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Subject: Re: ISR League TPR's

Author: blass uri

Date: 12:45:10 05/21/00

Go up one level in this thread


On May 21, 2000 at 15:03:48, Chris Carson wrote:

>Note that the rating for Kogan is 2277
>not 2445 (B. Kogan from ISR not USA).
>
>ISR200:
>Program  HW            TPR  Opp   W  D L Tot
>Reb-Cen  P3x500        2505 2355  4  3 1  8
>DJ 6     multi         2496 2256  3  2 0  5
>Fritz 6  K7x500        2384 2317  2  3 1  6
>Shred 4  P3x500        2364 2284  3  1 1  5
>
>Rebel GM Challenge:
>Reb-Cen  3xx to 1GHZ   2491 2509  5 11 6 22
>
>TPR = Opp + (400*((W-L)/Tot))

This is illogical formula because you have to achieve more than 100% if the
difference in rating is more than 400 and it is impossible.

performance of programs based on this illogical formula:

Shredder4 get 2480.285714... based on this formula and the right number could be
2594.57... if the operator was responsible in the last game(I think that if
people use the results to decide which program to buy than it is better to count
the last game as a win because it is not important for the customers if one
operator is better and it is clear that shredder could win without operator
errors).

I think that for the same reason people should not count the game that Rebel
lost against Shredder and I find it unfair that part of the chess players in
Israel read that Rebel lost against Shredder without getting the information
about the reason so maybe counting the last game as a win is justice because
shredder enjoyed from something that it did not deserve to enjoy.

If you count the last game as a win for shredder then the performance of
shredder is 2630.6 if you count only the games against players with rating above
2230.6(shredder won the other games).

The performance of Fritz6 based on the Israeli league is 2393.8888

Uri



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