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Subject: Re: A ply depth vs. ELO question

Author: William H Rogers

Date: 09:51:53 12/09/03

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On December 09, 2003 at 09:37:23, Larry Oliver wrote:

>
>Anyone ever estimated a correlation between ply look-ahead and ELO strength for
>a typical computer/program? Also, as a beginner's learning tool, would setting
>my computer to say 2-ply or 3-ply look-ahead be more benificial than perhaps a
>straight 10 sec think time?
>
>Larry

There was some work done on this years ago and they found that with each
increase of ply depth the program gained between 150 and 200 points in strength.
As the depth got deeper, ie. 6 ply or above the gain was much less.
If you are new to chess, then setting the ply depth to 2 or 3 definately help as
the program can make as good a move as it does at deeper searches. You must
remember also that many of today programs think on your time, that is while you
are thing about the move that you are going to make the program is trying to
figure out which move you might make and what its response should be. Knowing
that being able to turn off the programs thinking on your time should help a
beginner too.
Bill




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