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Subject: Re: Validity of self-play testing

Author: blass uri

Date: 00:40:23 05/22/00

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On May 22, 2000 at 03:37:27, blass uri wrote:

>On May 22, 2000 at 03:22:37, Peter McKenzie wrote:
>
>>Recently I've noticed that my program tends to overvalue pawns, so I've been
>>playing with reducing the pawn value.  How does one test such a change?  Not
>>easily thats for sure!
>>
>>One thing I did was play 150 games vs the old version (new version scored 56% -
>>yay), but I'm a little suspicious about how useful this information is.  For
>>starters the time control was fast (2min + 2sec inc, on P133), although does
>>this really matter for this type of change?
>>
>>I guess I'll probably just go with the new version and keep an eye on its play
>>on ICC...
>>
>>cheers,
>>Peter
>
>I know that Amir Ban found the same thing with Junior5 and this is the reason
>that Junior6a cannot find the famous sacrifice of Junior against nimzo from
>WCCC.
>
>Uri

I am sure that he reduced the value of the pawns
I guess that the reason is that he found similiar results.

I guess that reducing the value of pawns is going to be productive for your
programs in games but not in solving test positions.

Uri



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