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Subject: Re: Why can't Shredder 7 solve this simple endgame position?

Author: Ingo Bauer

Date: 06:17:07 04/03/03

Go up one level in this thread


On April 03, 2003 at 09:06:28, Uri Blass wrote:

>On April 03, 2003 at 09:02:36, Uri Blass wrote:
>
>>On April 03, 2003 at 07:56:04, Jouni Uski wrote:
>>
>>>[D]8/8/8/5bk1/8/8/4B1PP/5K2 b - -
>>>
>>>S7 don't find -Bh3 in 10 minutes. Why???? I don't have full 5 piece TBs for
>>>sure, but most amateurs find move even without (any) TBs.
>>>
>>>Jouni
>>
>>There are amateurs that can find it(Comet,List,Crafty,Goliath Light) but
>>I think that you are wrong to assume that most amateurs find it
>>without any tablebases.
>
>The interesting thing is that after Bh3 gxh3 shredder7.04 has
>no problem to see score that is close to 0.00
>
>Uri

And even without these two moves S7.04 finds the right move (even without TBS).
I think SMK just assumes that EGTB are installed and invests his time in the
developing of the middlegame.

Engine: Shredder 7.04
by Stefan Meyer-Kahlen
 15/23	 0:01 	-2.41 	1...Kh4 2.g3+ Kh3 3.Kg1 Be6 4.Bf1+ Kg4 5.Kf2 Bb3 6.h4 Kh5
(966.073) 684.1
 16/23	 0:02 	-2.41 	1...Kh4 2.g3+ Kh3 3.Kg1 Be6 4.Bf1+ Kg4 5.Kf2 Bd7
(1.426.582) 681.5
 17/24	 0:03 	-2.48 	1...Kh4 2.g3+ Kh3 3.Kg1 Be4 4.Bf1+ Kg4 5.Kf2 Kf5 6.h4 Bb1
(2.134.547) 696.6
 18/25	 0:04 	-2.54 	1...Kh4 2.Kg1 Be4 3.g3+ Kh3 4.Bf1+ Kg4 5.Kf2 Bf5
(2.928.529) 701.2
 18/25	 0:05 	-2.53++	1...Bc8 2.g3 Kf6 3.Kf2 Kg7 4.h4 (3.691.933) 707.6
 18/25	 0:05 	-2.53 	1...Bc8 2.g3 Kf6 3.h4 Bh3+ 4.Kf2 Kf5 (4.221.440) 712.1
 19/25	 0:07 	-2.54 	1...Bc8 2.g3 Be6 3.Kf2 Bh3 4.Bf1 Be6 5.h4+ Kh6 6.Be2
(5.704.164) 727.4
 20/29	 0:11 	-2.58 	1...Bc8 2.g3 Bh3+ 3.Kf2 Kf6 4.Bf1 Bf5 5.Kf3 Kg5 (8.235.709)
738.2
 20/29	 0:11 	-2.57++	1...Kh4 2.Kg1 Be6 3.g3+ Kh3 4.Bf1+ Kg4 5.h4 Kxg3 6.Kh1
(8.647.117) 736.8
 20/29	 0:11 	-2.54 	1...Kh4 2.Kg1 Be6 3.g3+ Kh3 4.Bf1+ Kg4 5.Kf2 Kg5 6.h4+ Kh6
(8.782.453) 735.1
 21/28	 0:16 	-2.59 	1...Kh4 2.g3+ Kh3 3.Kg1 Be4 4.Bf1+ Kg4 (12.201.319) 737.9
 22/29	 0:20 	-2.63 	1...Kh4 2.g3+ Kh3 3.Kg1 Be6 4.Bf1+ Kg4 5.Kf2 Kg5 6.h4+ Kh6
(15.186.945) 737.6
