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Increase history bonus of TT moves

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Passed STC:
https://tests.stockfishchess.org/tests/view/678807653b8f206a2696b78b
LLR: 2.96 (-2.94,2.94) <0.00,2.00>
Total: 42208 W: 11113 L: 10783 D: 20312
Ptnml(0-2): 148, 4919, 10651, 5227, 159

Passed LTC:
https://tests.stockfishchess.org/tests/view/6788a8463b8f206a2696b956
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 122886 W: 31454 L: 30952 D: 60480
Ptnml(0-2): 105, 13567, 33619, 14025, 127

closes https://github.com/official-stockfish/Stockfish/pull/5791

Bench: 1760081
This commit is contained in:
Nonlinear2
2025-01-18 00:45:10 +01:00
committed by Joost VandeVondele
parent 165ace194f
commit b392ac76db
1 changed files with 7 additions and 4 deletions
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11
src/search.cpp
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@@ -119,7 +119,8 @@ void update_all_stats(const Position& pos,
Square prevSq,
ValueList<Move, 32>& quietsSearched,
ValueList<Move, 32>& capturesSearched,
Depth depth);
Depth depth,
bool isTTMove);
} // namespace
@@ -1380,7 +1381,8 @@ moves_loop: // When in check, search starts here
// If there is a move that produces search value greater than alpha,
// we update the stats of searched moves.
else if (bestMove)
update_all_stats(pos, ss, *this, bestMove, prevSq, quietsSearched, capturesSearched, depth);
update_all_stats(pos, ss, *this, bestMove, prevSq, quietsSearched, capturesSearched, depth,
bestMove == ttData.move);
// Bonus for prior countermove that caused the fail low
else if (!priorCapture && prevSq != SQ_NONE)
@@ -1799,13 +1801,14 @@ void update_all_stats(const Position& pos,
Square prevSq,
ValueList<Move, 32>& quietsSearched,
ValueList<Move, 32>& capturesSearched,
Depth depth) {
Depth depth,
bool isTTMove) {
CapturePieceToHistory& captureHistory = workerThread.captureHistory;
Piece moved_piece = pos.moved_piece(bestMove);
PieceType captured;
int bonus = stat_bonus(depth);
int bonus = stat_bonus(depth) + 300 * isTTMove;
int malus = stat_malus(depth);
if (!pos.capture_stage(bestMove))