Author: James Swafford
Date: 04:55:34 01/30/02
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On January 29, 2002 at 19:55:03, Albert Silver wrote: >On January 29, 2002 at 12:46:50, Dan Andersson wrote: > >>Yep! But they are potential passed pawns. Then it depends on if you wish to add >>such a factor. >> >>MvH Dan Andersson > >Is code on potential passed pawns common? Or is it too costly to be worth it? > > Albert It can be done pretty easily with bitmaps (bitboards). Last night I created two arrays of bitmaps - passed_white[64] and passed_black[64]. passed_white[E4] has 'bits on' for D5->D8, E5->E8, and F5->F8. THen AND that with black_pawns to see if a white pawn on E4 is passed. That worked much better than what I was originally doing, which was looking only on the file I was on. -- James
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