Author: Omid David Tabibi
Date: 17:42:09 12/18/02
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On December 18, 2002 at 20:34:58, Martin Giepmans wrote: ><snip> >>The tactical strength is not affected by the re-searches. They merely help >avoid >>zugzwangs. > >This is not true, Omid. >Nullmove pruning often overlooks tactical (and positional) threats >that are not related to zugzwang. Because of that some programmers use >(standard) verification search in every phase of the game. > The major improvement comes from the continued search after a fail-high report, which detects tactical errors beyond the horizon of the original null-move search. Re-searches can also contribute to enhancing the middlegame tactical performance, but that additional improvement is usually negligible. >Cheers, >Martin
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