Author: Ricardo Gibert
Date: 03:41:33 11/03/03
Go up one level in this thread
[snip] > >In the same vein, the following position has always been a nightmare for Tiger: > >[D]8/1KP5/3q2k1/8/6p1/8/8/8 b - - > >This position comes from a real game between the Modular Game System Sargon 2.5 >and Mike III, played in September 1980 during the Personal Computer World Fair. >Mike III continued the game with a long series of checks leading to a draw. > >Chess Tiger is not smarter than Mike III here. It is something that I had fixed >in the 16 bits version, to the expense of some added complexity in the passed >pawns evaluation code. I have not transfered this code to the 32 bits version >because it was not general enough (add another black pawn and the code did not >work). > >I am interested in results of other (amateur and commercial) programs. > > > > Christophe At depth 2 and onward, Ruffian sees that it must trade its Q. Even when it switches away from 1.Qxc7 to 1.Qd5 at depth 8, it consistently follows up by the trade in its PV. Ruffian understands this position without breaking a sweat: Using an 800mhz Athlon with 32Mb Hash Ruffian_101 UCI: D1 00:00 3.18 g4g3 c7c8Q D1 00:00 7.71 Qd6e7 D1 00:00 7.92 Qd6d5 Kb7b8 D1 00:00 8.18 Qd6b4 Kb7c6 D2 00:00 8.18 Qd6b4 Kb7c6 Qb4f8 D2 00:00 8.52 Qd6d5 Kb7b6 Qd5f5 D2 00:00 8.89 Qd6xc7 Kb7xc7 g4g3 D3 00:00 8.69 Qd6xc7 Kb7xc7 g4g3 Kc7d6 D4 00:00 9.30 Qd6xc7 Kb7xc7 g4g3 Kc7d6 g3g2 Kd6e5 g2g1Q D5 00:00 9.30 Qd6xc7 Kb7xc7 g4g3 Kc7d6 g3g2 Kd6e5 g2g1Q D6 00:00 9.90 Qd6xc7 Kb7xc7 g4g3 Kc7d6 Kg6f5 Kd6d7 g3g2 Kd7e7 g2g1Q D7 00:00 9.90 Qd6xc7 Kb7xc7 g4g3 Kc7d6 Kg6f5 Kd6d7 g3g2 Kd7e7 g2g1Q D8 00:00 9.80 Qd6xc7 Kb7xc7 g4g3 Kc7d6 Kg6f5 Kd6c5 Kf5e5 Kc5c4 g3g2 Kc4d3 g2g1Q D8 00:00 9.98 Qd6d5 Kb7b6 Qd5e6 Kb6b7 g4g3 c7c8Q Qe6xc8 Kb7xc8 g3g2 Kc8d7 Kg6f6 Kd7d6 Kf6f5 Kd6d5 Kf5f4 Kd5e6 D9 00:00 10.00 Qd6d5 Kb7b6 Qd5e6 Kb6b7 g4g3 c7c8Q Qe6xc8 Kb7xc8 Kg6f5 Kc8d8 g3g2 Kd8d7 Kf5e5 Kd7e7 g2g1Q D10 00:00 10.00 Qd6d5 Kb7b6 Qd5e6 Kb6b7 g4g3 c7c8Q Qe6xc8 Kb7xc8 Kg6f5 Kc8d7 Kf5e5 Kd7e7 g3g2 Ke7d7 g2g1Q D11 00:01 10.00 Qd6d5 Kb7a7 Qd5e6 Ka7b8 g4g3 c7c8Q Qe6xc8 Kb8xc8 Kg6f5 Kc8d7 Kf5e5 Kd7e7 g3g2 Ke7d7 g2g1Q D12 00:02 10.00 Qd6d5 Kb7a7 Qd5e6 Ka7b8 g4g3 c7c8Q Qe6xc8 Kb8xc8 Kg6f5 Kc8d7 Kf5e5 Kd7e7 g3g2 Ke7d7 Ke5d5 D13 00:07 10.00 Qd6d5 Kb7a7 Qd5e6 Ka7b8 g4g3 c7c8Q Qe6xc8 Kb8xc8 Kg6f5 Kc8d7 Kf5e5 Kd7e7 g3g2 Ke7d7 Ke5d5 Kd7e7 g2g1Q D14 00:16 10.00 Qd6d5 Kb7a7 Qd5e6 Ka7b8 g4g3 c7c8Q Qe6xc8 Kb8xc8 Kg6f5 Kc8d7 Kf5e5 Kd7e7 g3g2 Ke7d7 Ke5d5 Kd7e7 g2g1Q D14 00:16 10.14 Qd6xc7 Kb7xc7 g4g3 Kc7d6 Kg6f5 Kd6c5 Kf5e5 Kc5c4 g3g2 Kc4d3 g2g1Q Kd3d2 Qg1d4 Kd2c2 Qd4e3 Kc2b2 Ke5d4 D15 00:21 10.14 Qd6xc7 Kb7xc7 g4g3 Kc7d6 Kg6f5 Kd6c5 Kf5e5 Kc5c4 g3g2 Kc4d3 g2g1Q Kd3e2 Qg1g4 Ke2e1 Qg4e4 Ke1f2 Ke5d4 Kf2g3 D16 00:34 10.14 Qd6xc7 Kb7xc7 g4g3 Kc7d6 Kg6f5 Kd6c5 Kf5e5 Kc5c4 g3g2 Kc4d3 g2g1Q Kd3c3 Qg1d4 Kc3c2 Ke5e4 Kc2b3 Ke4e3 Kb3c2 D17 00:56 10.24 Qd6xc7 Kb7xc7 g4g3 Kc7d6 Kg6f5 Kd6c5 Kf5e5 Kc5c4 g3g2 Kc4d3 g2g1Q Kd3c3 Qg1d4 Kc3c2 Ke5e4 Kc2b3 Ke4e3 Kb3c2 Qd4c4 Kc2d1 D18 01:48 10.24 Qd6xc7 Kb7xc7 g4g3 Kc7d6 Kg6f5 Kd6c5 Kf5e5 Kc5c4 g3g2 Kc4d3 g2g1Q Kd3c3 Qg1d4 Kc3c2 Ke5e4 Kc2b3 Ke4e3 Kb3c2 Qd4c4 Kc2b2 Qc4d5 Kb2c3
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.