Author: Robert Hyatt
Date: 19:50:39 04/05/03
Go up one level in this thread
On April 04, 2003 at 22:20:19, Russell Reagan wrote: >On April 04, 2003 at 22:10:16, Robert Hyatt wrote: > >>On April 04, 2003 at 14:40:44, Russell Reagan wrote: >> >>>I would like to know which elements of the position are commonly included in >>>hash signatures, and the issues with including or excluding certain elements. >>>Currently, I am including the board, the side to move, castling rights, and en >>>passant square. >>> >>>I'm not sure how important it is to hash the en passant square, since ep squares >>>regularly exist, but an ep capture is legal only a small percentage of that >>>time. >>> >>>I'm also not sure how important it is to hash the castling rights, since if the >>>castling rights are different, it's likely that the board is too. >> >> >>All are important. I do what you are doing in fact... > >Do you do what others have described in this thread and only hash the ep square >if there is an enemy pawn present to make the ep capture on the next move? Correct...
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