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Subject: Re: Bitboard VS array board ,speed difference in movegen()

Author: Robert Hyatt

Date: 10:33:11 02/26/01

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On February 26, 2001 at 11:33:19, TEERAPONG TOVIRAT wrote:

>On February 26, 2001 at 09:53:31, Robert Hyatt wrote:
>
>>Are you using the unique ability of bitmaps to generate captures only?  Or in
>>your case, generate only jumps first?  In chess this is a big saver since the
>>q-search is only captures for me.  This avoids having to skip over non-capture
>>moves which takes time...
>
>Dear Dr.Hyatt,
>Yes,I did.  Perhaps,I spend too much time in(un) makemove()  to update
>attack_to ,attack_from information,as Bas's comment.
>Now, I plan to do something differently.
>Thanks for you comment.
>Teerapong


Note that in crafty I don't do the attack_to/attack_from stuff, I dynamically
compute it as needed with the rotated bitmap table lookups...  that might make
a difference.

• Re: Bitboard VS array board ,speed difference in movegen() Severi Salminen 13:21:15 02/26/01
  • Re: Bitboard VS array board ,speed difference in movegen() Robert Hyatt 07:23:08 02/27/01
    • Re: Bitboard VS array board ,speed difference in movegen() Severi Salminen 08:36:43 02/27/01
      • Re: Bitboard VS array board ,speed difference in movegen() Bo Persson 10:36:40 02/27/01
        • Re: Bitboard VS array board ,speed difference in movegen() Severi Salminen 02:58:48 02/28/01
        • Re: Bitboard VS array board ,speed difference in movegen() Dan Andersson 11:19:42 02/27/01

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