M

Waiting for Black to show her hand White would be left with weak pawns on c3 and d3 after 10 exd57i £ixd5, which also frees Black's position unnecessarily

11 dxe4 fd3

Apparently winning a pawn but White has seen a little further

13 £txe4 Wxe4

White regains his pawn by unleashing his king's bishop

16 iixcb 2b8

17 Sel #xdl

Black has a couple of vulnerable points on a7 and c5 which leave her struggling for a draw At the moment White cannot make the capture b4xc5 because of the pin on the b-file However. White should be able to build up enough pressure on the c-pawn to force c5xb4, when the reply axb4 will allow him to attack the a-pawn along both the a-file and the gl-a7 diagonal

The immediate threat, then, is 19 2d5, so Black temporarily prevents this while simultaneously clearing the way for a rook to come to the c-file

19 Ad5 Axd5

20 2xd5 2lc8

Maintaining the pin on the b-file and thus preserving his c-pawn

21 2e2 2b7

White has rendered the pin useless by defending his bishop, but it is still not possible for him to win a pawn because of 22 2xc5 2xc5 23 bxc5 2c 7 Also 22 Ac I cxb4 23 axb4 h6< (not 23 2xc3^ 24 Sd8+ Af8 25 Ah6) steers White's attention to the defence of his c-pawn and away from Ae3 Consequently White activates his king Note that Black has problems in utilising her 4-3 kingside pawn majority because White is better placed to react

22 Af6

25 Se4

White prepares to transfer another rook to attack the enemy c-pawn

Anticipating 26 2c4 which would now be met by 26 cxb4

26 &c2 cxb4

Since this would have to be played anyway during the next couple of moves Madl makes the capture at her own convenience

27 axb4 £e7 Black hopes for 28 fidxeS &xb4

with instant equality

White has played quite adeptly since the last diagram, making great progress thanks to the king's march to the queenside His next step towards victory is to exchange off the black defenders and thus simplify the winning process (queening a pawn)

29 Bc4 *I7

30 Hxc7 Bxc7

With his king shepherding the queenside pawns it is now possible to redeploy the bishop and attack ihe black a-pawn

32 Ba5 IfS

The a-pawn is lost and White is about to have two connected passed pawns Black belatedly hopes for a passed pawn of her own, bu» her position is resignable

34 Exa7 Bxa7

35 Jixa7 f5

White's bishop defends f2 and e3 and he threatens simply to push his c-pawn Black is much too slow in the race for promotion (note that after 36 <£0 37 c5 <&xf2 is even out of the question due to 38 c6+) Remember that Black more or less forced the ending herself by underestimating the power of White's 3-2 pawn majority on the queenside

The question ol move order is interesting here In the game Yudasin-Mascarinas mentioned in the note to White's ninth move, White played for queenside expansion with a2-a3 only after the moves Bel and Ee8 had been interpolated (White actually played 7 Bel) Loginov's decision to dispense with (he perhaps stereotyped rook move has the advantage of tempting the natural but evidently inadequate response of d7-d5xe4 and ffd8-d3

Psakhis-Erdelyi

Lenk 1991 '

I e4 c5 2 ftO e6 3 d3 £)c6 4 g3 g6 5 Ag2 Ag7 6 0-0 £>ge7 7 Bel d6 8 c3 eS 9 a3 a5

A theoretical novelty Usually, as we have hitherto seen. Black gets on with his own plans and allows White his queenside initiative With a7-a5 Black gives the game a closed nature, but White can use the self-inflicted weakness on b5 as a home tor his queen's knight, even if it costs a tempo 10 a4 h6

II £ia3 g5?! This is quite an ambitious pattern of development, if not a very good one, and readers should be aware of such a possibility when Black has not castled Preferable is 11 0-0 12 £id2' ii.e6 13 £)dc4 when White stands slightly better

How if 13 0-0, 14 £k:4 rounds up the black d-pawn, which Black's next is designed to protect

15 d4' also confers White a big advantage GM Psakhis opts to keep the central thrust in reserve until he has managed to neutralise the poten-iially powerful black king's bishop

16 cxb4 cxb4

18 ix b4

White has succeeded in opening up the queenside, after all Meanwhile Black's forces have migrated 'o the kingside and are sorely missed, and his d-pawn is a weakness which needs defending (18 d5 19£kd6+)

„ IS £.xc4 19 dxc4 opens the d-in White's favour

The GM emphasises the folly of jack's opening idea by heading for f5 which would usually be covered by a black g6-pawn

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