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Subject: Re: Did someone try fixed depth tournaments?

Author: Uri Blass

Date: 19:49:25 04/13/01

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On April 13, 2001 at 22:45:43, Uri Blass wrote:

>On April 13, 2001 at 20:54:46, Robert Hyatt wrote:
>
>>On April 13, 2001 at 00:40:47, Uri Blass wrote:
>>
>>>It is possible to play gmaes at fixed depth under Deep Fritz.
>>>
>>>Did someone try to play tournament between engines at fixed depth in order to
>>>find out which engine earns more from getting more plies and if there is a
>>>diminishing return from bigger depth?
>>
>>
>>This is trivial to solve by induction.  If program A can search to depth=15
>>in 3 minutes, and program B can search to depth=6 in 3 minutes, and the two
>>programs are "equal" at 3 minutes per move, then the program that can only
>>search to depth=6 is going to get more for each ply than the one that can
>>get to 15.  Simple induction.
>
>No
>It is not clear.
>Even if you assume that the programs are equal at all time controls
>
>It is also possible that the 2 programs have the same branching factor when
>program A needs time for the first iteration.
>
>There was a claim that programs with smaller branching factor are better
>programs and that Genius was bad at long time control because of bad branching
>factor.
>
>I think that the main problem of Genius at long time control was the fact that
>it did not do extensions of more than 12 plies.

Unfortunately It cannot be checked easily because of the fact that Genius is not
a fritz engine so I believe that the only way to do matches at fixed depth
between Ganius and other programs is by playing manually.

Uri
>
>I do not say that I can learn from the experiment which program earns more from
>time but I can learn more information if I have also the branching factor of the
>programs at different depthes.
>
>Uri



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