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Subject: Re: M-Chess Pro7 : strength ??

Author: Amir Ban

Date: 14:09:31 01/01/98

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On January 01, 1998 at 10:44:52, Chris Whittington wrote:


>There's some data posted here recently. Mchess SSDF game results,
>against Genius, I believe.
>
>Roughly speaking, since I do this from memory:
>
>mchess5 beats genius3 15-5 or so.
>
>genius4 and 5 beat mchess5 15-5 or so
>
>
>The generally accepted argument goes like this: we all know Mchess isn't
>15-5 better than Genius, so the 15-5 result is cooked, due to the books.
>When Genius team has a chance to fix the lines, they turn the result
>round 5-15. Therefore Mchess is cooking books, Mchess is weaker than the
>SSDF results indicate. QED. And, btw, Mchess is 'cooking', Genius is
>'fixing'
>

Sorry to barge on your private conversation. Since I posted something
resembling the above, let's get it straight:

The results on P90 for MCPro6 are:

MCPro6 - CG3   15.5 : 4.5
MCPro6 - CG4   16.5 : 23.5
MCPro6 - CG5   15:5 : 24.5

The last two results are not unusual. They indicate Genius better by 60
and 80 rating points respectively, and are not 95%-significance proof
that Genius is better.

The first result is unusual. It indicates MCPro is better by more than
200 rating points better, and is more than 95%-significance proof that
MChess is better.

MCPro6 was released and listed AFTER all three Genius versions, so there
is no possibility of Genius retaliation taking place.

Make any conclusion you want with this data, but don't distort it.

Amir




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