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Subject: Re: What is the formula for TPR (tournament performance rating)?

Author: Eelco de Groot

Date: 16:18:36 07/19/99

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On July 18, 1999 at 15:03:30, Chuck wrote:

>Is it standard to use the normal provisional rating system to calcualate one's
>tournament performance rating? I.E., win = opponent's rating + 400,
>draw = opponent's rating, loss = opponent's rating - 400?

There were some messages about this here on 23-05-1999, I think you can find
them in the archives (m990531.zip, bottom of the page). In it was also a formula
you can use in Excel, I believe, that works by approximating the area under the
normal distribution function. Useful if you want to make a more exact
calculation. If you are interested in the subject maybe you can find prof. Elo's
book, The Rating of Chessplayers, past and present, by Arpad E. Elo somewhere.
It was published in 1978, ISBN 0-7134-1860-5 by Batsford. Don't know if it is
still in print but it is still well worth reading.

Regards, Eelco.



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