Author: Bas Hamstra
Date: 07:47:27 05/31/01
Go up one level in this thread
>I'm not a factor of 3 slower. That is your imagination working. Somethings >are faster in bitmaps, some slower. You want to harp on the move generation. >That is less than 10% of my execution time, so it doesn't count. Evaluation >is very good in bitmaps. For most things, yes, but not everything. If you want to use AttacksTo info heavily, like some tactical programs do, you have a problem doing that with bitboards. You could do it either "on the fly" using a couple of dozens AttacksTo()'s and end up with a *very* low nps. The alternative would be to calculate AttackTo tables (or even keep them incrementally). Now that is a problem with bitboards too. It *can* be done, of course, but as a result for instance Crafty could then divide it's nps by 4 (if not more). (and remember I use bitboards myself) Best regards, Bas.
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