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Subject: Re: Question for Uri:

Author: Uri Blass

Date: 12:25:53 09/03/00

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On September 03, 2000 at 14:57:31, Jorge wrote:

>Uri - Could you tell me where or what is the fomula which calculates the ELO
>difference between 2 programs based on W-L-T?
>
>Thanks, ;)

I assume that W is the number of wins,L is the number of draws and T is the
number of draws.

In this case
I use the simple formula 400*(W-L)/(W+L+T)

If T is the number of games and is derived from the word total than T is W+L+T
from the previous formual and you can use 400*(W-L)/T

The formula is not exactly correct but the difference relative to the right
non linear formula is usually small(assuming that the difference in ELO is not
more than 400).

Uri



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