Author: Richard Pijl
Date: 08:18:27 11/21/02
Go up one level in this thread
On November 21, 2002 at 11:07:39, Daniel Clausen wrote: >On November 21, 2002 at 11:04:55, Robert Hyatt wrote: > >>On November 21, 2002 at 08:34:36, Uri Blass wrote: >> >>>1)I do not find in the pseudo code in figure 3 undo null move. >>> >>>I assume that it should be before if value>=beta and after value=-search(...) >>>Am I right? >> >>Remember that a null move is not a move. So it is possible that there is >>nothing to undo. I update the hash signature to avoid a different problem, >>so I have to undo that as you suggest... > >Well, since side-to-move is part of the hash signature, I hope that everyone is >updating something at that point. Or did I miss something? > Not if you have separate hashtables for wtm and btm. But there are other things ... dealing with ep flags, fifty moves rule etc. Richard.
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