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

Author: Peter Skinner

Date: 15:54:33 07/15/03

Go up one level in this thread


On July 15, 2003 at 18:49:43, George Tsavdaris wrote:

>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

With tablebases:

00:00:00.0	-0.74	1	8	b4 axb4 axb4
00:00:00.0	-0.74	1	26	b4 axb4 axb4
00:00:00.0	-0.74	2	74	b4 axb4 axb4
00:00:00.0	-1.16	3	201	b4 axb4 axb4 Kc4
00:00:00.0	-0.98	3	354	Kd8 c6 b4 axb4 axb4
00:00:00.0	-0.98	4	537	Kd8 c6 b4 axb4 axb4
00:00:00.0	-0.40	4	760	a4 Kd4 b4 axb4
00:00:00.0	-0.72	5	1014	a4 Kd4 b4 axb4 a3
00:00:00.0	-0.66	6	3160	a4 Kd4 Kd7 Kc3 Kc6 Kb4
00:00:00.0	-0.36	6	4871	f6 h4 a4 Kd4 b4 axb4
00:00:00.0	-0.68	7	5951	f6 h4 a4 Kd4 b4 axb4 a3
00:00:00.0	-0.64	7	7332	a4 Kd4 Kd7 Kc3 Kc7 Kb4 Kc6
00:00:00.0	-0.64	8	9375	a4 Kd4 Kd7 Kc3 Kc7 Kb4 Kc6 h4
00:00:00.0	-1.22	9	18499	a4 Kd4 Kc6 h4 f6 h5 Kd7 Kc3 Kc7
00:00:00.0	-0.16	9	24418	f6 h4 Kd7 c6+ Kc7 Kc5 b4 axb4 axb4 Kxb4 Kxc6
00:00:00.1	-0.16	10	30705	f6 h4 Kd7 h5 Kc7 Ke4 Kc6 Kd4 b4 axb4 axb4
00:00:00.1	-0.14	11	44895	f6 h4 Kd7 c6+ Kc7 Kc5 b4 axb4 axb4 Kxb4 Kxc6 Kc4 Kd6
00:00:00.2	-0.24	12	69550	f6 h4 Kd7 c6+ Kc7 Kc5 b4 axb4 axb4 Kxb4 Kxc6 Kc4 Kd6
h5 Kc6
00:00:00.3	0.04	13	131405	f6 h4 Kd7 h5 Kc7 Ke4 b4 a4 b3 Kd3 Kc6 Kc3 b2 Kxb2 Kxc5
00:00:00.5	0.22	14	214670	f6 h4 Kd7 c6+ Kc7 Kc5 b4 axb4 a4 Kc4 Kxc6 b5+ Kb6 Kb4
a3 Kxa3 Kxb5
00:00:01.0	0.22	15	376349	f6 h4 Kd7 c6+ Kc7 Kc5 b4 axb4 a4 Kc4 Kxc6 b5+ Kb6 Kb4
a3 Kxa3 Kxb5
00:00:01.5	0.00	16	566769	f6 h4 Kd7 c6+ Kc7 Kc5 b4 axb4 axb4 Kxb4 Kxc6 Kc4 Kd6
h5 Kc6 Kd4 Kd6 Kc4 Kc6
00:00:02.6	0.00	17	991590	f6 h4 Kd7 c6+ Kc7 Kc5 b4 axb4 axb4 Kxb4 Kxc6 Kc4 Kd6
h5 Kc6 Kd4 Kd6 Kc4 Kc6 Kd4
00:00:03.9	0.00	18	1482310	f6 h4 Kd7 c6+ Kc7 Kc5 b4 axb4 axb4 Kxb4 Kxc6 Kc4 Kd6
h5 Kc6 Kd4 Kd6 Kc4 Kc6 Kd4
00:00:06.0	0.00	19	2187731	f6 h4 Kd7 c6+ Kc7 Kc5 b4 axb4 axb4 Kxb4 Kxc6 Kc4 Kd6
g5 fxg5
00:00:10.6	0.00	20	3915046	f6 h4 Kd7 c6+ Kc7 Kc5 b4 axb4 axb4 Kxb4 Kxc6 Kc4 Kd6
g5 fxg5
00:00:18.3	0.00	21	6740744	f6 h4 Kd7 c6+ Kc7 Kc5 b4 axb4 axb4 Kxb4 Kxc6 Kc4 Kd6
g5 fxg5
00:00:39.2	0.00	22	15242595	f6 h4 Kd7 c6+ Kc7 Kc5 b4 axb4 axb4 Kxb4 Kxc6 Kc4 Kd6
g5 fxg5




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