Author: Richard A. Fowell (fowell@netcom.com)
Date: 12:55:58 01/09/99
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On January 06, 1999 at 17:56:18, Kerry McDermott wrote: >I have a variety of Mac chess programs including all Macchess versions as well >as ChessMaster 300 and 4000. I am running a Mac with a 603e 100Mhz. I would >like to know the approximate ratings of any of these programs particularly at >G/30. I would like to time handicap the programs so that I can play against an >opponent in the 1900 USCF range. I'm pretty convinced about the 75 rating point >reduction for halving the computer's time. The question, of course, is how many >times should I divide the time? > >Thanx > >Kerry Unfortunately, it's an incredible amount of work to get a half-way decent (e.g., accurate to 100 rating points) rating of a chess program, and even then, it depends on what situation you are talking about. However, here are some results on the "CCR 1-hour test" on a 66 MHz 601, which is roughly comparable to your 100 MHz 603e. These ratings might be within 200 points of "truth" for G/30. Speed Doubler was used for 68K programs (marked with "*"), and it made a LOT of difference (speedup of factor 3-5). CM 4000 2530 MacChess 4.0 2430 Sargon V 2400 * Sigma Chess 4 2390 * Grandmaster Ch 2330 MacChess 2.0 2310 * CM3000 2240 * MacChess 1.0 2160 * GNUChess 4.0b5 2020 Psion 1.6 2010 * Richard A. Fowell (fowell@netcom.com)
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