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Subject: Re: Question for Gerd: reduce rbb lookup tables

Author: Russell Reagan

Date: 14:34:58 07/14/03

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On July 14, 2003 at 17:15:50, Bas Hamstra wrote:

>A while ago, in Leiden, Frans mentioned you had a trick to reduce the rotated bb
>lookup tables by a factor 2, without further disadvantages. It had something to
>do with the edges of the board, some "ray-states" you can ignore. I didn't
>understand his short explanation back then. Could you explain?

Hi Bas,

Out of curiosity, how large are the lookup tables you currently use for rotated
bitboard attack generation?

Thanks,
Russell



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