Author: Michael Neish
Date: 20:08:59 12/09/02
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>Are you hashing this stuff right? IE do you have an "en passant possible" >flag you hash into the signature and then remove one ply later? Don't forget >to remove it if you make a null-move... Thanks for your reply. I already found the problem, which was a blindingly stupid one where I was storing ep_square = -1 when making a null move, whether or not it was -1. So on unmaking the null move it was forgetting that en passant was possible. Cheers, Mike.
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