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Subject: Re: Junior-Crafty hardware user experiment - 2nd game

Author: Uri Blass

Date: 08:10:42 11/24/03

Go up one level in this thread


On November 24, 2003 at 09:07:39, Robert Hyatt wrote:

>On November 24, 2003 at 07:41:16, Daniel Clausen wrote:
>
>>On November 23, 2003 at 17:29:28, Peter Berger wrote:
>>
>>>For information about setup and rules:
>>>http://www.talkchess.com/forums/1/message.html?329237
>>
>>I quote from there:
>>
>>"Saying that the faster computer is about 10 times faster shouldn't be too
>>wrong."
>>and
>>"With this setup Crafty should be the clear favourite I suppose."
>>
>>I don't see why Crafty should be the clear favourite here. When I look at the
>>SSDF list, I see the following ratings:
>>
>>
>>Junior 8.0 256MB Athlon 1200 MHz        2784
>>Crafty 18.12/CB 256MB Athlon 1200 MHz   2615
>>
>>So there's a rating difference of 169 points. A factor of 10 is slightly more
>>than 3 times doubling and if we use 70 points for each doubling (which is the
>>upper limit in my opinion) we get the difference (3*70)-169=41 points.
>>
>>In a match where the first one to reach 6 wins is the winner, that's hardly
>>"clear favourite". It's more like using a dice to decide something. Or am I
>>missing something?
>>
>>Sargon
>
>Yes, he is not using 18.12.  He is using something two years newer.

newer does not mean better in comp-comp games based on experience with Crafty.


Crafty16.19 is the leader of the crafties of the following list

http://www.digichess.gr/infiniteloop/ratings/NIL2_final.txt


It does not prove that Crafty16.19 is really better(not enough games) but it
gives serious doubt if newer Crafty is really better.

I also remember that Crafty16.xx was the Crafty that beated Rebel in 1 hour per
move.

It seems that the commercial programs did big step forward from that time when
Crafty did not do it.

Uri



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