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Subject: Re: Interesting comp vs comp position : Chess Tiger is the guilty one!

Author: George Tsavdaris

Date: 15:49:43 07/15/03

Go up one level in this thread


On July 15, 2003 at 18:27:08, Peter Skinner wrote:

>On July 15, 2003 at 15:21:17, Robert Hyatt wrote:
>
>>Here is a position reached in a game on ICC between Crafty and an
>>unnamed opponent:
>>
>>[D]8/2k2p2/7p/ppPK4/6P1/P6P/8/8 w 0 1
>
>Tiger has this output:
>
>00:00:00.0	1.30	1	1	c6
>00:00:00.0	1.00	1	26	c6
>00:00:00.0	0.70	2	147	h4 b4 axb4 axb4
>00:00:00.0	0.70	3	208	h4 b4 axb4 axb4
>00:00:00.0	0.80	4	937	h4 a4 g5 h5
>00:00:00.0	-0.02	5	1495	c6 b4 axb4 a4 Kc4 Kxc6
>00:00:00.0	0.02	5	1998	Ke5 b4 axb4 axb4 Kd4 b3
>00:00:00.0	0.12	6	2523	Ke5 b4 axb4 axb4 Kd4 b3 Kc3
>00:00:00.0	0.12	7	3235	Ke5 b4 axb4 axb4 Kd4 b3 Kc3 Kc6 Kxb3 Kxc5
>00:00:00.0	0.18	7	4328	c6 b4 axb4 a4 Kc4 Kxc6 b5+ Kb6
>00:00:00.0	0.12	8	6225	c6 b4 axb4 axb4 Kc4 Kxc6 Kxb4 Kd5 Kc3
>00:00:00.0	-0.02	9	11178	c6 b4 axb4 a4 Kd4 Kxc6 Kc4 Kd6 b5
>00:00:00.0	0.16	10	23435	c6 f6 Kc5 b4 axb4 a4 Kc4 Kxc6 b5+ Kb6 h4
>00:00:00.1	0.22	11	39804	c6 b4 axb4 axb4 Kc4 Kxc6 Kxb4 Kd5 Kc3 f6 Kd3 Kc5
>00:00:00.1	0.22	12	55156	c6 b4 axb4 axb4 Kc4 Kxc6 Kxb4 Kd5 Kc3 Kc5 Kd3 f6 Ke4
>00:00:00.2	-0.01	13	92131	c6 b4 axb4 a4 Kc4 Kxc6 b5+ Kb6 Kb4 a3 Kxa3 Kxb5 Kb3
>00:00:00.3	0.22	14	151524	c6 b4 axb4 a4 Kc4 Kxc6 b5+ Kb6 Kb4 a3 Kxa3 Kxb5 Kb3
>Kc5 Kc3
>00:00:00.5	0.22	15	238171	c6 b4 axb4 a4 Kc4 Kxc6 b5+ Kb6 Kb4 a3 Kxa3 Kxb5 Kb3
>Kc5 Kc3
>00:00:00.7	0.22	16	353994	c6 b4 axb4 a4 Kc4 Kxc6 b5+ Kb6 Kb4 a3 Kxa3 Kxb5 Kb3
>Kc5 Kc3
>00:00:01.2	-0.54	17	577554	c6 b4 axb4 axb4 Kc4 Kxc6 Kxb4 Kd5 Kc3 Ke4 Kc4 Kf4 Kd4
>Kg3 Ke5 Kxh3 Kf5
>00:00:01.6	-0.54	18	777533	c6 b4 axb4 axb4 Kc4 Kxc6 Kxb4 Kd5 Kc3 Ke4 Kc4 Kf4 Kd4
>Kg3 Ke5 Kxh3 Kf5
>00:00:02.4	-0.68	19	1169702	c6 b4 axb4 axb4 Kc4 Kxc6 Kxb4 Kd5 Kc3 Ke4 Kc4 Kf4
>Kd4 Kg3 Ke5 Kxh3 Kf5 Kh4 Kf4
>00:00:04.9	-0.68	20	2339470	c6 b4 axb4 axb4 Kc4 Kxc6 Kxb4 Kd5 Kc3 Ke4 Kc4 Kf4
>Kd4 Kg3 Ke5 Kxh3 Kf5 Kh4 Kf4
>00:00:08.6	-0.68	21	4062914	c6 b4 axb4 axb4 Kc4 Kxc6 Kxb4 Kd5 Kc3 Ke4 Kc4 Kf4
>Kd4 Kg3 Ke5 Kxh3 Kf5 Kh4 Kf4
>00:00:16.2	-0.58	22	7750730	c6 b4 axb4 axb4 Kc4 Kxc6 Kxb4 Kd5 Kc3 Ke4 Kc4 Kf4
>Kd4 Kg3 Ke5 Kxh3 Kf4 Kg2 Kf5
>00:00:33.5	-1.28	23	16081925	c6 b4 axb4 axb4 Kc4 Kxc6 Kxb4 Kd5 Kc3 Ke4 Kc4 Kf4
>Kd4 Kg3 Ke5 Kxh3 Kf4 Kg2 Ke4

