Author: William Penn
Date: 21:47:07 12/08/00
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On December 06, 2000 at 17:04:15, John Merlino wrote: [snip] >-- Fixed a bug that would cause the "Positions" columns in the Thinking Lines >window to display incorrectly after approximately 2.1 billion positions had been >seen. These columns will now "wrap" their values (i.e. display incorrect data) >after approximately 4.2 billion positions, but this is unavoidable. [snip] >jm FYI With CM6000 I often noted that the number of positions limit was about 2.1-2.4 billion after which the counter reverted to all zeros. I never had a reason to try to get the exact number. I sort-of assumed that was what you were talking about with CM8000, but apparently not, because... I had occasion today to let CM8000 analyze a middlegame position and it ran to 2 billion positions. So out of curiousity I let it go a ways further to see if the counter would crash. It didn't. After 2,927,175,680 (almost 3 billion) positions it was still happily counting away, and all systems appeared to be working OK. At that point I aborted it. My impression was that it would count on to infinity, but I didn't have the time to test that notion. :) Possibly the count above 2.1 billion positions was inaccurate, but it appeared to be OK. WP
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