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Subject: Re: qSearch and stand pat question

Author: Dieter Buerssner

Date: 10:04:22 11/04/03

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On November 04, 2003 at 09:53:16, Daniel Clausen wrote:

>I don't have much experience when it comes to evaluate such positions with my
>engine, but are you sure it's a good idea to evaluate two connected pawns on the
>7th row at least one rook? Are there more positions where this is right than
>wrong?

I think, it is a good idea. Not only on 7th rank but also on 6th rank. But only,
when the only opponent piece is a rook (a B might easily stop the pawns, when
the R is helpless). Also the opponent K must be far enough away. I use a table
for this (more or less manually initialized the table by looking at KPPKR TB). I
have seen it now and then (not really rare), that this helped my engine to save
a draw, or find a win. I programmed it rather defensively (should be really
rather sure, that the opponent rook must sac itself, before giving really high
bonus for 2 connected passers on 6th rank), and did not see disadvantages yet.

Regards,
Dieter



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