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Subject: Re: Calculating Computer Ratings????

Author: Didzis Cirulis

Date: 21:58:00 07/29/98

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>For example Chessmaster 5555 on Kai Luebke's web page
>"http://www.geocities.com/TimesSquare/Ring/8448/chessindex2.html" in 40/2 games
>has won 29 games, drawn 13, lost 11 games.  I gave a flat rating of 2400 to all
>opponents
>
>the calculation went as follows [(29wins * 2400)+(29wins*400)] + [(13draws * 0)+
>(13draws * 2400)] + [(11Loss * 2400)-(11Loss * 400)] = 2535(Chessmaster is a
>MONSTER)

But Chessmaster 5555 IS a monster! Kai just sent me an upgrade of his tournament
info. CM5555 is beating Rebel 9 with score 6:2! How else one can name the
program if not a MONSTER after seeing this score? :-)

>
>This is the standard uscf formula of adding 400 points to opponents ratings for
>wins, and subtracting 400 for losses, then dividing by the number of games
>played for a provisional rating.
>
>The opponents were Rebel9 & 8, Mchess 7, Fritz 5, Hiarcs 4 & 6, crafty 14.8,
>Junior 4.6, and Genius 5.



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