Author: John Merlino
Date: 15:26:55 05/17/02
Go up one level in this thread
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. Here is the output from Chessmaster 9000 (Beta version on a PIII-600): Time Depth Score Positions Moves 0:00 1/3 -0.09 1663 1...Ng4 2.Bxe4 Nxh6 3.Nc4 0:00 1/4 -0.22 7667 1...Ng4 2.Bxe4 Nxh6 3.Nc4 Bc7 0:00 2/5 -0.10 14970 1...Ng4 2.Bxe4 Nxh6 3.Nc4 Bc7 4.Bg2 0:01 2/6 -0.11 48451 1...Ng4 2.Nxg4 Qxg4 3.Nf4 Ng5 4.Rd3 Bxf4 5.gxf4 0:02 3/7 0.00 152826 1...Ng4 2.Nxg4 Qxg4 3.Nf4 Bxf4 4.Bxf4 Rxd5 5.Rxd5 Bxd5 6.Re1 0:07 3/8 0.06 443641 1...Ng4 2.Nxg4 Qxg4 3.Nf4 Ng5 4.h3 Nf3+ 5.Kh1 b3 6.Qxb3 0:12 3/8 0.00 812853 1...Nxf2 2.Kxf2 Rxe3 3.Bxe3 Ng4+ 4.Kf3 Nxh2+ 5.Kf2 Ng4+ 6.Kf3 Nh2+ 0:43 4/9 0.00 3006895 1...Nxf2 2.Kxf2 Rxe3 3.Bxe3 Ng4+ 4.Kf3 Nxh2+ 5.Kf2 Ng4+ 6.Kf3 Nh2+ 0:53 4/9 -0.08 3660309 1...Ng4 2.Bxe4 Nxh6 3.Bg2 Ng4 4.Nc4 Nf6 5.Nxd6 Qxd6 6.Nf4 1:40 4/10 0.02 6705168 1...Ng4 2.Nxg4 Qxg4 3.Nf4 Qf5 4.Rac1 Bxf4 5.Bxf4 Rxd5 6.h4 Rxd1+ 7.Rxd1 Bd5 2:46 4/10 -0.34 11668561 1...Nxf2 2.Kxf2 Rxe3 3.Bxe3 Ng4+ 4.Kf3 Nxh2+ 5.Kf2 Ng4+ 6.Kf3 Qe6 7.Bf4 Bxd5+ 8.Rxd5 Qxd5+ 9.Qe4 Qxe4+ 10.Kxe4 f5+ 11.Kf3 Be5 12.Ng1 Bxb2 13.Re1 jm
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