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Simplify Check Extension

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STC:
LLR: 2.96 (-2.94,2.94) [-3.00,1.00]
Total: 32704 W: 6146 L: 6045 D: 20513

LTC:
LLR: 2.96 (-2.94,2.94) [-3.00,1.00]
Total: 146622 W: 19967 L: 20017 D: 106638

Bench: 8245662
This commit is contained in:
VoyagerOne 2016-06-12 00:40:10 -04:00 • committed by Marco Costalba
parent 8e45e70e55
commit 1c0c4db677
1 changed files with 3 additions and 3 deletions
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6
src/search.cpp
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@ -873,9 +873,9 @@ moves_loop: // When in check search starts from here
&& moveCount >= FutilityMoveCounts[improving][depth];
// Step 12. Extend checks
if ( givesCheck
&& ( moveCount == 1
|| (!moveCountPruning && pos.see_sign(move) >= VALUE_ZERO)))
if ( givesCheck
&& !moveCountPruning
&& pos.see_sign(move) >= VALUE_ZERO)
extension = ONE_PLY;
// Singular extension search. If all moves but one fail low on a search of