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Subject: draw by repetition when using best move from transposition table entry

Author: Branislav Bezak

Date: 15:38:35 01/13/06



I struggle to prevent my opponent to draw by repetition when I’m using best move
stored in entry in transposition table.

At the beginning of AB function, I check the table, find a nice fat score and
make the best move stored. My opponent makes his move and it's a draw by
repetition. So, I added a code to check all opponent’s possible responses to my
stored best move to see if they are not draw. In that case, I don't use the best
move from hash table but force the full search to pick some other move that will
not allow the opponent to draw. But there are cases where I still cannot prevent
the draw because it is already too late and no matter what I do, my opponent’s
next move is a draw.

What's the best way how to deal with this situation?

Thanks



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