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Subject: Re: About CC-events in the US

Author: Russell Reagan

Date: 14:09:12 11/20/03

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On November 20, 2003 at 16:47:03, Uri Blass wrote:

>The gap between Crafty and Shredder7.04 is 197 elo and even the optimistic
>prediction of 70 elo per doubling the speed do not give it 197 elo.

Some people think 70 ELO is low for a 2x speedup.

http://citeseer.nj.nec.com/ciancarini94comparison.html

"For instance, some experiments found that improving 5 times the running time of
such an algorithm the playing strength of a chess programs improves about 200
Elo points."

Their reference for that is:

K.Thompson, "Computer Chess Strength", Advances in Computer Chess 3, M.R.B.
Clarke (Ed.), Pergamon Press, (1982), 55-56.

That would mean a 2x speedup was worth 80 ELO.



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