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Use Color-From-To history stats to help sort moves

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STC:
LLR: 2.95 (-2.94,2.94) [0.00,5.00]
Total: 33502 W: 6498 L: 6223 D: 20781
http://tests.stockfishchess.org/tests/view/578abb940ebc5972faa169e2

LTC:
LLR: 2.95 (-2.94,2.94) [0.00,5.00]
Total: 50782 W: 7124 L: 6832 D: 36826
http://tests.stockfishchess.org/tests/view/578b8e5d0ebc5972faa169fd

LTC: (Sanity test against latest master)
LLR: 2.95 (-2.94,2.94) [0.00,5.00]
Total: 32759 W: 4600 L: 4370 D: 23789
http://tests.stockfishchess.org/tests/view/5798b7d30ebc591c761f5b72

bench: 6985912

P.S. Thanks @mstembera for rewriting my code to make it smp compatible. A BIG thank you!
This commit is contained in:
VoyagerOne
2016-07-25 09:53:18 -04:00
committed by Marco Costalba
parent 85924db496
commit b3525fa9ea
4 changed files with 36 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
src/movepick.cpp
View File

@@ -142,16 +142,20 @@ template<>
void MovePicker::score<QUIETS>() {
const HistoryStats& history = pos.this_thread()->history;
const FromToStats& fromTo = pos.this_thread()->fromTo;
const CounterMoveStats* cm = (ss-1)->counterMoves;
const CounterMoveStats* fm = (ss-2)->counterMoves;
const CounterMoveStats* f2 = (ss-4)->counterMoves;
Color c = pos.side_to_move();
for (auto& m : *this)
m.value = history[pos.moved_piece(m)][to_sq(m)]
+ (cm ? (*cm)[pos.moved_piece(m)][to_sq(m)] : VALUE_ZERO)
+ (fm ? (*fm)[pos.moved_piece(m)][to_sq(m)] : VALUE_ZERO)
+ (f2 ? (*f2)[pos.moved_piece(m)][to_sq(m)] : VALUE_ZERO);
+ (f2 ? (*f2)[pos.moved_piece(m)][to_sq(m)] : VALUE_ZERO)
+ fromTo.get(c, m);
}
template<>
@@ -160,6 +164,8 @@ void MovePicker::score<EVASIONS>() {
// by history value, then bad captures and quiet moves with a negative SEE ordered
// by SEE value.
const HistoryStats& history = pos.this_thread()->history;
const FromToStats& fromTo = pos.this_thread()->fromTo;
Color c = pos.side_to_move();
Value see;
for (auto& m : *this)
@@ -170,7 +176,7 @@ void MovePicker::score<EVASIONS>() {
m.value = PieceValue[MG][pos.piece_on(to_sq(m))]
- Value(type_of(pos.moved_piece(m))) + HistoryStats::Max;
else
m.value = history[pos.moved_piece(m)][to_sq(m)];
m.value = history[pos.moved_piece(m)][to_sq(m)] + fromTo.get(c, m);
}