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Subject: Re: Fast hash key method - Seen the light!

Author: Robert Hyatt

Date: 13:49:39 01/14/98

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On January 14, 1998 at 15:46:58, John Scalo wrote:

>Yep, it looks like I was using, as Bob put it, a "move-based" method
>rather than a position-based method which caused problems. Thanks to all
>who responded!
>
>-j
>
>P.S. Is the same method used for pawn trans tables?

yep.  but watch out for the classic "trap":

If you only include the positions of pawns in the hash key, you can
only hash that part of the pawn score that depends *only* on pawns.  You
will probably forget, as I have, and include a piece somewhere in your
analysis, and get inconsistent results.  :)




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