Author: Laurence Chen
Date: 18:49:04 06/22/99
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On June 22, 1999 at 21:46:02, Terry Ripple wrote: >On June 22, 1999 at 21:32:06, James T. Walker wrote: > >>Hello, >>I believe the mystery of why Hiarcs 7.32 plays better in engine/engine games is >>because of the way Hiarcs does not reset it's hash tables after each move. This >>is an advantage because Fritz does. The result is that Fritz must start it's >>search at ply 1 each time even if it has predicted Hiarcs move because no >>pondering is allowed in engine/engine testing. But because of the way Hiarcs >>uses it's hash when it is Hiarcs turn to move it still has search info in the >>hash memory. So you will see Hiarcs start it's search at something like: >>+-2 (2.68) depth 7/18 00:00:00 27kN. This is almost as good as pondering >>because it saves time in the search. Effectively Fritz is stripped of it's >>"Pondering" while Hiarcs has something almost as good as pondering. Note this >>advantage does not exist in Auto232 operation since Fritz is pondering and when >>it guesses Hiarcs next move it is effectively way ahead in it's search. >> >>Jim Walker >> >>P.S. Any comments welcome. > >I believe that your on to something Jim! Very possible!! > >Terry Ripple Hi James, I believe you're correct. In my engines vs. engines, Hiarcs always comes on top because its pondering is saved and not re-started. But when using autoplayer, or even playing all the moves manually in two different computers, the results are very close, Hiarcs does not have a big edge over Fritz. Laurence
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