King 's I n dian A ttack with o u t . . . d5 (as played in Zhang Zhong-M.Kobalija, Ubeda 2001; instead the 14.. .'iVf8 of V.lordachescu-R.Djurhuus, Yerevan Olym piad 1996, prepares an exchange sacrifice and the most sensible response appears to be 15 h 3 , so that 15 ... l::i:f4? ! 16 .ixf4 'ifxf4 17 lbe2 is nothing to worry about) 15 l::i: e 1 .id7 16 'ifd2 lbc8 17 il.f4 lZ'lb6 18 b3 leaves White in control of the dark squares. b2) 12 .. .fxe5 ! ? was an interesting piece sacrifice tried in A.Diamant-F.Larcheveque, Calvi 2010, but White should retain the ad vantage with correct play: 13 gxf5 e4 14 lZ'le5 ! l::i:xf5 (the alternative 14 ... lbxe5 1 5 dxe5 l::i:xf5 - 1 5. . .gxf5 16 .if4 blocks Black's pawn diamond - 16 .ixe4 leaves Black with insufficient compensation for the piece) 15 f4! and White keeps well on top of the posi tion. 11 l::i:e1
11 fxes Black must do something quickly. If White gets enough time to develop all his pieces then he will be better with the greater space and the safer king. Thus Black has to target White's centre immediately. 11 ... lZ'lf5 has been the alternative treat ment, hitting the other pawn, and after 12 lbc3 Black has tried: a) 12 .. .fxe5 13 dxe5 h6 14 h4! transposes ...
to note 'a' to Black's 12th move in our main game. b) 12 ....id7 13 g4 lZ'lfe7 14 exf6 l::i:xf6 was I.Glek-K.Landa, German League 2000, and now I quite like playing quietly with 1 5 .ie3 'iff8 16 h3, just consolidating on the king side so that Black has no annoying sacri fices before we start pressing on the queen side. White should be better here so long as we don't allow the break ... e6-e5, as Black's position is rather constricted. c) 12 ... 'it>h8 (Black plays his king to safety before opening up the position) 13 g4! (forcing a concession out of Black) 13 ...lZ'lh4! ? (an interesting piece sacrifice; evidently 13 ...lZ'lfe7 didn't appeal as 14 exf6 l::i:xf6 1 5 .ig 5 would leave White with the upper hand, since he has successfully de veloped all his pieces while Black has been l eft with a backward e-pawn and a bad bishop on c8 - note too that the pawn on g4 is useful to control f5 and it seems that Black has no way to exploit it) 14 lZ'lxh4 fxe5 and then: c1) 1 5 lbxg6+!? (Vescovi sacrifices the piece back to open up Black's king) 1 5 ...hxg6 16 dxe5 tt:Jxe5 was G.Vescovi A.Volokitin, Bermuda 2005, when, as Vescovi himself pointed out, he should have tried 17 l::i:e 3 'it>g8 18 l::i:g 3 followed by .ie3d4 with an extremely complicated position. Black has the centre but also a rather vul nerable king and so White has reasonable chances. c2) White could also keep the extra piece with 15 g5 when 15 ...exd4 (15 ...lbxd4 16 lbe2 looks quite good for White) 16 lZ'le2 e5 leaves Black with a big centre, but White does have that extra piece and can try play ing around the pawn mass: for example, 17 'iWh3 e4 18 lZ'lf4 lZ'le7 19 iLd2 when the extra material shouldn't be underestimated. 12 dxes
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