Again strange. I have a different analysis by Chess Tiger 14.0 and
Chess Tiger 15.0 ga and normal. Maybe you don't have KPPKP endgame
tablebase or we have different sets of tablebases.
CT14 finds the draw instantly, while CT15 in 29 seconds finds the drawing move.
---------------------------------------------------------------------------
Analysis by Chess Tiger 14.0:

1.Kd5-e5 Kc7-c6 2.Ke5-d4 f7-f6 3.h3-h4 b5-b4 4.a3xb4 a5xb4 5.Kd4-c4 b4-b3
6.Kc4xb3 Kc6xc5
  =  (-0.12)   Depth: 12   00:00:00  127kN, tb=1
1.Kd5-e5 Kc7-c6 2.Ke5-d4 f7-f6 3.h3-h4 b5-b4 4.a3xb4 a5xb4 5.Kd4-c4 b4-b3
6.Kc4xb3 Kc6xc5 7.Kb3-c3
  =  (-0.02)   Depth: 12   00:00:00  174kN, tb=2
1.Kd5-e5 Kc7-c6 2.Ke5-d4 f7-f6 3.h3-h4 b5-b4 4.a3xb4 a5xb4 5.Kd4-c4 b4-b3
6.Kc4xb3 Kc6xc5 7.Kb3-c3 Kc5-d5
  =  (-0.02)   Depth: 13   00:00:01  320kN, tb=7
1.Kd5-e5 Kc7-c6 2.Ke5-d4 f7-f6 3.h3-h4 b5-b4 4.a3xb4 a5xb4 5.Kd4-c4 b4-b3
6.Kc4xb3 Kc6xc5 7.Kb3-c3 Kc5-d5 8.Kc3-d3
  =  (0.00)   Depth: 14   00:00:02  686kN, tb=23
1.Kd5-e5 Kc7-c6 2.Ke5-d4 f7-f6 3.h3-h4 b5-b4 4.a3xb4 a5xb4 5.Kd4-c4 b4-b3
6.Kc4xb3 Kc6xc5 7.Kb3-c3 Kc5-d5 8.Kc3-d3 Kd5-c5
  =  (0.00)   Depth: 15   00:00:03  1122kN, tb=85
1.Kd5-e5 Kc7-c6 2.Ke5-d4 f7-f6 3.h3-h4 b5-b4 4.a3xb4 a5xb4 5.Kd4-c4 b4-b3
6.Kc4xb3 Kc6xc5 7.Kb3-c3 Kc5-d5 8.Kc3-d3 Kd5-c5 9.Kd3-e4
  =  (0.00)   Depth: 16   00:00:06  1854kN, tb=298
1.Kd5-e5 Kc7-c6 2.Ke5-d4 f7-f6 3.h3-h4 b5-b4 4.a3xb4 a5xb4 5.Kd4-c4 b4-b3
6.Kc4xb3 Kc6xc5 7.Kb3-c3 Kc5-d5 8.Kc3-d3 Kd5-c5 9.Kd3-e4 Kc5-c4
  =  (0.00)   Depth: 17   00:00:11  3091kN, tb=896
1.Kd5-e5 Kc7-c6 2.Ke5-d4 f7-f6 3.h3-h4 b5-b4 4.a3xb4 a5xb4 5.Kd4-c4 b4-b3
6.Kc4xb3 Kc6xc5 7.Kb3-c3 Kc5-d5 8.Kc3-d3 Kd5-e5 9.Kd3-e3 Ke5-d5 10.Ke3-d3
  =  (0.00)   Depth: 18   00:00:20  5431kN, tb=2341
1.Kd5-e5 Kc7-c6 2.Ke5-d4 f7-f6 3.h3-h4 b5-b4 4.a3xb4 a5xb4 5.Kd4-c4 b4-b3
6.Kc4xb3 Kc6xc5 7.Kb3-c3 Kc5-d5 8.Kc3-d3 Kd5-e5 9.Kd3-e3 Ke5-d5 10.Ke3-d3
  =  (0.00)   Depth: 19   00:00:35  9317kN, tb=5471
---------------------------------------------------------------------------
Analysis by Chess Tiger 15.0 ga and normal:

