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Subject: Re: Mate in 14 problem

Author: Gian-Carlo Pascutto

Date: 07:24:35 01/05/02

Go up one level in this thread


On January 05, 2002 at 10:16:22, Gian-Carlo Pascutto wrote:

>On January 05, 2002 at 10:01:24, Dieter Buerssner wrote:
>
>>I think, Yace is not so good at mates, where the position already looks won,
>>because it limits its extension here (or better, doesn't do most extensions at
>>all). Also, I think it is not important for practical playing strength, because
>>with a score of +9.x chess programs will usually win (studies might be an
>>exception).
>>
>>Another example, where no large advantage can be found at shallow depth:
>>
>>[D] 6r1/2rp1kpp/2qQp3/p3Pp1P/1pP2P2/1P2KP2/P5R1/6R1 w - -
>
>Nice position! (and hard too)

Hmm, too easy :)

Sjeng: go
Middlegame phase.
Clearing hash...
Time for move : 3000
 2      53    12      276  Ke2 Qxd6 exd6
 2      53    12      872  Ke2 Qxd6 exd6
 3      47    12     1084  Ke2 Qxd6 exd6 Rc5
 3      48    13     2788  h6 !
 3     103    13     3139  h6 !!
 3     103    13     3719  h6 g6 Ke2 Qxd6 exd6
 3     103    13     4232  h6 g6 Ke2 Qxd6 exd6
 4      66    14     5637  h6 g6 Qxc6 dxc6
 4      67    14     6222  Qxc6 !
 4     105    15    11476  Qxc6 dxc6 h6 Ke8 hxg7
 5      55    16    15093  Qxc6 ??
 5      56    19    25235  Ke2 !
 5      97    23    40345  Qd3 !
 5      98    25    47724  Qd1 !
 5     107    26    53502  Qd1 Ke8 Ke2 g6 hxg6 hxg6 Rxg6 Rxg6 Rxg6
 6     107    30    68957  Qd1 Ke8 Ke2 g6 hxg6 hxg6 Rxg6 Rxg6 Rxg6
 6     108    38   101714  Qd4 !
 6     107    49   146521  Qd1 Ke8 Ke2 g6 hxg6 hxg6 Rxg6 Rxg6 Rxg6
 7      71    58   185461  Qd1 Ke8 Rxg7 Rxg7 Rxg7 d5 Rg8+ Ke7 cxd5
 7      72    78   260037  Qd4 !
 7     113   106   392920  Qd4 g6 hxg6+ hxg6 Ke2 Ke8 Rxg6 Rxg6 Rxg6 a4
 8     108   144   554713  Qd4 Qc5 Qxc5 Rxc5 Ke2 Rcc8 Ke1 Kf8 Rg3
 8     108   187   745984  Qd4 Qc5 Qxc5 Rxc5 Ke2 Rcc8 Ke1 Kf8 Rg3
 9     117   250  1016443  Qd4 Qc5 Qxc5 Rxc5 Ke2 g6 hxg6+ hxg6 Ke1 Ke8 Rxg6 Rxg6
Rxg6
 9     117   333  1392333  Qd4 Qc5 Qxc5 Rxc5 Ke2 g6 hxg6+ hxg6 Ke1 Ke8 Rxg6 Rxg6
Rxg6
10     107   547  2326305  Qd4 g6 hxg6+ hxg6 Ke2 Qc5 Qxc5 Rxc5 <Ke1> <Ke8>
<Rxg6> <Rxg6> <Rxg6> <a4>
10     108   647  2764111  Rxg7+ !
10     167   651  2780961  Rxg7+ !!
10     517   663  2853668  Rxg7+ !!
10     516   687  2936690  Rxg7+ ??
11     567   766  3229348  Rxg7+ !!
11     917   804  3406574  Rxg7+ !!
11  999970   977  4009242  Rxg7+ Rxg7 Rxg7+ Kxg7 Qe7+ Kg8 Qe8+ Kg7 h6+ Kxh6 Qf8+
Kh5 Qf7+ Kh4 Qxh7+ Kg3 Qg8+ Kh4 Kf2 Qc5+ Kg2 Qg1+ Kxg1 Rc6 Qg5+ Kh3 Qg2+ Kh4
Qh2#

9.7 seconds

I think that this is a position where ChessMaster has a chance of
beating me, considering that my normal search also finds this instantly.

--
GCP



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