3 'it'c3 c5 and White's king was stuck in the centre in Reschke­ Meijers, Germany 2000. After 14 l:thc1 c4 1 5 We1 �b6 1 6 'iVd2 0-0 1 7 'iWf4 Wh8 1 8 'iVh4 l:tg8 1 9 Wfl f5 20 'ii'xd8 l:tgxd8 21 �e5 l:txd4 22 �xf7+ <J;;g7 23 Jixb7 'it>xf7 24 i.f3 l::td2 25 l::tab 1 l::tbd8 Black entered the ending

the happier of the two. 9 . . . ii.b7 1 0 'iWc2 c5

1 1 a4

1 1 �c3 I:tc8 transposes to 8 'iWc2 c5 9 0-0 Jib 7 10 �c3 l:tc8.

1 1 .. . ii.xf3?!

The decision to grab material is risky, lead­ ing Keres to suggest 1 1 ...l:tc8 1 2 'i¥b3 'iVb6 1 3 �a3 Jic6 14 �e5 �xe5 1 5 dxe5 4Jd5 with counterplay.

1 2 ii.xf3 cxd4 1 3 axb5 axb5 1 4 .l:!.d 1

1 4 .. . 'iWb6

Other continuations are good for White, e.g. 1 4 ... Jic5 1 5 i.f4 e5 16 Jixe5 4Jxe5 1 7 'ii'xc5, o r 1 4 .. . e 5 1 5 e3! when the opening of the position is to White's benefit.

1 5 ttJd2 e5

In the event of 1 5 ... 4Je5 1 6 �b3 4Jxf3+ 1 7 exf3 White is in the driving seat. If Black tries to hold on to the d4-pawn he can get

into serious trouble, e.g. 1 7 ... l:td8 1 8 4Jxd4! .tIxd4 1 9 l:ta8+ <j;;e7 20 .lte3 and White is winning. 1 5 ... .ltc5 1 6 4Jb3 presents White with compensation.

16 ttJb3 ttJc5?!

Better is 16 ... �e 7 1 7 e3 dxe3 18 �xe3 'iVe6, when 19 4Ja5! earns White compensa­ tion.

1 7 ttJxc5 Jtxc5?

Inviting a brilliant reply. After the more circumspect 1 7 ... 'iNxc5 1 8 .ltc6+ 4Jd7 1 9 'i'xc5 .ltxc5 20 l:ta5 White has only a modest edge.

1 8 naS ! ! 'iVxa6 1 9 'ii'xc5 'ilVe6 20 Jtc6 + 0Jd7

Alekhine gives 20 ... <j;;d8 21 �d2 b4 22 .tIal ! 4Jd7 23 �xd7 'ii'xd7 24 l:ta7 and White is wmrnng.

21 Jtxd7+ �xd7 22 'iVa7 + �cS 23 Jtd2!

Black's king is stranded.

4 . . . dx c 4 5 'iVa 4 +

23 . . J�hc8 24 e4! 'iWb3 25 11a 1 ! b4 26 .!:taS + �b5 27 .!:ta5 + �cS 28 'iVc5+ �d7 29 .!:ta7 + 1 -0 Black is mated.

Game 26

Cu . H ansen-Van Wely

Istanbul 2000

1 d4 d5 2 c4 e6 3 ttJf3 ttJfS 4 g3 dxc4 5 'iVa4+ ttJbd7 S 'iWxc4 as 7 Jtg2 b5 8 'iVc6 .!:tb8 9 Jtf4 ttJd5

011-Morozevich, Groningen 1997 went 9 ... i.b4+!? to 4Jbd2 (to i.d2 i.c5!? is inter­ esting, 1 1 dxc5 .ltb7 1 2 4Je5 .ltxc6 13 tDxc6 "iVc8 14 4Ja7 introducing a draw by repeti-

_ tion) to ... i.b7 1 1 'it'xc7 'iVxc7 12 i.xc7 .tIc8

13 i.f4 l:tc2 when, for the pawn sacrifice, Black has an active position. After 14 0-0 4Jd5 1 5 tDb3! l:txb2 1 6 i.d2 tDc3 17 i.xc3 i.xc3 1 8 l:tfc1 b4 Black was doing well as the game moved into an ending, with the bishop pair and a dangerous queenside majority. Morozcvich evaluates 14 a3 i.xd2+ 15 i.xd2 l:txb2 as unclear.

