Author: John Merlino
Date: 19:31:44 09/06/02
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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
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