Author: Dieter Buerssner
Date: 09:32:27 02/02/05
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On February 02, 2005 at 06:21:36, George Tsavdaris wrote: >Can anyone tell me what the file X-NBW does and what the X-NBB...? Calling them nbw and nbb may be a bit confusing. What really is meant, is that the "left side" kx of kx-kz moves. It could be white or black. So, say white has KQ and black has KR. White moves´: position is found in kqkr.nbw; black moves: position is found in kqkr.nbb. Now assume white has KR and black has KQ. There are no krkq files. White moves: position is found in kqkr.nbw; black moves: position is found in kqkr.nbw. For positions with pawns, some mirroring is needed when looking up positions where black is the "left side". But lots of mirroring is needed internally anyway even for "white left side" positions in general, to use the symmetry of the chess board. Regards, Dieter
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