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Subject: Re: Easy moves

Author: Frank Schneider

Date: 02:07:08 04/21/01

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On April 20, 2001 at 15:34:01, Scott Gasch wrote:

>Hi all,
>
>I'm trying to come up with a good algorithm for detecting "easy" moves.  The
>goal is of course to make obvious recaptures faster.
>
>The obvious definition of an easy move is one where the score of the PV move at
>a certain depth is delta better than all the other moves at the root position.
>I use PVS, though, and because of the minimal window search on moves 2..N I
>don't come up with exact scores for some moves.
>
>So I am looking for other definitions... right now I am experimenting with: if
>the first move searched never changed from plys 1-7 and it recaptures on the
>opponent's last move it is "easy".  This scares me a little, though... obviously
>this is not the sort of thing you want to get wrong.  Has anyone come up with a
>clever definition that doesn't involve extra searching?
>
>Thanks,
>Scott

I like the idea Donninger mentioned in an ICCA-article:
check if searching the first move took more nodes than searching all other
moves.

Frank



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