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

Author: Uri Blass

Date: 05:52:09 04/05/03

Go up one level in this thread


On April 05, 2003 at 08:43:29, Helmut Conrady wrote:

>On April 03, 2003 at 21:05:11, Mike S. 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.
>>
>>Shredder 7.SE (in-between version between 7/7.04) also doesn's seem to find
>>Bh5(Lh5), when all pieces are moved 2 ranks upwards:
>>
>>[D]8/5bk1/8/8/4B1PP/5K2/8/8 b - - 0 1
>
>Try Shredder 7.04. The wrong bishop motiv has been improved especially in this
>version. S 7.04 shows with or without Tbs 0.00 at once.
>
>Helmut

I guess that I am blind because I cannot see the 0.00 at least under chesbase
interface(I did not try it under the UCI interface).

I did not use most of the tablebases but it is no convincing excuse if it has
the knowledge.

New game
[D]8/5bk1/8/8/4B1PP/5K2/8/8 b - - 0 1

Analysis by Shredder 7.04:

1...Bd5 2.Bxd5
  +-  (5.99)   Depth: 1/2   00:00:00
1...Bd5 2.Bxd5
  +-  (6.59)   Depth: 1/2   00:00:00
1...Bd5 2.Bxd5
  +-  (5.38)   Depth: 1/2   00:00:00
1...Kh6
  +-  (2.52)   Depth: 1/2   00:00:00
1...Kh6
  +-  (2.52)   Depth: 1/2   00:00:00
1...Kh6 2.Ke3
  +-  (2.96)   Depth: 2/2   00:00:00
1...Kh6 2.Bg6
  +-  (2.96)   Depth: 2/4   00:00:00
1...Kh6 2.g5+ Kh5 3.g6
  +-  (2.66)   Depth: 3/5   00:00:00
1...Kh6 2.g5+ Kh5 3.Bh7
  +-  (2.50)   Depth: 3/5   00:00:00
1...Kh6 2.g5+ Kh5 3.Kg3 Bg6
  +-  (2.77)   Depth: 4/7   00:00:00
1...Kh6 2.Bd3 Be6 3.Bb5
  +-  (2.92)   Depth: 4/7   00:00:00
1...Kh6 2.g5+ Kh5 3.Kg3 Be8 4.Kf4
  +-  (2.84)   Depth: 5/9   00:00:00
1...Kh6 2.Kf4 Bg6
  +-  (3.09)   Depth: 6/10   00:00:00  4kN
1...Kh6 2.Kf4 Be6 3.Bf5 Bd5 4.Ke5
  +-  (3.10)   Depth: 6/10   00:00:00  5kN
1...Kh6 2.Kf4 Bg8 3.Bf3 Bc4 4.g5+ Kg6
  +-  (3.15)   Depth: 7/11   00:00:00  11kN
1...Kh6 2.Kf4 Be6 3.g5+ Kh5 4.Bc6
  +-  (2.90)   Depth: 8/11   00:00:00  23kN
1...Kh6 2.Kf4 Be6 3.Bf5 Bg8 4.Ke3 Bc4 5.Kd2
  +-  (2.83)   Depth: 8/11   00:00:00  26kN
1...Kh6 2.Kf4 Bd5
  +-  (3.08)   Depth: 9/11   00:00:00  30kN
1...Kh6 2.Kf4 Be6 3.Bf5 Bf7 4.Ke5 Bh5 5.Kf6 Be8
  +-  (3.16)   Depth: 9/13   00:00:00  50kN
1...Kh6 2.Kf4 Be6 3.Bf5 Bf7 4.Bd7 Bh5 5.g5+ Kg7 6.Be6
  +-  (3.11)   Depth: 10/14   00:00:01  84kN
1...Kh6 2.g5+ Kh5 3.Kg3 Bg8 4.Bf3+ Kg6 5.Bc6
  +-  (3.03)   Depth: 11/19   00:00:01  139kN
1...Kh6 2.g5+ Kh5 3.Kg3 Bg8 4.Bc6 Kg6 5.Be8+ Kg7 6.Kf4 Kh7 7.Ke5 Kg7 8.Bd7
  +-  (3.28)   Depth: 12/19   00:00:01  169kN
1...Kh6 2.g5+ Kh5 3.Kg3 Bg8 4.Bc6 Kg6 5.Be8+ Kh7 6.h5 Bc4 7.Bg6+ Kg7 8.Kh3
  +-  (3.32)   Depth: 12/19   00:00:02  200kN
1...Kh6 2.g5+ Kh5 3.Kg3 Bd5 4.Bxd5 Kg6
  +-  (3.57)   Depth: 13/19   00:00:02  355kN
1...Kh6 2.g5+ Kh5 3.Kg3 Be6 4.Bc6 Kg6 5.Be8+ Kh7 6.h5
  +-  (3.57)   Depth: 13/19   00:00:03  408kN
1...Kh6 2.Kf4 Be6 3.Bf3
  +-  (3.57)   Depth: 14/23   00:00:04  681kN
1...Kh6 2.g5+ Kh5 3.Kg3 Be6
  +-  (3.82)   Depth: 15/23   00:00:05  913kN
1...Kh6 2.g5+ Kh5 3.Kg3 Be6 4.Bf3+ Kg6 5.Kf4 Kf7 6.h5 Kg7
  +-  (3.86)   Depth: 15/23   00:00:06  1124kN
1...Bc4 2.Kf4 Bb3 3.g5 Bd1 4.Ke5
  +-  (3.85)   Depth: 15/23   00:00:07  1500kN
1...Bc4 2.g5 Ba2 3.Kf4 Kg8 4.h5 Kf8
  +-  (3.85)   Depth: 15/23   00:00:08  1686kN
1...Be8 2.g5 Kg8 3.Kf4 Kh8 4.Bf3
  +-  (3.84)   Depth: 15/23   00:00:10  2231kN
1...Be8 2.g5 Kg8 3.Kf4 Kh8 4.Bf3 Ba4
  +-  (3.84)   Depth: 15/23   00:00:10  2235kN
1...Be8 2.g5 Kg8 3.Kf4 Kh8 4.Bf3 Kg7 5.h5 Bf7 6.h6+ Kh8 7.Be4 Be8
  +-  (3.87)   Depth: 16/23   00:00:12  2570kN
1...Be8 2.g5 Kg8 3.Kf4 Kh8 4.Bf3
  +-  (3.87)   Depth: 17/23   00:00:14  2966kN
1...Be8 2.g5 Kg8 3.Kf4 Kh8 4.Bf3
  +-  (3.87)   Depth: 18/23   00:00:15  3348kN
1...Be8 2.g5 Kg8 3.Kg4 Kg7 4.h5 Kg8
  +-  (4.12)   Depth: 19/27   00:00:20  4684kN
1...Be8 2.g5 Kg8 3.Kg3 Bh5 4.Kf4 Bd1 5.Bf3 Ba4 6.h5 Bb3
  +-  (4.13)   Depth: 19/27   00:00:27  6631kN
1...Be8 2.g5 Kg8 3.Kf4 Bf7 4.Bf3 Kh7
  +-  (4.24)   Depth: 20/29   00:00:39  10190kN

(Blass, Tel-Aviv 05.04.2003)

Uri



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