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Tweak Correction histories

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tune parameters some more, adjust scores updated for each history

passed STC:
https://tests.stockfishchess.org/tests/view/66ea569186d5ee47d953ae48
LLR: 2.92 (-2.94,2.94) <0.00,2.00>
Total: 36288 W: 9660 L: 9344 D: 17284
Ptnml(0-2): 110, 4207, 9220, 4471, 136

passed LTC:
https://tests.stockfishchess.org/tests/view/66ea9b4e86d5ee47d953ae6f
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 241446 W: 61748 L: 61010 D: 118688
Ptnml(0-2): 173, 26211, 67202, 26979, 158

closes https://github.com/official-stockfish/Stockfish/pull/5606

Bench: 1677953
This commit is contained in:
Joost VandeVondele 2024-09-18 06:26:20 +02:00
parent 5d0bb5976e
commit ae420e735f
1 changed files with 11 additions and 7 deletions
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18
src/search.cpp
View file

@ -88,7 +88,8 @@ Value to_corrected_static_eval(Value v, const Worker& w, const Position& pos) {
const auto wnpcv = w.nonPawnCorrectionHistory[WHITE][us][non_pawn_index<WHITE>(pos)];
const auto bnpcv = w.nonPawnCorrectionHistory[BLACK][us][non_pawn_index<BLACK>(pos)];
const auto cv =
(98198 * pcv + 68968 * mcv + 54353 * macv + 85174 * micv + 85581 * (wnpcv + bnpcv)) / 2097152;
(99916 * pcv + 55067 * mcv + 55530 * macv + 95324 * micv + 105056 * (wnpcv + bnpcv))
/ 2097152;
v += cv;
return std::clamp(v, VALUE_TB_LOSS_IN_MAX_PLY + 1, VALUE_TB_WIN_IN_MAX_PLY - 1);
}
@ -1409,12 +1410,15 @@ moves_loop: // When in check, search starts here
{
auto bonus = std::clamp(int(bestValue - ss->staticEval) * depth / 8,
-CORRECTION_HISTORY_LIMIT / 4, CORRECTION_HISTORY_LIMIT / 4);
thisThread->pawnCorrectionHistory[us][pawn_structure_index<Correction>(pos)] << bonus;
thisThread->materialCorrectionHistory[us][material_index(pos)] << bonus;
thisThread->majorPieceCorrectionHistory[us][major_piece_index(pos)] << bonus;
thisThread->minorPieceCorrectionHistory[us][minor_piece_index(pos)] << bonus;
thisThread->nonPawnCorrectionHistory[WHITE][us][non_pawn_index<WHITE>(pos)] << bonus;
thisThread->nonPawnCorrectionHistory[BLACK][us][non_pawn_index<BLACK>(pos)] << bonus;
thisThread->pawnCorrectionHistory[us][pawn_structure_index<Correction>(pos)]
<< bonus * 101 / 128;
thisThread->materialCorrectionHistory[us][material_index(pos)] << bonus * 99 / 128;
thisThread->majorPieceCorrectionHistory[us][major_piece_index(pos)] << bonus * 157 / 128;
thisThread->minorPieceCorrectionHistory[us][minor_piece_index(pos)] << bonus * 153 / 128;
thisThread->nonPawnCorrectionHistory[WHITE][us][non_pawn_index<WHITE>(pos)]
<< bonus * 123 / 128;
thisThread->nonPawnCorrectionHistory[BLACK][us][non_pawn_index<BLACK>(pos)]
<< bonus * 165 / 128;
}
assert(bestValue > -VALUE_INFINITE && bestValue < VALUE_INFINITE);