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Null move only for depth > OnePly

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Signed-off-by: Marco Costalba <mcostalba@gmail.com>
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Marco Costalba 2008-12-11 16:27:27 +01:00
parent f09884d72f
commit 9e3ab9099f
1 changed files with 1 additions and 0 deletions
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src/search.cpp
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@ -1139,6 +1139,7 @@ namespace {
// Null move search // Null move search
if ( allowNullmove if ( allowNullmove
&& depth > OnePly
&& !isCheck && !isCheck
&& ok_to_do_nullmove(pos) && ok_to_do_nullmove(pos)
&& approximateEval >= beta - NullMoveMargin) && approximateEval >= beta - NullMoveMargin)