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Fill by Subtraction

No change in size, 16:42, 18 May 2018
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'''[[Main Page|Home]] * [[Board Representation]] * [[Bitboards]] * [[Sliding Piece Attacks]] * Fill by Subtraction'''
Performing the [[Subtracting a Rook from a blocking Blocking Piece|o^(o-2r) - trick ]] in a [[SIMD and SWAR Techniques|SWAR-wise]] fashion with bytes (ranks), saves some instructions compared to [[Kogge-Stone Algorithm|Kogge-Stone]].
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Unfortunately it only works in positive horizontal direction, so the possible savings are marginal, despite even less generalization of handling one out of eight cases with a different code pattern.

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