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Singular extension at 8 plies also for PV nodes

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Passed both short TC:
LLR: 2.96 (-2.94,2.94)
Total: 11451 W: 2455 L: 2282 D: 6714

And long TC
LLR: 2.96 (-2.94,2.94)
Total: 15813 W: 2907 L: 2723 D: 10183

bench: 3864419
This commit is contained in:
Lucas Braesch
2013-09-07 09:32:01 +02:00
committed by Marco Costalba
parent c86eee3918
commit 59702aca0d
1 changed files with 1 additions and 1 deletions
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src/search.cpp
+1 -1
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@@ -780,7 +780,7 @@ moves_loop: // When in check and at SpNode search starts from here
singularExtensionNode = !RootNode singularExtensionNode = !RootNode
&& !SpNode && !SpNode
&& depth >= (PvNode ? 6 * ONE_PLY : 8 * ONE_PLY) && depth >= 8 * ONE_PLY
&& ttMove != MOVE_NONE && ttMove != MOVE_NONE
&& !excludedMove // Recursive singular search is not allowed && !excludedMove // Recursive singular search is not allowed
&& (tte->bound() & BOUND_LOWER) && (tte->bound() & BOUND_LOWER)