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Simplify TT Move History

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Part 1 passed Non-regression STC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 195552 W: 50394 L: 50349 D: 94809
Ptnml(0-2): 581, 23222, 50122, 23273, 578
https://tests.stockfishchess.org/tests/view/67eb6ea831d7cf8afdc44c30

Part 2 passed Non-regression STC:
LLR: 2.92 (-2.94,2.94) <-1.75,0.25>
Total: 181664 W: 46786 L: 46727 D: 88151
Ptnml(0-2): 517, 21403, 46974, 21380, 558
https://tests.stockfishchess.org/tests/view/67eb6f3331d7cf8afdc44c33

Passed Non-regression LTC:
LLR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 155454 W: 39496 L: 39412 D: 76546
Ptnml(0-2): 77, 16950, 43580, 17052, 68
https://tests.stockfishchess.org/tests/view/67eee76531d7cf8afdc45358

Passed Non-regression VLTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 118266 W: 30263 L: 30148 D: 57855
Ptnml(0-2): 11, 11844, 35309, 11957, 12
https://tests.stockfishchess.org/tests/view/67f2414a31d7cf8afdc45760

closes https://github.com/official-stockfish/Stockfish/pull/5987

Bench: 1792850
This commit is contained in:
Shawn Xu
2025-03-31 21:33:40 -07:00
committed by Disservin
parent d2d046c2a4
commit 2b4926e091
2 changed files with 8 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/history.h
View File

@@ -166,7 +166,7 @@ struct CorrHistTypedef<NonPawn> {
template<CorrHistType T>
using CorrectionHistory = typename Detail::CorrHistTypedef<T>::type;
using TTMoveHistory = Stats<std::int16_t, 8192, PAWN_HISTORY_SIZE, COLOR_NB>;
using TTMoveHistory = StatsEntry<std::int16_t, 8192>;
} // namespace Stockfish

14
src/search.cpp
View File

@@ -579,7 +579,7 @@ void Search::Worker::clear() {
minorPieceCorrectionHistory.fill(0);
nonPawnCorrectionHistory.fill(0);
ttMoveHistory.fill(0);
ttMoveHistory = 0;
for (auto& to : continuationCorrectionHistory)
for (auto& h : to)
@@ -1151,10 +1151,10 @@ moves_loop: // When in check, search starts here
if (value < singularBeta)
{
int corrValAdj1 = std::abs(correctionValue) / 248873;
int corrValAdj2 = std::abs(correctionValue) / 255331;
int doubleMargin = 262 * PvNode - 188 * !ttCapture - corrValAdj1
- ttMoveHistory[pawn_structure_index(pos)][us] / 128;
int corrValAdj1 = std::abs(correctionValue) / 248873;
int corrValAdj2 = std::abs(correctionValue) / 255331;
int doubleMargin =
262 * PvNode - 188 * !ttCapture - corrValAdj1 - ttMoveHistory / 128;
int tripleMargin =
88 + 265 * PvNode - 256 * !ttCapture + 93 * ss->ttPv - corrValAdj2;
@@ -1450,8 +1450,8 @@ moves_loop: // When in check, search starts here
bestMove == ttData.move, moveCount);
if (!PvNode)
{
int bonus = (ttData.move == move) ? 800 : -600 * moveCount;
ttMoveHistory[pawn_structure_index(pos)][us] << bonus;
int bonus = (ttData.move == move) ? 800 : -870;
ttMoveHistory << bonus;
}
}