Author: José de Jesús García Ruvalcaba
Date: 15:56:09 08/13/99
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On August 13, 1999 at 16:45:56, Peter Fendrich wrote: >On August 13, 1999 at 16:20:13, vitor wrote: > >>hi, >>i know how nullmove pruning works, but could someone please explain how >>recursive nullmove works? is it just doing lots of consecutive nullmoves? >>thanks > >It means that you allow several nullmoves within the same path in the search as >opposed to ensuring that no more Nullmoves will be done below this one. > >Not consecutive, however. It is no good idea to answear a Nullmove with another >one. That will be two "pass" after each other and nothing happens. So no >Nullmoves in the ply directly following a Nullmove, but in the next ply further >down it's ok again. > >//Peter Some people allow two (but not three) consecutive null-moves, in the hope of catching some zugzwangs this way. José.
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