Author: Roberto Waldteufel
Date: 10:41:20 11/01/98
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On November 01, 1998 at 10:20:02, Amir Ban wrote: >On October 31, 1998 at 17:50:48, Robert Hyatt wrote: > >> >> >>not much you can do... horizon effect happens anytime you stop the search >>in a non-quiet position... everybody sees it... just get faster.. :) > >I don't agree with this statement. The exposure to horizon effects is what >usually limits a program's strength, more than the depth it can reach. The fact >that it cannot be totally overcome is irrelevant to the fact that limiting its >damage is a first priority. Just getting generally deeper is a poor way to do >that, and not very effective either. > >Amir So what do you do to "limit the damage" of the horizon effect. Do you perform any special quiescence tests other than following captures/pawn promotions and perhaps a few checks beyond the main search? Whereas it may be a crude solution to try to "outrun" the horizon with fast searching, it is the only practical solution of which I am aware. Greater depth makes it less likely, but never impossible, for a horizon misevaluation to propogate back to the root. Roberto
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