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Document asymmetric SEE pruning trick

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Here are the tests:

sprt @ 60+0.05
ELO: 3.53 +-2.8 (95%) LOS: 99.3%
Total: 18794 W: 3098 L: 2907 D: 12789

16000 @ 60+0.05
ELO: 1.39 +-3.1 (95%) LOS: 81.0%
Total: 16000 W: 2689 L: 2625 D: 10686

16000 @ 15+0.05
ELO: 2.82 +-3.3 (95%) LOS: 95.1%
Total: 16000 W: 3148 L: 3018 D: 9834

No functional change

Signature: 4969307
This commit is contained in:
Joona Kiiski
2013-04-09 09:20:10 +01:00
committed by Marco Costalba
parent c2902112e5
commit d23454854e
3 changed files with 11 additions and 3 deletions
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2
src/position.h
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@@ -161,7 +161,6 @@ public:
int see(Move m) const;
int see_sign(Move m) const;
int see_asymm(Move m, int asymmThreshold) const;
template <bool Asymmetric> int do_see(Move m, int asymmThreshold) const; //FIXME: private!!
// Accessing hash keys
Key key() const;
@@ -195,6 +194,7 @@ private:
// Helper functions
void do_castle(Square kfrom, Square kto, Square rfrom, Square rto);
template<bool Asymmetric> int do_see(Move m, int asymmThreshold) const;
template<bool FindPinned> Bitboard hidden_checkers() const;
// Computing hash keys from scratch (for initialization and debugging)