Author: Guido
Date: 09:01:21 03/10/02
Some time ago I discussed on CCC about this subject with Bob Hyatt and he very kindly demonstrated to me that the right solution to this problem consisted in the duplication of the positions where a pawn can be ep-captured, so a good solution for this goal can be the use of the first (a1...h1) and the last rank (a8...h8) of the chessboard, where pawns are not normally allowed. For the moment in my program I preferred not to adopt this solution, generating tablebases without ep capture, so my present question is: Does someone know if exist positions in the following endings: KPKP, KXPKP (X = Q, R, B, N), KPPKP where results are different if ep capture is or not considered? Obviously all the positions where ep capture is immediately possible must be excluded. I would like to know how many are such positions and eventually a list of them. Thanks in advance Guido
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