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Subject: Re: how large should a pawn hashtable be?

Author: Dann Corbit

Date: 14:52:10 02/11/04

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On February 11, 2004 at 17:35:59, Russell Reagan wrote:

>On February 11, 2004 at 17:25:06, Dann Corbit wrote:
>
>>Your pawn hash deals only with this:
>>[D]4k3/8/7p/1pPp2pP/pP1PppP1/P3P3/8/4K3 w - -
>
>>And then you store also a score like -15 centipawns.
>
>I think some people don't return a score, but information about the position.
>For instance, their pawn hash entry for this pawn structure might contain
>bitboards for passed pawns, isolated pawns, and so on. That information can then
>be used in conjunction with the other dynamics of the board (where the other
>supporting pieces are, etc.).

They will have an awful time with the hash table if they don't compute a simple
score from it.

At some point they will have to do it anyway.  So if the pawn score and [pawn
related parts of] king safety can be pulled away from the main evaluation into
its own module it will simplify things a lot.



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