Author: John Merlino
Date: 11:07:46 06/26/02
Go up one level in this thread
On June 26, 2002 at 13:46:03, Andrew Williams wrote: >Here's a position where postmodernist made a foolish mistake and got squashed by >crafty: > >[D]3R4/5k2/1p1p4/1NbP2pp/2P3P1/P7/5rKP/8 w - - am Kg3 Chessmaster 9000 needs 7 seconds on a PIII-600 to choose Kh3: Time Depth Score Positions Moves 0:00 1/3 0.00 665 1.Kg3 h4+ 2.Kh3 Rf3+ 3.Kg2 Rf2+ 4.Kh3 0:00 1/4 0.00 1239 1.Kg3 h4+ 2.Kh3 Rf3+ 3.Kg2 Rf2+ 4.Kh3 0:00 1/5 0.00 3003 1.Kg3 h4+ 2.Kh3 Rf3+ 3.Kg2 Rf2+ 4.Kh3 0:00 1/6 0.00 6178 1.Kg3 h4+ 2.Kh3 Rf3+ 3.Kg2 Rf2+ 4.Kh3 0:00 1/7 0.00 14450 1.Kg3 h4+ 2.Kh3 Rf3+ 3.Kg2 Rf2+ 4.Kh3 0:01 2/8 0.00 80608 1.Kg3 h4+ 2.Kh3 Rf3+ 3.Kg2 Rf2+ 4.Kh3 0:07 3/9 -2.74 511726 1.Kg3 h4+ 2.Kh3 Ra2 3.Nxd6+ Ke7 4.Re8+ Kxd6 5.Re1 Rxa3+ 6.Kg2 h3+ 7.Kh1 Re3 8.Rd1 Bd4 0:07 3/9 0.00 568408 1.Kh3 Rf3+ 2.Kg2 Rf2+ 0:10 4/10 0.00 798991 1.Kh3 Rf3+ 2.Kg2 Rf2+ >PostModernist takes 13 seconds to latch onto Kh3 on my Athlon 1200, but it >didn't have enough time in this short game. How long does it take your engine to >see that Kh3 is better? Furthermore, after making the losing error, how long >does it take your program to find that Black will win: > >[D]3R4/5k2/1p1p4/1NbP2pp/2P3P1/P5K1/5r1P/8 b - - 0 1 bm h4 After forcing Kg3, it sees the win for Black in 6 seconds, although it would choose "the right move" immediately: Time Depth Score Positions Moves 0:00 1/3 0.00 1911 1...h4+ 2.Kh3 Rf3+ 3.Kg2 Rf2+ 4.Kh3 0:00 1/4 0.00 3286 1...h4+ 2.Kh3 Rf3+ 3.Kg2 Rf2+ 4.Kh3 0:00 1/5 0.00 6491 1...h4+ 2.Kh3 Rf3+ 3.Kg2 Rf2+ 4.Kh3 0:00 1/6 0.00 13268 1...h4+ 2.Kh3 Rf3+ 3.Kg2 Rf2+ 4.Kh3 0:01 1/7 0.00 55971 1...h4+ 2.Kh3 Rf3+ 3.Kg2 Rf2+ 4.Kh3 0:06 2/8 -3.94 433752 1...h4+ 2.Kh3 Rc2 3.Nxd6+ Ke7 4.Re8+ Kxd6 5.Re6+ Kd7 6.Re1 Rc3+ 7.Kg2 Rxc4 8.Re5 Rxg4+ 9.Kf3 0:09 3/9 -4.34 762678 1...h4+ 2.Kh3 Rc2 3.Nxd6+ Ke7 4.Re8+ Kxd6 5.Re6+ Kc7 6.Re1 Bd6 7.Rh1 Rc3+ 8.Kg2 h3+ 9.Kf2 Rxc4 10.Re1 Rc2+ 11.Kf3 Bxh2 0:19 4/10 -4.43 1746605 1...h4+ 2.Kh3 Rc2 3.Nxd6+ Ke7 4.Re8+ Kxd6 5.Re1 Rxc4 6.Re8 Kxd5 7.Rg8 Rc3+ 8.Kg2 Rc2+ 9.Kh3 Be7 10.a4 0:41 5/11 -4.66 4047208 1...h4+ 2.Kh3 Rc2 3.Nxd6+ Ke7 4.Re8+ Kd7 5.Re1 Bxd6 6.Rh1 Bxa3 7.c5 Bxc5 8.Rf1 b5 9.Rf7+ Kd6 1:38 6/12 -5.40 10610598 1...h4+ 2.Kh3 Rc2 3.Nxd6+ Ke7 4.Re8+ Kd7 5.Re1 Bxd6 6.Rh1 Bxa3 7.c5 Rc3+ 8.Kg2 h3+ 9.Kf2 Bxc5+ 10.Ke2 Re3+ 11.Kd2 Re5 12.Rf1 Rxd5+ 13.Kc2 jm
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