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Drop OnlyMoveExt PV-condition from 8 plies to 6 plies

Orig - Mod: 731 - 750

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
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1 parent 25c22ff commit 1a7047f544b29cc16c970df1379752f0541ed90f @zamar zamar committed with Nov 27, 2009
Showing with 1 addition and 1 deletion.
  1. +1 −1 src/search.cpp
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@@ -1169,7 +1169,7 @@ namespace {
// To verify this we do a reduced search on all the other moves but the ttMove,
// if result is lower then TT value minus a margin then we assume ttMove is the
// only one playable. It is a kind of relaxed single reply extension.
- if ( depth >= 8 * OnePly
+ if ( depth >= 6 * OnePly
&& tte
&& move == tte->move()
&& ext < OnePly

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