Author: John Merlino
Date: 16:31:10 07/23/02
Go up one level in this thread
On July 23, 2002 at 18:32:27, Robert Hyatt wrote: >A few years ago, Komputer Korner had a "correspondence kup" match with Crafty, >chessmaster and some other programs, playing a correspondence tournament. In >that match, Crafty found a wild sacrifice to play against Chessmaster, I think >it was Nf6. After searching for 24 hours or whatever the time limit was, Crafty >saw a draw score. And it saw a draw score for the next couple of moves. > >Right after Crafty played that move, Hsu sent me an email saying "brilliant >move". I told him Crafty only saw a draw. He said "let it keep searching... >DB Jr saw +2.5 very quickly." Sure enough, a few moves later Crafty realized >it was not just drawing, it was winning easily. > >I will try to find the game. If anybody has it, perhaps _that_ position will >be a good one to see how long it takes today's programs to find the move and >find it is winning, compared to DB1 back in 1996... > >I will see what I can find... > >I think the event was called "the komputer kup korrespondence tournament" or >something similar... Assuming Pierre's position is correct, Chessmaster 9000, on a PIII-600, finds Nf6+ in 1:16, giving it a drawing score. After 3:15, the score is positive, but nowhere near "winning". Time Depth Score Positions Moves 0:00 1/4 -0.41 11390 19.Bh6 Re6 20.Bg5 Nd4 21.Qd3 0:00 1/5 -0.64 37849 19.Bh6 Re6 20.Be3 Nd4 21.Bxd4 exd4 0:01 1/5 -0.46 67804 19.Bg3 Nd4 20.Qe4 Qb8 21.Rac1 Bf5 0:02 1/6 -0.42 111216 19.Bg3 Nd4 20.Qh5 Be6 21.Bxe5 Bxd5 22.Bxd4 0:04 1/6 -0.37 203824 19.Bh6 Re6 20.Be3 Nd4 21.Bxd4 Bxd4 0:06 1/7 -0.56 341780 19.Bh6 Re6 20.Be3 Nd4 21.Bxd4 exd4 22.Rac1 Re5 0:13 1/7 -0.52 692298 19.Re1 Kh8 20.Nc3 Qc7 21.Bxe5 Rxe5 22.Rxe5 Qxe5 23.Qxc6 0:16 1/7 -0.35 936839 19.Be3 Nd4 20.Bxd4 Bxd4 21.Nf6+ gxf6 22.Bd5 Bxf2+ 23.Qxf2 0:25 1/8 -0.16 1540653 19.Be3 Be6 20.Rac1 Kh8 21.Bxc5 bxc5 22.Rxc5 Nd4 23.Qa3 Rac8 24.Rdc1 Rxc5 25.Rxc5 0:48 1/9 -0.41 3195206 19.Be3 Be6 20.Rac1 Rad8 21.Bxc5 bxc5 22.Rc2 Bxd5 23.Bxd5 e4 1:02 1/9 -0.30 4191467 19.Bh6 Re6 20.Be3 Nd4 21.Bxd4 Bxd4 22.Rac1 e4 23.Qe2 1:16 1/9 0.00 5345593 19.Nf6+ gxf6 20.Bd5 Bd7 21.Bh6 Bf8 22.Qxf6 Re6 23.Bxe6 fxe6 24.Qg5+ Kh8 25.Qf6+ Kg8 1:35 1/10 0.00 6997334 19.Nf6+ gxf6 20.Bd5 Bd7 21.Bh6 Bf8 22.Qxf6 Re6 23.Bxe6 fxe6 24.Qg5+ Kh8 25.Qf6+ Kg8 3:15 2/11 0.27 15441083 19.Nf6+ gxf6 20.Bd5 Bd7 21.Bh6 Bf8 22.Qxf6 Re6 23.Bxe6 Bxe6 24.Ra3 Bxh6 25.Rg3+ Kf8 26.Qxh6+ Ke7 27.Qh4+ f6 28.Qxh7+ Bf7 10:15 3/12 0.36 53030403 19.Nf6+ gxf6 20.Bd5 Bd7 21.Bh6 Bf8 22.Qxf6 Re6 23.Bxe6 Bxe6 24.Ra3 Ne7 25.Bxf8 Rxf8 26.Rg3+ Ng6 27.Qxe5 jm
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