Author: Larry Griffiths
Date: 15:07:25 07/02/00
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On July 02, 2000 at 16:05:48, Robert Hyatt wrote: >On July 02, 2000 at 13:24:35, Larry Griffiths wrote: > >>Bob, >> >>Are the RL90, RR45, and RL45 bitboards only maintained for occupied squares? >> >>Larry. > > >Yes... they are only used to determine the 'state' of a rank/file/diagonal, >they aren't needed for anything else??? That is what I thought... Then I will have a bitboard for each type of piece... 6 bitboards for black pieces pawn,knight,bishop,rook,queen,king... 6 bitboards for white pieces pawn,knight,bishop,rook,queen,king... 4 bitboards for occupied squares... 1 bitboard for all black piece types... 1 bitboard for all white piece types... and a move of a black pawn would update the black pawn bitboard all 4 occupied square bitboards (rank,file,Leftdiag,RightDiag) the all black piece types bitboard...
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