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Subject: Re: Genius3(!)-vs-MChessPro7 result; surprise?!

Author: Ulrich Tuerke

Date: 04:17:11 01/19/99

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On January 19, 1999 at 07:00:40, Harald Faber wrote:

>On January 19, 1999 at 06:44:46, Ulrich Tuerke wrote:
>
>>>So now it is done, 40 games were played with the following result:
>>>
>>>Genius3-MCP7: 9.0-11.0
>>>MCP7-Genius3: 7.0-13.0
>>>
>>>Sum: Genius3(!!) won 22-18.
>>>
>>>Conditions were:
>>>
>>>Genius3:      AMD-K6-200, 32MB hash, tournament book (!)
>>>MChessPro7.1: Intel166MMX, 40MB hash
>>>(Genius3 had 50% speed advantage)
>>>
>>>Who would have expected this result?
>>
>>This is not really a surprise. Genius3 was rated about 2410 on P90 by SSDF. Add
>>another 90 to scale to P200/MMX and you see that G3 and MCP7 are very close, and
>>that's what your match seems to indicate.
>
>OK, if one adds 90 points. But it was not what one could have expected because
>the jump from 486/66->P90 was less than 60 points!
>I'd have expected 50 pts which makes 2460 and 166MMX reduce max. to 2480 (MCP)
>and therefore a close win for MCP.
>
>If you add 90 pts (!) for Genius3 P90->200MMX, it would be higher rated than
>Genius5 in SSDF. :-)))
>(I know, only 4 points but not as worse as one could expect by the huge version
>number difference that should indicate major changes).

I admit that an increase of 90 is probably an overestimate. If I remember
correctly, Thoralf Karlsson obtained an average increase of 75. Nevertheless,
the resulting numbers for P200/MMX will be rather close. Don't forget that you'd
have to play hundreds of games in order to reliably verify a difference of the
order of 40/50 ELO points.

Uli



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