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Subject: Re: Kasparov 3447 PF ??

Author: James T. Walker

Date: 16:41:03 10/03/03

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On October 03, 2003 at 01:33:31, Martin Andersen wrote:

>On October 03, 2003 at 00:36:39, Sietel Monic wrote:
>
>>It is 3447, amazing huh
>
>Actually you can't calculate the performance when the score
>is 100%. Not if you are following the ELO system.

Actually you can.  The performance rating is basically the average of the
opponents + 400 points assuming all were wins.  The performance rating formula
is very simple and not the same as the actual Elo rating you get after say 24
games.
It's Rp=Rc + 400(W-L)/N
Rp=Performance rating
Rc=Opponents average rating
W=wins
L=loses
N=total number of games played
So his would be about 3047 and not 3447
Jim



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