Author: Thoralf Karlsson
Date: 23:08:38 12/10/99
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On December 10, 1999 at 20:01:28, Chuck wrote: clearly is I think at one time the Mach IV was on the SSDF list at around 2200, but late in it's life it dropped to below 2100. > >Chuck Mach IV entered the 3/89 rating list (89-04-18). It had then 2158 after 128 games. In October -89 (list 6/89) the level of the list was lowered by 70 points, when the last years results against humans were included. By then we had 215 tournament games against Swedish chess players. In Sept -90 we had 57 more games against humans (272 totally) and with these the list was adjusted upwards with 24 points. In August -91 the list was adjusted upwards with one point and was now based on 337 tournament games played between 1987 and 1991. (No more changes of the level has been done since then) So totally the list has been lowered 45 points since Mach IV entered. Which means that with the present level it would have entered the list on 2113 after 128 games (+- 49 points). Today it has 2074 after 1475 games. A total drop of 39 points. Well within the margin of error from the first list. Thoralf Karlsson SSDF
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