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Subject: Re: Hashing

Author: Dieter Buerssner

Date: 11:58:49 04/05/03

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On April 04, 2003 at 17:10:15, Russell Reagan wrote:

>Instead of fiddling around with all of the special cases of when to hash this or
>that, how well do you think a combination approach would work?

Russell, I don't see much fiddling with special cases. To me it seems, you want
to fix a problem, that does not exist.

>Use (say) 32-bits
>for the "board arrangement" hash key, and 32-bits for a "move list" hash key,
>packed into one 64-bit hash key. Then you would only match positions that were
>setup the same on the board and also had the same (pseudo) legal moves. Does
>this do anything to solve any problems? Or does it only create new ones?

I think, it should be not better, and possibly is worse. If you set up the board
the same, you will have the same movelist anyway. So this is sort of redundant
information. I know, I phrased this argument way too sloppy ...

Regards,
Dieter





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