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Subject: Re: 0x88 vs. Bitboard

Author: Dave Gomboc

Date: 23:53:15 08/30/02

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On August 30, 2002 at 17:24:42, Jeremiah Penery wrote:

>On August 30, 2002 at 15:20:36, Robert Hyatt wrote:
>
>>On August 30, 2002 at 11:52:09, Miguel A. Ballicora wrote:
>>
>>>On August 30, 2002 at 08:26:27, Omid David wrote:
>>>
>>>>What's the latest on the "0x88 vs. Boitboard"? Is bitboard still the most
>>>>popular implementation among the top programs? (while Crafty uses bitboards,
>>>>Ferret and DIEP use 0x88 if I remember correctly, right?)
>>>
>>>Ferret does not use 0x88, it uses pre-generated tables according to Bruce
>>>Moreland.
>>>
>>>Miguel
>>
>>
>>I thought he had said he used 0x88 for the board representation, but that
>>he didn't use it for move generation because of the pre-generated tables
>>you mentioned...
>
>From http://ccc.it.ro/search/ccc.php?art_id=189800 :
>
>Ferret's board representation is an array of 64 squares. Each element is pretty
>big. Move generation is accomplished by use of a move table, much expanded from
>the system used in Gnuchess.
>
>Gerbil's board representation is 128 squares, so it can use 0x88.

And Chess Tiger's board representation is 256 squares, so it can...?

Dave



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