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Subject: Re: Russek -Rebel Match, Game 2

Author: James Robertson

Date: 18:14:03 12/27/99

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On December 27, 1999 at 16:21:56, John Warfield wrote:

>On December 27, 1999 at 16:07:25, Leon Stancliff wrote:
>
>>  I have a win expectancy chart from USCF which gives the expected percentage of
>>wins at various point differentials. The difference in ratings which you have
>>supplied is 105 points. The win expectancy for the higher player in this case is
>>64.6%. 64.6% of six games is 3.8 games. We would expect Rebel Century to win the
>>entire match with either 3 1/2 to 2 1/2 or else 4.0 to 2.0, with more likelihood
>>of 3 1/2 to 2 1/2. As well all know, in a small number of games the variation
>>from the expected percentage can vary widely.
>>  The results from the games Rebel Century has already played at 40/2 against
>>grandmasters and international masters shows just over 2500 for the grandmasters
>>while playing on the AMD 600 and about 2480 when playing on slower hardware
>>against the international masters.
>>  I for one sincerely believe that by the time the Russek match is completed, we
>>will have sufficient evidence to establish a rating for Rebel Century which will
>>be correct within 25 Elo rating points.
>>  I am also keenly interested in seeing what the new alliance of Rebel and Chess
>>Tiger will produce. I really think Rebel is playing just over 2500 Elo on the
>>AMD 600 Mhz. I think those who have been downplaying the ratings of the most
>>powerful programs will be swallowing their adam's apple when Rebel-Tiger takes
>>the stage!
>
>
>   I don't think they will be swallowing their adam's apple, for they will
>always have some excuse tucked away. For instance  1. The humans didn't play
>anti-computer chess So the ratings are bogus  2. Human had a bad cold the
>morning he got up to play the match  3. There was to much noise ect, ect, People
>will come up with all kinds of things in order to avoid being wrong. So I
>wouldn't look forward to your results. Bottom line there will never be any
>satisfactory way of establishing a grandmaster rating for computers if people
>don't want them to be grandmasters. Another way is to say that the computer must
>Earn a 2600 elo to be a real grandmaster, Knowing full well that this is
>impposible since a computer will never be allowed to compete with humans under
>normal tournament conditions.

There is a difference between earning the GM title and being of GM strength. A
computer will have a terrible time earning the title as comps aren't allowed in
nearly all tournaments. Therefore a comp will probably never "be a GM".

As for being of GM strength, that problem is more easily solved. I personnally
think there will be computers of GM strength within a few years. When a computer
can maintain a rating of > 2500 for more than a few games, I'll be convinced.

James



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