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Subject: Re: Please comment :Strength of Crafty these days

Author: gerold daniels

Date: 21:50:32 10/17/04

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On October 17, 2004 at 13:17:53, Mike Byrne wrote:

>On October 17, 2004 at 12:05:22, Roy Brunjes wrote:
>
>>With so many experts here on computer chess in general, I'm wondering where this
>>group pegs Crafty's playing strength.  I'm confident it is below the top
>>commercial programs, but by how much?  My unofficial guess is 100 rating points
>>weaker, perhaps a bit more.  That would put it somewhere in the 2650 - 2700
>>range (if using SSDF "ratings" as the standard for better or worse).
>>
>>What do others think?  For the sake of comparison, I'll have to assume the same
>>CPU that the SSDF rates the programs using (Athlon 1200 MHz).
>>
>>Roy
>
>The SSDF computer vs computer evidence for Crafty 18.12 points to a rating of
>130 to 200 points below the top 3 or 4 engines in computer vs computer play.  It
>is my belief that against human play, the rating difference will less
>pronounced.  I say this for several reasons.  I believe that most commercial
>programs gear their programs against other programs  - to get high SSDF ratings
>and sell more copies.  Bob Hyatt does not sell Crafty - obtaining high SSDF
>ratings is not a high priority -- no custom book for SSDF etc.  Many of Crafty
>test games are against humans.  Bob has always spent most of his time tuning his
>programs against humans - thus I believe it would do almost as well as
>Shredder/Tiger etc against strictly human competition as the other top programs.
> His Crafty clone , "scrappy" who plays 100% humans I believe proves that point
>more or less - it has always been one the top rated on programs on ICC (although
>since I gave up my membership, I have not checked recently).  I also believe
>that the strictly computer vs computer testing exaggerates differences between
>programs - I call this the "Claude Bloodgood" effect.  Claude Bloodgood was a
>convicted murderer (he murder his mother using an axe ) and served the remaining
>years of his life in the Virginia penitentiary.  He was also perhaps one of the
>strongest chess masters ever to serve a lengthy prison sentence.  While
>incarcerated and playing a limited pool of other incarcerated chess players,
>Claude Bloodgood became the second highest rated player in the USCF rating list.
>
>Since his death and through the internet, the axe-murderer has become world
>famous -- here's a picture of Claude on a Hong Kong Website
>
>http://hk.geocities.com/goodchessclub/peo-bloodgood.html  -- yes he was really
>that scary looking ....he actually got to write several books while in prison -
>they are geared more towards the chess hustler type.
>
>http://www.chesshouse.com/shopexd.asp?id=1887
>
>http://www.chesshouse.com/shopexd.asp?id=1886

thanks for the new books mike.this new program has a lot of exciting moves.
gerold.



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