 22/29	 0:27 	-2.62++	1...Be6 2.g3 Bh3+ 3.Kf2 Kf6 4.Bf1 Bd7 5.Kf3 Kg5 6.h4+ Kh6
7.Bd3 (20.968.050) 749.9
 22/29	 0:28 	-2.62 	1...Be6 2.g3 Bh3+ 3.Kf2 Kf6 4.Bf1 Bd7 5.Kf3 Kg5 6.h4+ Kh6
7.Be2 Be8 (21.055.269) 750.0
 23/31	 0:32 	-2.64 	1...Be6 2.g3 Bh3+ 3.Kf2 Kf6 4.Bf1 Bd7 5.h4 Kg6 6.Bd3+ Kh5
7.Be2+ Kg6 (24.392.433) 755.2
 23/31	 0:34 	-2.63++	1...Kh4 2.g3+ Kh3 3.Kg1 Be6 4.Bf1+ Kg4 5.Kf2 (25.929.445)
754.4
 23/31	 0:34 	-2.63 	1...Kh4 2.g3+ Kh3 3.Kg1 Be6 4.Bf1+ Kg4 5.Kf2 Bd7
(25.982.062) 754.4
 24/31	 0:40 	-2.65 	1...Kh4 2.g3+ Kh3 3.Kg1 Be6 4.Bf1+ Kg4 5.Kf2 Bd7 6.h3+ Kg5
7.Ke3 (30.416.866) 756.1
 25/33	 1:32 	-2.69 	1...Kh4 2.Kg1 Bh3 3.g3+ Kg5 4.Kf2 Kf6 5.Bf1 Bd7 6.h4 Kg6
(76.058.270) 821.5
 26/35	 2:13 	-2.79 	1...Kh4 2.g3+ Kh3 3.Kg1 Bd7 4.Bf1+ Kg4 5.Kf2 Bb5
(112.698.079) 846.2
 26/37	 3:27 	-2.78++	1...Bh3 2.gxh3 Kf6 3.Kf2 Kf7 4.Ke3 Kg6 5.Kf3 Kf6 6.Kg3
(178.054.166) 857.9
 26/37	 3:47 	-2.76 	1...Bh3 2.gxh3 Kf6 3.Kf2 Ke6 4.Kf3 Kd7 5.Kg4 Ke6 6.Kg3 Ke7
7.Kf3 Kd7 8.Kg4 Ke6 9.Kg3 Ke7 10.Kf3 Kd7 11.Kg4 (197.978.185) 870.0
 27/34	 4:55 	-2.71 	1...Bh3 2.gxh3 Kf6 3.Kf2 Kf7 4.Kg3 Ke6 5.Bc4+ Ke7 6.Be2 Ke8
7.Kf3 Kd7 8.Kg4 Ke6 9.Bf3 (259.151.305) 876.0
 28/33	 5:53 	-2.75 	1...Bh3 2.gxh3 Kf6 3.Kg2 Ke7 4.Bg4 Kf6 5.Kf2 Ke7 6.Bf3 Kd7
7.Bg4+ Ke8 (315.614.167) 893.7
 29/35	 7:48 	-2.77 	1...Bh3 2.gxh3 Kf6 3.Kf2 Kg7 4.Ke3 Kf6 5.Bb5 Ke7
(429.173.379) 916.2
 30/36	11:32 	-2.77 	1...Bh3 2.gxh3 Kf6 3.Kf2 Kg7 4.Bd3 Kf7 5.Ke3 Kf6 6.Bb5 Kf7
7.Bc4+ Kg7 8.Kf2 Kf6 9.Kf3 Kg5 10.Kf2 Kf6 11.Kf3 Kg5 12.Kf2 Kf6 13.Kf3
(647.952.615) 935.3
 31/39	18:33 	-2.77 	1...Bh3 2.gxh3 Kf6 3.Kf2 Kg7 4.Bd3 Kf7 5.Ke3 Kf6 6.Bb5 Kf7
7.Bc4+ Kg7 8.Kf2 Kf6 9.Be2 Kg7 10.Bd3 Kf7 11.Ke3 Kf6 12.Bb5 Kf7 13.Bc4+ Kg7
14.Kf2 Kf6 (1.029.503.191) 924.3
 32/39	23:18 	-2.77 	1...Bh3 2.gxh3 Kf6 3.Kf2 Kg7 4.Bd3 Kf7 5.Ke3 Kf6 6.Bb5 Kg5
7.Kf2 Kh5 8.Kg2 Kh6 9.Kg3 Kg5 10.h4+ Kg6 11.h3 (1.296.567.477) 926.9
 33/41	55:26 	-2.80 	1...Bh3 2.gxh3 Kf6 3.Kg2 Kg5 4.Kg3 Kf5 5.Bb5 Kg5 6.Bd3 Kh6
7.Kf4 Kh5 (3.309.327.529) 994.9
best move: Bf5-h3 time: 61:30.376 min  n/s: 1.006.540  CPU 99.5%  nodes:
3.714.502.698


Bye Ingo



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