Author: ALI MIRAFZALI
Date: 13:34:33 05/17/02
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On May 17, 2002 at 16:28:22, Roy Eassa wrote: >On May 17, 2002 at 15:58:53, ALI MIRAFZALI wrote: > >>The following position happened in the game GM Cifuentes vs IM Zvjaginsev >>(1995) >>[D]3rr1k1/1b1q1p1p/p2b1npB/2pP4/1p2n3/4N1P1/PPQ1NPBP/R2R2K1 b >>here the GM resigned after 24...Nxf2!! 25.Kxf2 Rxe3!! 26.Bxe3 Ng4+ 27.Kf3 Nxh2+ >>28.Kf2 Ng4+ 29.Kf3 Qe6! 30.Bf4 Re8! 31.Qc4 Qe3! 32.Bxe3 Rxe3+ 33.Kxg4 Bc8! >>34.Kg5 h6+! 35.Kxh6 Re5! >>There are many alternative defences all of which fail .On a 700 MHz PC >>it takes CM8000 3 minutes and one second to see the two peice sacrafice. >>Time:3:01 Depth :10 Score :0.34 Positions:13571609 >>Moves:Nxf2 Kxf2 Rxe3 Bxe3 Ng4+ Kf3 Nxh2+ Kf2 Ng4+ Kf3 Qe6 Bf4 Bxd5+ >>Really CM considers this at ply 8 then changes its mind to Ng4 at ply9 and >>finally finds 24...Nxf2!! at ply 10 at 3:01 and stickes to it. >>Many programs have a hard time finding this for example my program Hiarcs 3 >>(from 1994) does not see this after even a very long think.My guess is that >>the chessbase programs wont do good in this position.Please indicate your >>result. > > >Some analysis: > >1...Nxf2! 2.Kxf2 Rxe3 3.Bxe3? > > [3.Kxe3 Ng4+ 4.Kd2 Nxh6 5.Kc1 Qe7 =+] > >3...Ng4+ 4.Kf3 Nxh2+ 5.Kf2 Ng4+ 6.Kf3 Qe6 7.Bf4 > > [7.Bc1 h5! 8.Nf4 > (8.Qe4 Qxe4+ 9.Kxe4 Nf2+ -+) > 8...Bxf4 9.gxf4 Rxd5 10.Kg3 h4+ 11.Kxh4 Ne3-+] > > [7.Bg5 f5 8.Qd3 c4 9.Qd4 > (9.Qxc4 Bf4! 10.Bxf4 Rxd5 mates) > 9...Bc5! 10.Nf4 > (10.Qxc5? Qe4 is mate) > 10...Bxd5+ 11.Nxd5 Rxd5 -+] > >7...Re8 8.Qc4 Qe3+! forces mate: 9.Bxe3 Rxe3+ 10.Kxg4 Bc8+ 11.Kg5 h6+ 12.Kxh6 >Re5 and mate next Roy what program are you useing?
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