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Subject: Re: Did someone try fixed depth tournaments?

Author: Peter Kappler

Date: 23:55:41 04/12/01

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On April 13, 2001 at 00:54:03, Dann Corbit 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?
>>
>>I think that it will be intresting to have a rating list of the following
>>programs:
>>
>>Deep Fritz(1 ply)
>>Deep Fritz(2 plies)
>>Deep Fritz(3 plies)
>>...
>>Deep Fritz(10 plies)
>>Deep Fritz(11 plies)
>>Deep Fritz(12 plies)
>>Hiarcs7.32(1 ply)
>>Hiarcs7.32(2 plies)
>>Hiarcs7.32(3 plies)
>>...
>>Hiarcs7.32(10 plies)
>>Gambittiger(x plies)
>>Tiger14(x plies)
>>
>>You can add more programs like Nimzo8 or the latest chessbase version of Crafty.
>>The rating of the programs should be based only on games between different
>>programs so there should not be games between Deep Fritz(6 plies) and Deep
>>Fritz(7 plies) because I remember that when Fritz6 played against itself people
>>criticized the experiment and said that it does not prove diminishing returns
>>from bigger depth.
>
>Two problems:
>1.  Everyone counts depth differently.
>2.  How do you set up a tournament to play fixed depths?
>
>The Crafty goes deep and DarkThought goes deep experiments are the only data I
>have seen published on increasing ply verses ply+1 self-play.
>
>What happened with the Fritz tournament?  Where is the data?


http://supertech.lcs.mit.edu/~heinz/ps/new_exp.ps.gz

This spurred some lively debate here - I'm surprised you missed it.  Be sure to
look through the archives for some good reading.  Can't remember the exact date,
but it was approximately one year ago...

-Peter






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