1 0 Jtg5

1 0 .. . Jte7

Again 1O ... i.b4+?! is possible. After 1 1 tDbd2 4Je7 1 2 .ltxe7 .ltxe7 1 3 l:tc1 White controls the c-file and has the better chances, but this is a lesser evil for Black than the eccentric 12 .. .'itxe7?!, when Smyslov­ S.Polgar, London 1 996 left White better after

1 3 'it'c2 iLb7 1 4 a3 iLxd2+ 1 5 'iixd2 f6 16 l:.c1 nc8 1 7 'iVb4+ c;t>e8 1 8 0-0.

1 1 i.xe7 'i'xe7 1 2 ttJc3 i.b7

12 ... liJb4?! leads to wild complications: 1 3 'it'xc7! liJc2+ 1 4 c;t>dl ! liJxal 1 5 liJe5! 'iVd8! 1 6 'it'xd8+ c;t>xd8 1 7 liJc6+ (better than 1 7 liJxf7+ c;t>e 7 1 8 liJxh8 b4 1 9 liJa4 b 3 and Black is doing fine) 1 7 ... c;t>c7 1 8 liJxb8 and now Monin-Vul, Kecskemet 1 992 went 1 8 ... c;t>xb8 1 9 c;t>d2 liJb6 20 l::txal b4 21 liJdl l:td8, when Black gets his pawn back after 22 e3 e5 but walks into the clever 23 b3 exd4 24 e4 (Vul) with the better prospects for White, whose knight will find a good outpost on d3. Illescas-Onischuk, Wijk aan Zee 1 997 went 1 8 ... liJxb8 1 9 c;t>d2 :d8 20 e3 e5, when Illes­ cas proposes 21 :tc1 with advantage to White, who keeps the extra pawn.

Also interesting is 1 2 ... 'iVb4!? 1 3 0-0 liJxc3 1 4 bxc3 'it'd6 1 5 'it'xd6 cxd6, when the end­ ing is okay for Black. Atalik-Li Wenliang, Beijing 1 996 was agreed drawn after 1 6 a4 bxa4 1 7 l:txa4 c;t>e 7 1 8 l:1fa 1 l::tb2 1 9 e3 iLb 7 20 liJe 1 iLxg2 21 c;t>xg2 l::tc8 22 l:txa6 .l:!.xc3 23 .l:!.6a2 .l:!.xa2 24 lha2.

1 3 ttJxd5 i.xc6 1 4 ttJxe7 <tIxe7

1 5 l:tc 1

1 5 0-0 gives Black the opportunity to launch the c-pawn. Wojtkiewicz-Kaidanov, New York 1 993 is a good example, when

1 5 ... iLxf3 1 6 iLxf3 c 5 1 7 dxc5 liJxc5 1 8 .l:i.fc1 slightly favours White. The bishop is better than the knight, but Black's king is active near the centre. There followed 1 8 ... .l':thc8 1 9 .l:!.c2 liJd7 20 l::tac1 liJb6 21 .l:!.xc8 .l:!.xc8 22 .l:i.xc8 liJxc8 23 iLb 7 liJd6 24 iLxa6 c;t>d7 25 b3 c;t>c6 26 a4 c;t>b6 27 iLxb5 liJxb5 28 axb5 c;t>xb5 29 c;t>g2 c;t>b4 30 �f3 c;t>xb3 with a draw.

1 5 " .i.d5 ! ?

Black also has 15 .. J:tb6 1 6 0-0 .uc8, e.g. 17 liJd2 iLxg2 18 c;t>xg2 c5 1 9 dxc5 �xc5 20 liJb3 l::txc1 21 i:txc1, when the knight is bet­ ter on b3. Thanks to his control of the c-ftle White has the slightly better prospects. Gle­ izerov-Serper, Moscow 1 992 proved less attractive for White after 1 7 liJg5 iLxg2 1 8 c;t>xg2 .l:i.d6!' 1 9 e3?! when, i f he had time for liJe4, he would enjoy a solid advantage. However, 1 9 ... c5 20 dxc5 l:td5! is enough for a small lead for Black.

