Author: John Merlino
Date: 21:41:39 06/13/03
Go up one level in this thread
On June 13, 2003 at 20:57:07, Hristo wrote: >This was blitz (10 min. for all) game, but even after analyzing the game at 2:15 >per move the engine had no idea of the trouble until it was too late. > >At what move do other programs consider white's position to be dangerous? >How do other programs evaluate 19. ... Bxh2+ ?! > >[Event "?"] >[Site "?"] >[Date "2003.06.13"] >[Round "?"] >[White "Sigma Chess 6"] >[Black "Hristo Doichev"] >[Result "0-1"] >[ECO "A01"] > >1. b3 f5 2. Nf3 Nf6 3. d4 d5 4. e3 e6 5. Bd3 Bd6 6. O-O Nbd7 7. Bb2 h6 8. c4 c6 >9. c5 Bc7 10. Nbd2 Qe7 11. b4 a5 12. Nh4 Nf8 13. bxa5 g5 14. Nhf3 Ng6 15. Nb3 >g4 16. Ne1 h5 17. Bc3 Kf7 18. Qc2 h4 19. Rb1 Bxh2+ 20. Kxh2 g3+ 21. Kh3 Bd7 22. >f3 Rag8 23. Nc1 Nh7 24. f4 Qg5 25. Qd1 e5 26. Be2 exf4 27. Bh5 Qg4+ 28. Qxg4 >fxg4+ 29. Bxg4 Ng5# 0-1 > >Regards, >Hristo Although White is probably already losing by this time, Chessmaster 9000 says that 21.Kh3 is a terrible move, and by far the worst choice of the four legal moves. As a matter of fact, after 21.Kh3, CM9000 needs only nine seconds (on a dual P3-450) to see that Black has a forced mate in 8 with 21...Ne4: Time Depth Score Positions Moves 0:00 1/3 1.94 1166 21...Ng4 22.f4 Nxe3 0:00 1/4 1.62 5281 21...Ng4 22.Nf3 Nxf2+ 23.Rxf2 gxf2 24.Qxf2 Qc7 0:00 1/5 1.41 22588 21...Ng4 22.Nf3 Nxf2+ 23.Rxf2 gxf2 24.Qxf2 Qc7 25.Ne5+ Nxe5 26.dxe5 0:03 1/6 1.50 125234 21...Ng4 22.Nf3 Nxf2+ 23.Rxf2 gxf2 24.Qxf2 Qc7 25.Ne5+ Nxe5 26.dxe5 Qe7 27.Kh2 0:07 1/6 0.91 319843 21...e5 22.f4 Ne4 23.Nf3 exf4 24.Bd2 Nxd2 25.Qxd2 fxe3 0:08 1/6 -5.34 381284 21...Ne4 22.Bxe4 Nf4+ 23.exf4 fxe4 24.f5 Qg5 25.Qe2 exf5 26.Qh5+ Qxh5 27.f3 exf3 28.gxf3 0:09 1/7 -Mate08 410913 21...Ne4 22.Bxe4 Nf4+ 23.exf4 fxe4 24.Qe2 e5+ 25.f5 Bxf5+ 26.Qg4 Bxg4+ 27.Kxg4 Qe6+ 28.Kg5 Qg6# 0:12 1/8 -Mate08 632428 21...Ne4 22.Bxe4 Nf4+ 23.exf4 fxe4 24.Qe2 e5+ 25.f5 Bxf5+ 26.Qg4 Bxg4+ 27.Kxg4 Qe6+ 28.Kg5 Qg6# 0:18 1/9 -Mate08 1124972 21...Ne4 22.Bxe4 Nf4+ 23.exf4 fxe4 24.Qe2 e5+ 25.f5 Bxf5+ 26.Qg4 Bxg4+ 27.Kxg4 Qe6+ 28.Kg5 Qg6# CM9000 does not evaluate 19...Bxh2 very highly, and prefers 19...Ne4. jm
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