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Subject: Re: Trapping the queen

Author: Koundinya Veluri

Date: 22:54:41 09/30/01

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On September 30, 2001 at 23:51:51, Steffen Jakob wrote:

>On September 30, 2001 at 22:44:38, Koundinya Veluri wrote:
>
>>[D]r1b2rk1/1ppq2bp/3p1ppB/3Pp2P/p1P1P1P1/4QP2/PP2NK1R/R7 b - - 0 20
>>
>>The game went 20... Bxh6 21. Qxh6 g5 and the white Queen is completely out of
>>play for the rest of the game. It's as though black is a piece up. How can
>>programs spot such threats?
>
>With mobility!
>
>Hossa 1.135:
>
> depth   value    time    nodes pv
>    1    -2.56    0.01       10 1... g7h8 2.h6xf8 Kxf8 3.h5xg6
>  2/1    -0.11    0.01       14 1... g7xh6 2.e3xh6
>  6/1    +0.15    0.01       90 1... d7f7 2.h6xg7 f7xg7 3.h5xg6 g7xg6
> 14/1    +0.52    0.01      165 1... g5 2.h6xg7 d7xg7
>   <1>   +0.52    0.02      257 1... g5 2.h6xg7 d7xg7
>    2    +0.52    0.02      306 1... g5 2.h6xg7
>   <2>   +0.52    0.02      515 1... g5 2.h6xg7
>    3    +0.52    0.03      842 1... g5 2.h6xg7 d7xg7
>!   3    +1.39    0.05     2393 1... g7xh6 2.e3xh6 g5
>!  <3>   +1.39    0.06     2640 1... g7xh6 2.e3xh6 g5
>    4    +1.11    0.07     3658 1... g7xh6 2.e3xh6 g5 3.Ke1
>   <4>   +1.11    0.10     5293 1... g7xh6 2.e3xh6 g5 3.Ke1
>
>...
>
>Greetings,
>Steffen.

Cool! Thanks, I have to try some stuff then.

Koundinya



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