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Add followup moves history for move ordering

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STC:
LLR: 2.96 (-2.94,2.94) [0.00,5.00]
Total: 7955 W: 1538 L: 1378 D: 5039

LTC:
LLR: 2.95 (-2.94,2.94) [0.00,5.00]
Total: 5323 W: 778 L: 642 D: 3903

Bench: 8261839

Resolves #599
This commit is contained in:
Stefan Geschwentner
2016-03-10 10:28:25 +01:00
committed by Joona Kiiski
parent e1a7d135b2
commit a273b6ef8c
3 changed files with 19 additions and 7 deletions
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11
src/movepick.cpp
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@@ -68,8 +68,8 @@ namespace {
/// ordering is at the current node.
MovePicker::MovePicker(const Position& p, Move ttm, Depth d, const HistoryStats& h,
const CounterMoveStats& cmh, Move cm, Search::Stack* s)
: pos(p), history(h), counterMoveHistory(&cmh), ss(s), countermove(cm), depth(d) {
const CounterMoveStats& cmh, const CounterMoveStats& fmh, Move cm, Search::Stack* s)
: pos(p), history(h), counterMoveHistory(&cmh), followupMoveHistory(&fmh), ss(s), countermove(cm), depth(d) {
assert(d > DEPTH_ZERO);
@@ -80,7 +80,7 @@ MovePicker::MovePicker(const Position& p, Move ttm, Depth d, const HistoryStats&
MovePicker::MovePicker(const Position& p, Move ttm, Depth d,
const HistoryStats& h, Square s)
: pos(p), history(h), counterMoveHistory(nullptr) {
: pos(p), history(h), counterMoveHistory(nullptr), followupMoveHistory(nullptr) {
assert(d <= DEPTH_ZERO);
@@ -105,7 +105,7 @@ MovePicker::MovePicker(const Position& p, Move ttm, Depth d,
}
MovePicker::MovePicker(const Position& p, Move ttm, const HistoryStats& h, Value th)
: pos(p), history(h), counterMoveHistory(nullptr), threshold(th) {
: pos(p), history(h), counterMoveHistory(nullptr), followupMoveHistory(nullptr), threshold(th) {
assert(!pos.checkers());
@@ -142,7 +142,8 @@ void MovePicker::score<QUIETS>() {
for (auto& m : *this)
m.value = history[pos.moved_piece(m)][to_sq(m)]
+ (*counterMoveHistory)[pos.moved_piece(m)][to_sq(m)];
+ (*counterMoveHistory)[pos.moved_piece(m)][to_sq(m)]
+ (*followupMoveHistory)[pos.moved_piece(m)][to_sq(m)];
}
template<>