1 6 l:txc7 l:thc8 1 7 l:ta7

1 7 l:txc8 l::txc8 1 8 c;t>d2 liJf6 and Black controls the light squares in the centre and has compensation for the pawn.

1 7 " .11a8

Also possible is 1 7...l::tc2!? 1 8 0-0 f6, again with compensation.

1 8 l:txa8 i.xa8 1 9 <tId2 ttJf6 20 ttJe 1 20 l:tgl seems too slow. After 20 .. J::tc4 21 liJe5 lhd4+ 22 c;t>e3 J:td8 23 iLxa8 l:txa8 24 .l:!.c1 the idea is to generate activity but Black defends successfully with 24 ... liJd5+. 20" .i.xg2 21 ttJxg2 l:td8 22 e3 ttJe4+ 23 <tIe2 l:tc8

Black is very active.

24 ttJe 1 l:tc 1 25 l:tg 1 f5 26 f3 ttJf6 27 l:tg2

Or 27 c;t>d2 l:tal 28 a3 liJd5 with compensation.

27 " .ttJd5 28 e4 fxe4 29 fxe4 ttJf6 30 ttJd3 l:tc4 31 ttJe5 l:tc2+ 32 <tIf3 l:txg2 33 <tIxg2 ttJxe4 Yz -Y2

4 . . . dx c 4 5 �a 4 +

Summary

After 5 ... c6 6 'it'xc4 b5 7 i*'c2 �b7 8 �g2 lLibd7 the continuation 9 lLie5 is the most interest­ ing available to White, albeit one that offers nothing more than equality. Black has 9 ... lLixe5 1 0 dxe5 lLid5!, closing the dangerous hl -a8 diagonal, but perhaps 9 ... 'iVb6 i s even more precise, attacking the d4-pawn and renewing the threat of ... c6-c5.

There is also another defence that confl11TIs 5 'ifa4+ lacks punch. After 5 ... �d7 6 'iVxc4 .ic6 7 �g2 the game Andersson-Illescas is perhaps the most exact advertisement: 7 ... �d5 8 'l'd3 �e4 9 'iVdl c5 10 lLic3 �c6 etc.

Black can, step by step, equalize in the 5 ... lLibd7 variation. As is demonstrated in Game 24, Black should not fear 6 'iVxc4 a6 7 'iVc2 c5 8 �g2. Actually this is the position from the varia- tion 5 ... c6 6 'it'xc4 b5 7 'iVc2 �b7 8 �g2 lLibd7 with the extra tempo ... a7-a6 (as Black will play ... c6-c5 later in that line, but here do it in one go with ... c7-c5), which is therefore a defi- nite improvement on a position considered fine for Black. It is interesting that the same posi­ tion can occur after the main continuation 8 'i'c6 :tb8 (after 9 0-0 �b7 10 'iVc2 c5). For Black it is enough to play ... :b8-c8, which guarantees him an equal game. Therefore White most often aims to use the position of the queen on c6 for an attack on the weakened c7-square with 9 �f4.

Black can sacrifice a pawn in order to activate his pieces with 9 ... �b4 (Morozevich). In Game 26, Hansen-Van Wely, we see that in the main line after 9 ... lLid5 10 iLg5 �e7 1 1 �xe7 'i'xe7 the chances are approximately even.

1 d4 d5 2 c4 eS 3 liJf3 liJfS 4 g3 dxc4 5 �a4+ liJbd7 5 ... c6 6 'it'xc4 b5 7 'iVc2 �b7 8 �g2 lLibd7

(DJ

9 0-0 -Game 19; 9 lLie5 -Game 20

5 ... �d7 6 'i'xc4

6 ... c5 7 dxc5 �c6 8 �g2 - see Game 76 (Chapter 7)

6...�c6 7 �g2

(DJ

7 ... lLibd7 -Game 2 1 ; 7...�d5 -Game 22

S �xc4 6 �g2 a6 7 lLic3 -Game 23 S . . . aS 7 .i.g2 7 'iVc2 -Game 24 7 . . . b5 8 �cS �b8

(DJ

9 0-0 -Game 25; 9 �f4 -Game 26 8 . . . liJbd7 7 .i.g2 8 . . . �b8

In document BENEMÉRITA UNIVERSIDAD AUTÓNOMA DE PUEBLA (página 68-74)