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Subject: Re: CM9000 question of rating

Author: John Merlino

Date: 19:43:57 09/06/02

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On September 06, 2002 at 22:31:44, John Merlino wrote:

>On September 06, 2002 at 22:08:17, James T. Walker wrote:
>
>>I seem to recall John saying that CM9K had improved it's rating by about 30
>>points.  When checking the rating that CM9K gives itself on my 1.4G machine it
>>says 2829.  When checking the rating of CM8K it says 2878.  What gives?  Also
>>some of the personalities ratings have changed.  Did you do a complete new
>>calibration?
>>Jim
>
>We adjusted the base rating of the engine upwards by 30 points, but we also
>adjusted (improved?) the math used to calculate how many points are added based
>on your CPU speed.
>
>This is covered in the CM9000 FAQ, which will be posted early next week. It
>says:
>
>Q: Why is the rating of the Chessmaster personality (and some other
>personalities) lower in Chessmaster 9000 than it was in previous versions?
>A: The engine in Chessmaster 9000 is believed to be noticeably stronger than the
>ones in previous versions of Chessmaster. However, some innaccuracies in the way
>that the ratings were calculated were corrected for Chessmaster 9000. So, the
>lower rating for the Chessmaster personality does not mean that the new engine
>is weaker, but rather that the new rating is more accurate.
>
>jm

Oh, yes, and I forgot to mention that we DID also modify several of the "human"
personalities to make them completely different than they were in CM8000.

jm



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