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Subject: Re: A question Tony ??

Author: Tony Hedlund

Date: 09:29:32 05/05/99

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On May 04, 1999 at 14:00:39, John Merlino wrote:

>On May 04, 1999 at 13:50:51, jose hernandez wrote:
>
>>
>>Why do you test a Strong program like CHM6000 in a P200 mmx vrs a weak program
>>in a weak machine ??   Is Obvious that CHM6000 always go to win.
>>
>>I dont understand.
>
>This problem has been addressed before, but it has been a little while. You can
>only determine a chess program's rating based on games with other machines that
>already have an established SSDF rating ON A SPECIFIC PROCESSOR. This last part
>is very important. Many SSDF testers do not have two P200 machines, so they test
>one program on a P200 and another on a weaker machine.
>
>The fact that CM6000 is winning most of its games in this case does not
>necessarily mean anything in and of itself. The other factors that go into
>establishing a chess rating are the rating of the opponent AND, most
>importantly, HOW OFTEN they beat their opponents.
>
>Obviously, CM6000 on a P200 is going to beat MCP6 on a P90 in most of the games.
>The important question is: How Often? These factors all go into the equation
>that determines a chess program's rating.
>
>If you look at the latest SSDF list, you can see that CM6000 has played
>generally weaker opponents than Fritz 5.32 (which CM is currently tied with).
>Fritz's opponents have averaged almost 100 points higher. BUT, CM has a much
>higher winning percentage (78% to 66% for Fritz). Therefore, their ratings are
>the same.
>
>jm

A wonderful answer. Thank you jm!

Tony



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