jirayu_sri/stockfish
1
0
Fork 0
mirror of https://github.com/official-stockfish/Stockfish.git synced 2026-07-22 12:47:08 +00:00
Code Issues Packages Projects Releases Wiki Activity

Simplify correction update condition

Browse Source 
Passed non-regression STC
LLR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 95136 W: 24722 L: 24564 D: 45850
Ptnml(0-2): 307, 11139, 24522, 11289, 311
https://tests.stockfishchess.org/tests/view/68e5034ea017f472e763dc5a

Passed non-regression LTC
LLR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 256440 W: 65854 L: 65873 D: 124713
Ptnml(0-2): 144, 28287, 71375, 28272, 142
https://tests.stockfishchess.org/tests/view/68e71ae4a017f472e763e291

closes https://github.com/official-stockfish/Stockfish/pull/6375

bench 2216361
This commit is contained in:
Daniel Monroe
2025-11-01 11:29:47 +01:00
committed by Joost VandeVondele
parent 013d42914f
commit c9a2aff485
1 changed files with 3 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/search.cpp
+3 -3
View File
@@ -1443,10 +1443,10 @@ moves_loop: // When in check, search starts here
moveCount != 0 ? depth : std::min(MAX_PLY - 1, depth + 6), bestMove, moveCount != 0 ? depth : std::min(MAX_PLY - 1, depth + 6), bestMove,
unadjustedStaticEval, tt.generation()); unadjustedStaticEval, tt.generation());
// Adjust correction history // Adjust correction history if the best move is not a capture
// and the error direction matches whether we are above/below bounds.
if (!ss->inCheck && !(bestMove && pos.capture(bestMove)) if (!ss->inCheck && !(bestMove && pos.capture(bestMove))
&& ((bestValue < ss->staticEval && bestValue < beta) // negative correction & no fail high && (bestValue < ss->staticEval) == !bestMove)
|| (bestValue > ss->staticEval && bestMove))) // positive correction & no fail low
{ {
auto bonus = auto bonus =
std::clamp(int(bestValue - ss->staticEval) * depth / (8 + (bestValue > ss->staticEval)), std::clamp(int(bestValue - ss->staticEval) * depth / (8 + (bestValue > ss->staticEval)),