61.c5-c6 b5-b4 62.a3xb4 a5xb4 63.Kd5-c4 Kc7xc6 64.Kc4xb4 f7-f5 65.g4xf5
  =  (0.00)   Depth: 14   00:00:00  119kN, tb=26
61.c5-c6 b5-b4 62.a3xb4 a5xb4 63.Kd5-c4 Kc7xc6 64.Kc4xb4 f7-f5 65.g4xf5
  =  (0.00)   Depth: 14   00:00:00  134kN, tb=29
61.c5-c6 b5-b4 62.a3xb4 a5xb4 63.Kd5-c4 Kc7xc6 64.Kc4xb4 f7-f5 65.g4xf5
  =  (0.00)   Depth: 15   00:00:00  247kN, tb=58
61.c5-c6 b5-b4 62.a3xb4 a5xb4 63.Kd5-c4 Kc7xc6 64.Kc4xb4 f7-f5 65.g4xf5
  =  (0.00)   Depth: 16   00:00:01  362kN, tb=111
61.c5-c6 b5-b4 62.a3xb4 a5xb4 63.Kd5-c4 Kc7xc6 64.Kc4xb4 f7-f5 65.g4xf5
  =  (0.00)   Depth: 17   00:00:02  533kN, tb=205
61.c5-c6 b5-b4 62.a3xb4 a5xb4 63.Kd5-c4 Kc7xc6 64.Kc4xb4 Kc6-d5 65.Kb4-c3 Kd5-e4
66.Kc3-c4 Ke4-f4 67.Kc4-d5 Kf4-g3 68.Kd5-e5 Kg3xh3 69.Ke5-f4 Kh3-h4 70.Kf4-f5
  µ  (-0.86)   Depth: 18   00:00:03  836kN, tb=423
61.c5-c6 b5-b4 62.a3xb4 a5xb4 63.Kd5-c4 Kc7xc6 64.Kc4xb4 Kc6-d5 65.Kb4-c3 Kd5-e4
66.Kc3-c4 Ke4-f4 67.Kc4-d5 Kf4-g3 68.Kd5-e5 Kg3xh3 69.Ke5-f4 Kh3-h4 70.Kf4-f5
  µ  (-0.86)   Depth: 19   00:00:10  3126kN, tb=848
61.Kd5-e5 Kc7-c6 62.h3-h4 b5-b4 63.a3xb4 a5xb4 64.Ke5-d4 b4-b3 65.Kd4-c3 Kc6xc5
66.g4-g5 h6xg5 67.h4-h5 g5-g4 68.h5-h6 g4-g3 69.h6-h7 g3-g2 70.h7-h8Q g2-g1Q
71.Qh8-e5+
  µ  (-1.16)   Depth: 20   00:00:29  9132kN, tb=2209
61.Kd5-e5 Kc7-c6 62.h3-h4 b5-b4 63.a3xb4 a5xb4 64.Ke5-d4 b4-b3 65.Kd4-c3 Kc6xc5
66.g4-g5 h6xg5 67.h4-h5 g5-g4 68.h5-h6 g4-g3 69.h6-h7 g3-g2 70.h7-h8Q g2-g1Q
71.Qh8-e5+
  µ  (-1.16)   Depth: 21   00:00:48  15686kN, tb=3095
61.Kd5-e5 Kc7-c6 62.h3-h4 b5-b4 63.a3xb4 a5xb4 64.Ke5-d4 b4-b3 65.Kd4-c3 Kc6xc5
66.g4-g5 h6xg5 67.h4-h5 g5-g4 68.h5-h6 g4-g3 69.h6-h7 g3-g2 70.h7-h8Q g2-g1Q
71.Qh8-e5+
  µ  (-0.92)   Depth: 22   00:01:47  36131kN, tb=5191



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