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Subject: Re: comparing rybka betas

Author: Uri Blass

Date: 11:25:56 01/17/06

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On January 17, 2006 at 14:13:48, James T. Walker wrote:

>On January 16, 2006 at 22:18:00, James C. Logan wrote:
>
>>On January 16, 2006 at 20:04:37, Joseph Ciarrochi wrote:
>>
>>>I just finished some testing between the betas. It was 4 min with 2 sec
>>>increments on a decent pentium. Nooman test set. Default paremeters.  All games
>>>were versus fritz9. There seems to be no significant differences, but it is
>>>critical to not infer too much, given n size is still small and this was against
>>>only one engine.
>>>
>>>best
>>>Joseph
>>>
>>>
>>>
>>>Rybka beta 1      58-42
>>>Rybka  9b          59.5-40.5
>>>rybka 10d          56 - 44
>>
>>Interesting - my feeling is that 10d is slightly weaker against Fritz 9 than
>>Beta 1 was, and that it is a bit stronger against Fruit 2.2.1. I have a database
>>(Chessbase format) with 47 games Rybka 10 vs. F9, and 100 games Rybka 10d vs.
>>Fruit 2.2.1. All games at time controls 4'/40+4'/40/+4'. Rybka 10 and 10d with
>>defaults except using adaptive mode. F9 and Fruit using their own books, Rybka
>>using Perfect 8.32.
>>
>>Scores - +15/-14/=18 vs. F9 , +37/-23/=40 vs. Fruit 2.2.1
>>
>>I will email the .cbv to anyone who wants it.
>
>My first impressions of 10d was that it was no better than the rest.  Now after
>about 350 blitz games it is leading all other Betas by at least 30 Elo in my
>"Rybka only" database.  It's all the Rybka versions vs Fritz 8/Shredder
>9UCI/Fruit 2.2.1/Toga II 1.1/Junior 9 and Chess Tiger 2004.  The games are all
>with ponder on and each program has it's own cpu.  This program looks very
>strong to me.
>Jim

Do you use a book for rybka in your tests.

Uri



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