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qsearch: restore pruning of pv nodes with negative SEE

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Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Signed-off-by: unknown <Marco@.(none)>
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Marco Costalba 2008-11-16 23:33:06 +01:00 • committed by unknown
parent da7d872eda
commit 1d525bb45f
1 changed files with 0 additions and 1 deletions
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src/search.cpp
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@ -1430,7 +1430,6 @@ namespace {
// Don't search captures and checks with negative SEE values // Don't search captures and checks with negative SEE values
if ( !isCheck if ( !isCheck
&& !move_promotion(move) && !move_promotion(move)
&& !pvNode
&& (pos.midgame_value_of_piece_on(move_from(move)) > && (pos.midgame_value_of_piece_on(move_from(move)) >
pos.midgame_value_of_piece_on(move_to(move))) pos.midgame_value_of_piece_on(move_to(move)))
&& pos.see(move) < 0) && pos.see(move) < 0)