Author: Matthias Gemuh
Date: 14:34:59 04/05/03
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On April 05, 2003 at 15:32:59, Dieter Buerssner wrote: >On April 05, 2003 at 14:02:09, Russell Reagan wrote: > >>You should only hash the en passant square if it is possible for an enemy pawn >>to execute the en passant capture. This means, ideally, that if there is a pawn >>present to make the capture, but it is pinned and cannot legally make the >>capture, that you should not hash the en passant square. Is this correct? > >Correct, but not practically important. The pinned case will practically never >happen. I checked this (inside the search, and by looking through a database of >- I believe - 2.8 million games. It never happened ...) If it would happen, I >think the consequences are not very critical anyway. > >>4k3/8/8/8/2b5/8/2PP4/4K2R w >> >>Notice that the white king cannot castle since the black bishop attacks f1. If >>this position arose 3 times, but with differing castling rights, then that is >>NOT a draw by repetition. Correct? > >This is also my understanding of the rules. > >>In short, the rules are... > >I agree with your rules. > >Regards, >Dieter And I put the final seal of approval on everything said. /Matthias.
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