Author: pavel
Date: 18:47:31 05/11/02
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On May 11, 2002 at 19:18:16, Daniel Clausen wrote: >>1) Is there any limitation as to how many bitboards I can use per square? > >Not really. I currently use 18 bitboards for just the board presentation. This >is w/o anything for eval. > > >>2) Whats an alternative to bitboard approach? > >A very famous one is 0x88. (you should be able to get info about this in the CCC >archives) Maybe someone can post a good link also to a site which describes some >board representations. (the links I have seem to be outdates :( ) > > >>3) How is it better (if it is)? > >I didn't try them all out, just 3 of them, to be honest. (the 8x8, >representation, the 12x12 and bitboard) I don't think there's an optimal board >representation per se. The important thing is to know the strengths and the >weaknesses of each and code accordingly. For example bitboards are not really >the best choice for simple and/or very fast move generators, but they can be >very helpful in the eval - if used right. But then, 0x88 is also very >attractive.. ah the choices. :) > >Sargon I believe TSCP uses 0x88 format, and I think so does garbil. thanks for the explanations. pavs
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