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Skip quiet moves based on moveCount pruning threshold and history stats

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If we can moveCountPrune and next quiet move has negative stats,
then go directly to the next move stage (Bad_Captures).

Reduction formula is tweaked to compensate for the decrease in move count that is used in LMR.

STC:
LLR: 2.96 (-2.94,2.94) [0.00,5.00]
Total: 6847 W: 1276 L: 1123 D: 4448

LTC:
LLR: 2.95 (-2.94,2.94) [0.00,5.00]
Total: 48687 W: 6503 L: 6226 D: 35958

Bench: 5919519

Closes #1036
This commit is contained in:
VoyagerOne
2017-03-18 15:41:55 -07:00
committed by Joona Kiiski
parent c80d52c845
commit 352bd6f5aa
3 changed files with 12 additions and 7 deletions
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2
src/movepick.h
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@@ -95,7 +95,7 @@ public:
MovePicker(const Position&, Move, Depth, Square);
MovePicker(const Position&, Move, Depth, Search::Stack*);
Move next_move();
Move next_move(bool skipQuiets = false);
private:
template<GenType> void score();