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Subject: Re: Ply Depth and Strength

Author: Dann Corbit

Date: 12:43:12 11/18/99

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On November 18, 1999 at 15:38:56, James Robertson wrote:

>On November 18, 1999 at 14:34:24, Dann Corbit wrote:
>
>>On November 18, 1999 at 14:06:35, Joshua Lee wrote:
>>
>>>Hello  i was wondering who out there in CCC land is rated the highest would care
>>>to do an experiment? If so set Hiarcs 7.32 to a ply depth of 1 and go from
>>>there.... play lets say 4 to 10 games at each ply depth and write down your
>>>results. This would really tell us all possibly how strong at what ply the comp
>>>is. This way the speed of the computer is irrelevant.
>>
>>It should be necessary to play at least one hundred games even to get a feel for
>>it.  *Especially* at those extremely shallow depths.
>>
>>I suspect all top programs will be about the same for a given ply.
>
>This is not true..... if a program does more extensions then another program, it
>'sees' more with each ply, but each ply takes longer.
>
>For instance, a game with 8-ply Fritz and 8-ply CM would be a pushover for CM
>because it sees a lot more with each ply.
True.  I was assuming that by some stroke of magic we could have programs report
plies actually searched and not use extensions that search more deeply in
special areas like exchanges, etc.



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