Author: James Swafford
Date: 20:17:46 02/03/00
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On February 03, 2000 at 21:02:38, Tom Kerrigan wrote: >On February 03, 2000 at 14:48:48, James Swafford wrote: > >>I completely agree. I began with a bitmap engine (Tristram), >>which I learned to implement studying Crafty. >> >>Galahad started out that way, but in the spirit of >>experimentation I changed to the "mailbox" method >>shown in TSCP, leaving only pawn bitmaps. I hate it. >>I will likely change back if I ever get the time. >> >>I think the nicest thing about bitmaps is the >>ability to gen only captures, then cycle through >>them before generating noncaps. With any luck, >>noncaps never have to be generated. > >I don't have any strong opinions on the subject, but I think that if you're >going to use bitboards, you should have more of a reason than generating capture >moves a few clock cycles faster... Of course. > >The "mailbox" method is not very good for generating moves. You can also use the >"0x88" method or the method of precalculating every possible move. (Used in GNU >Chess.) > >-Tom
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