Author: John Merlino
Date: 12:02:48 12/01/98
Go up one level in this thread
On November 30, 1998 at 02:03:43, Christophe Theron wrote: >On November 30, 1998 at 00:16:47, Reynolds Takata wrote: > >>I attempted to play CM3000(in micro chess layout) against CM4000, CM5500, and >>CM6000. CM3000 was actually winning about 30% of the games! I expected that it >>wouldn't win any, as i have found CM3000 positionally weak, though the tactics >>aren't too bad. These games were on one comp running both progs, how much >>effect should this have? > >If you play programs on one computer, you should disable thinking on opponent's >time on both, or else the result means nothing. > > > Christophe The main problem is verifying that both engines are getting equal CPU time. Unfortunately, this is highly unlikely because Chessmaster 3000 is a DOS application and 4000 and 5500 are Windows applications. Due to the way Windows switches back and forth between DOS applications, it is very unlikely that both programs are getting relatively equal time to think, regardless of whether you have both engines thinking during their opponent's time. Windows tends to give a higher priority to DOS applications, which accounts for CM3000's unexpectedly high win percentage. Turning off "deep thinking" will not make a difference as far as CPU time goes, because Windows switches back and forth between apps very quickly. What it WILL do, however, is make the engines play worse overall. And, I imagine that this is unintended. jm
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