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

Author: Robert Hyatt

Date: 21:15:25 01/13/06

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On January 13, 2006 at 18:38:35, Branislav Bezak wrote:

>
>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


I don't understand the question.  You just use the "best move" as the first move
to search, but you _still_ search it.  And you should pick up the repetition at
the next ply easily enough...  You don't just take the best move and say "i'll
play that and not search any deeper"...



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