Author: Jouni Uski
Date: 09:28:14 05/23/05
When playing match between Gandalf and Spike I saw there was in 2/14 = 14% of games wrong colour bishop ending. Of course it was Spike who thinks it's winning. But it's no shame, when both positions are also beyond Shredder9 knowledge... I think this is the most important ending for engines to handle with TBs or knowledge. First position: [D]1b6/1P6/4k3/8/8/7p/5K2/8 w - - Analysis by Shredder 9 UCI: 76.Kg1 = (0.00) Depth: 1/1 00:00:00 76.Kg1 = (0.00) Depth: 1/1 00:00:00 76.Kg1 Kd6 = (0.00) Depth: 2/4 00:00:00 76.Kg1 Kd6 77.Kh2 = (0.00) Depth: 3/7 00:00:00 76.Kg1 Kd6 77.Kh1 Kc6 = (0.00) Depth: 4/8 00:00:00 76.Kg1 Ba7+ 77.Kh2 Bb8+ 78.Kxh3 = (-0.01) Depth: 5/8 00:00:00 76.Kg1 Ba7+ 77.Kh2 Bb8+ 78.Kxh3 = (-0.01) Depth: 6/8 00:00:00 76.Kg1 Kd6 77.Kh2 Kc6+ = (-0.02) Depth: 7/8 00:00:00 1kN 76.Kg1 Kd6 ³ (-0.27) Depth: 8/10 00:00:00 2kN 76.Kg1 Kd6 -+ (-4.67) Depth: 8/10 00:00:00 2kN 76.Kg1 Kd7 77.Kf2 Kc6 78.Kg1 -+ (-4.67) Depth: 8/10 00:00:00 3kN 76.Kf1 -+ (-4.66) Depth: 8/10 00:00:00 5kN 76.Kf1 Kd6 77.Kg1 -+ (-4.66) Depth: 8/10 00:00:00 5kN 76.Kf1 Kd7 77.Kg1 Kc6 -+ (-4.68) Depth: 9/10 00:00:00 7kN 76.Kf1 Kd6 77.Kg1 Kd5 78.Kf1 Kc6 79.Kg1 Kd7 80.Kf2 -+ (-4.68) Depth: 10/11 00:00:00 10kN 76.Kf1 Kd6 77.Kg1 Kd5 78.Kf1 Kc6 79.Kg1 Kd7 -+ (-4.68) Depth: 11/11 00:00:00 14kN 76.Kf1 Kd6 77.Kg1 Kd5 78.Kf1 Kc6 79.Kg1 Kd7 80.Kh1 Kc6 -+ (-4.68) Depth: 12/12 00:00:00 20kN 76.Kf1 Kd6 77.Kg1 Kd5 78.Kf1 Kc6 79.Kg1 Kd5 80.Kf1 Kc6 81.Kg1 Kd5 -+ (-4.68) Depth: 13/13 00:00:00 29kN 76.Kf1 Kd6 77.Kg1 Kd5 78.Kf1 Kc6 79.Kg1 Kd7 -+ (-4.68) Depth: 14/14 00:00:00 39kN 76.Kf1 Kd6 77.Kg1 Kc5 78.Kh1 Kc6 -+ (-4.69) Depth: 15/15 00:00:01 75kN 76.Kf1 Kd6 77.Kg1 Kd5 78.Kf1 h2 -+ (-4.70) Depth: 16/16 00:00:01 111kN 76.Kf1 Kd6 77.Kg1 Kc5 78.Kh1 h2 -+ (-4.71) Depth: 17/25 00:00:01 169kN 76.Kf1 Kd6 77.Kf2 Kd5 78.Kg1 Kc5 79.Kf1 Kc6 80.Kg1 -+ (-4.70) Depth: 18/27 00:00:01 253kN 76.Kf1 Kd6 77.Kf2 Kd5 78.Kf1 Kc6 79.Kg1 -+ (-4.69) Depth: 19/28 00:00:01 394kN 76.Kf1 Kd6 77.Kf2 Kd5 78.Kf1 Kc6 79.Kg1 Kc5 80.Kf1 Kc6 81.Kg1 Kc5 82.Kf1 Kc6 -+ (-4.70) Depth: 20/30 00:00:01 581kN 76.Kg1 -+ (-4.69) Depth: 20/37 00:00:02 747kN 76.Kg1 Kd7 77.Kh1 Kc6 78.Kg1 Kc5 79.Kh1 -+ (-4.69) Depth: 20/37 00:00:02 754kN 76.Kg1 Kd7 77.Kh1 Kc6 78.Kg1 Kc5 79.Kh1 Kc6 80.Kg1 Kc5 81.Kh1 Kc6 -+ (-4.70) Depth: 21/39 00:00:02 1015kN 76.Kg1 Kd7 77.Kh1 Kc6 78.Kg1 Kc5 79.Kh1 Kd5 80.Kg1 -+ (-4.69) Depth: 22/42 00:00:05 2422kN 76.Kg1 Kd7 77.Kh1 Kc6 78.Kg1 Kc5 79.Kh1 Kd5 80.Kg1 Kc5 81.Kh1 Kd5 82.Kg1 Kc5 -+ (-4.69) Depth: 23/44 00:00:07 3485kN Second position: [D]8/2K5/5k1P/8/8/8/1p6/1B6 b - - Analysis by Shredder 9 UCI: 73...Kf7 +- (6.39) Depth: 1/1 00:00:00 73...Kf7 +- (6.39) Depth: 1/1 00:00:00 73...Kf7 74.Kd6 +- (6.46) Depth: 2/4 00:00:00 73...Kf7 74.Kd6 +- (6.21) Depth: 3/6 00:00:00 73...Kf7 74.Kd6 +- (5.65) Depth: 3/6 00:00:00 73...Kf7 74.Bh7 Kf6 +- (4.52) Depth: 3/6 00:00:00 73...Kf7 74.Bh7 +- (4.27) Depth: 4/9 00:00:00 73...Kf7 74.Bh7 +- (3.77) Depth: 4/9 00:00:00 73...Kf7 74.h7 Kg7 75.h8Q+ Kxh8 76.Kd6 ² (0.26) Depth: 4/9 00:00:00 73...Kf7 74.h7 = (0.01) Depth: 5/9 00:00:00 73...Kf7 74.h7 Kg7 75.h8Q+ Kxh8 = (0.01) Depth: 5/9 00:00:00 73...Kf7 74.h7 Kg7 75.h8Q+ Kxh8 = (0.01) Depth: 6/9 00:00:00 1kN 73...Kf7 74.h7 Kg7 75.h8Q+ Kxh8 = (0.01) Depth: 7/9 00:00:00 2kN 73...Kf7 74.h7 Kg7 75.h8Q+ Kxh8 = (0.01) Depth: 8/9 00:00:00 3kN 73...Kf7 74.h7 Kg7 75.h8Q+ Kxh8 = (0.01) Depth: 9/10 00:00:01 5kN 73...Kf7 74.h7 Kg7 75.h8Q+ Kxh8 = (0.01) Depth: 10/11 00:00:01 7kN 73...Kf7 74.Kd6 Kg8 75.Ke7 Kh8 76.h7 = (0.05) Depth: 11/12 00:00:01 11kN 73...Kf7 74.Kd6 ² (0.30) Depth: 12/12 00:00:01 16kN 73...Kf7 74.Kd6 ± (0.80) Depth: 12/12 00:00:01 16kN 73...Kf7 74.Kc6 Kg8 75.Kb6 Kf7 76.Ka5 Kg8 77.Kb4 Kh8 78.Ka3 Kg8 +- (4.76) Depth: 12/18 00:00:01 46kN 73...Kf7 74.Kc6 Kg8 75.Kb6 Kf7 76.Ka5 Kg8 77.Kb4 Kh8 78.Ka3 Kg8 +- (4.76) Depth: 13/18 00:00:01 53kN 73...Kf7 74.Kc6 Kg8 75.Kb6 Kh8 76.Ka5 Kg8 +- (4.75) Depth: 14/18 00:00:02 63kN 73...Kf7 74.Kc6 Kg8 75.Kb5 Kh8 76.Kb4 +- (4.76) Depth: 15/23 00:00:02 84kN 73...Kf7 74.Kc6 Kg8 75.Kc5 Kh8 76.h7 +- (4.78) Depth: 16/25 00:00:02 107kN 73...Kf7 74.Kc6 Kg8 75.Kb5 Kh8 76.Kb4 +- (4.78) Depth: 17/28 00:00:02 138kN 73...Kf7 74.Kc6 Kg8 75.Kb5 Kh8 76.Kb4 Kg8 77.Kc5 +- (4.77) Depth: 18/29 00:00:02 203kN 73...Kf7 74.Kc6 Kg8 75.Kb5 Kh8 76.Kb4 Kg8 77.Kc5 Kh8 78.Kb5 +- (4.77) Depth: 19/32 00:00:03 284kN 73...Kf7 74.Kc6 Kg8 75.Kb5 Kh8 76.Kb4 Kg8 77.Kc5 +- (4.76) Depth: 20/33 00:00:03 502kN 73...Kf7 74.Kc6 Kg8 75.Kc5 Kh8 76.Kb6 Kg8 77.Ka5 +- (4.78) Depth: 21/37 00:00:03 804kN 73...Kf7 74.Kc6 Kg8 75.Kb5 Kf7 76.Ka4 Kg8 77.Kb4 Kf7 +- (4.82) Depth: 22/37 00:00:03 1363kN Yes I don't have 5 piece Nalimov set, but Gandalf and Fritz handles these without them. Jouni
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