Author: Moritz Berger
Date: 12:05:30 05/31/98
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On May 31, 1998 at 12:55:29, Dirk Frickenschmidt wrote: >Hi all of you, > >We all know how good chess programs on fast hardware have become. >The more I am fascinated to see GM positions which seem still to be >beyond their understanding. > >One prominent example is a position from Kasparov-Gelfand, >Amsterdam 1996. > >Here's the critical variation in FEN-format: > >r1b1r1k1/1p1nbp1p/1q1p2pB/p7/Pn1NP1P1/2N2B2/1PP4P/R2Q1R1K w - - 0 17 I let Shredder 2 ponder for 2 hours only on the critical move: (Be3 with +0.31 eval was Shredder's choice after a few seconds at 9ply in unrestricted search mode) analysing Nd4-f5 ... 11 -> 0:40.19 -1.70 Nf5 gxf5 gxf5 Kh8 Rg1 Bf6 Bh5 Ne5 Qe2 Qc6 (2.113.211) 12 -> 2:14.54 -1.59 Nf5 gxf5 gxf5 Bf6 Nb5 Ne5 Qxd6 Qxd6 Nxd6 Rd8 Rg1+ Kh8 Rad1 Nxc2 (6.903.862) 13.01 6:34.98 -1.34++ Nf5 (18.910.750) 13 -> 13:00.56 -1.02 Nf5 gxf5 gxf5 Kh8 Rg1 Bf8 Qd2 Bxh6 Qxh6 Qc5 Nd5 Re5 (36.799.712) 14 -> 24:02.02 -1.15 Nf5 gxf5 gxf5 Bf6 Rg1+ Kh8 Qd2 Qd8 Nb5 d5 c3 dxe4 Nd6 (67.611.583) 15.01 48:07.97 -0.90++ Nf5 (134.841.294) 15 -> 88:16.55 -0.54 Nf5 gxf5 gxf5 Kh8 Rg1 Bf8 Qd2 Bxh6 Qxh6 Qc5 Nd5 Rg8 Rxg8+ Kxg8 Nxb4 axb4 f6 (246.075.486) >Here's the complete game with rich CBM annotations by >Bönsch/Dokhoian/Romero/Tischbierek: >(some special characters originate from Chessbase fonts) > >Kasparov - Gelfand [B92] >Amsterdam, 1996 ... > >critical position: > >17.Sf5!? Forcing matters 17...gxf5 18.gxf5 Lf6? [18...Kh8! 19.Tg1 Lf8 >(19...Tg8? 20.Txg8+ Kxg8 21.Dg1+! Dxg1+ 22.Txg1+ Kh8 23.Lh5 Se5 24.Lg7+ >Kg8 25.Lxe5+ Kf8 26.Lf4 Sxc2 27.Sd5+-) 20.Dd2 d5 (20...Sc6? 21.Dg5 Lxh6 >22.Dxh6 Dd4 23.e5! Dxe5 24.Tae1+-; 20...Dd8!? 21.Lg5!?©) A) 21.Lxf8 Txf8 >22.e5 Dc7 (22...Sxe5 23.Dg5 Sg6 24.fxg6 fxg6 25.Sxd5 Sxd5 26.Lxd5 Dxb2 >27.Tae1©) ; B) 21.Le3 21...Lc5 22.Lxc5 Dxc5 23.exd5 (23.f6 Dd6 24.e5 >Txe5 25.Dg2 Df8-+) B1) 23...De3 24.Dg2 Dh6 B1a) 25.Tae1 Dokhoian >25...Tf8 26.Se4 Sf6 27.Sd6 Ta6 28.Dg3 Sxc2 29.Te4 Txd6 (29...Sxe4 >30.Sxf7+) 30.Dxd6 Sg4 31.Dg3 Sge3 32.De5+ f6 33.Dc7 Sxd5 34.Dg3±; B1b) >25.Tae1© ; >B2) 23...Se5? 24.Dh6+-; B3) 23...Ta6
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