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Subject: Re: a test position from hiarcs-tiger

Author: Uri Blass

Date: 07:49:13 09/27/00

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On September 27, 2000 at 10:39:33, Vincent Diepeveen wrote:
<snipped>
>Which piece square tables?
>piece square tables won't help you much as they don't tell you the
>king is without protection at the other side of the board.
>
>Diep is evaluating this as +1.151 for black, it sees the mate in 1 in
>its qsearch however, so not even 1 ply needed to see mate in 1 here :)

You are right that piece square tables do not tell that the king is without
protection but the point is that I believe that in most of the cases when the
king go to these squares it is without protection.

I agree that it is better to see it by evaluation without piece square
tables(for example you can see that there are no pawn near the white king) but I
believe that if programs do not see it by better king safety evaluation then
they can at least use better piece square tables

I saw that the position was the end of the main line of Yace and a better
evaluation could help Yace to avoid the mistake.

Uri



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