Author: Richard Pijl
Date: 16:22:02 10/06/04
Go up one level in this thread
> >If the reverse move is best after nullmove and if a confirmation search fails, >it might be worth to add some fractional plies. Nullmove's "child" has searched >all successors and found the reverse move as best. > If a verification search fails, it would mean reciprocal zugzwang in the initial position. Perhaps a sign that nullmove should be turned off in the entire (sub)tree? I'm not sure the search should be extended here. Let's first get a good score by searching without nullmove! The fact that the zugzwang is detected means that the search depth is already sufficient Richard.
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