Author: James Robertson
Date: 13:00:11 10/06/98
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On October 06, 1998 at 15:06:32, John Coffey wrote: >It seems to me that you get limited information from bitboards. You >can find out if any white pieces attack black pieces and vice-a-versa. > >What if you want to know who has the greatest mobility? (i.e. the most >number of legal moves) You would have to count bits would you not? >Is there a fast way to count bits by have table look ups? (i.e. >take 16 bits at a time and look up the bit count in a table?) That is the way Arasan does it. However, Crafty uses an ingenious method, which I borrowed (I love tricks I can barely understand). :) > >If you want to know who controls the most squares around an enemy king then you >would have to count bits again? > >If you wanted to know who controlled what squares, then it would seem that >you would be out of luck with bitboards. > >John Coffey
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