HCha/Stockfish
1
0
Fork 0
mirror of https://github.com/HChaZZY/Stockfish.git synced 2025-12-06 10:53:50 +08:00
Code Issues Packages Projects Releases Wiki Activity

Improve quiet moves bonus

Browse Source 
Inspired by an old test by Peregrine.

Passed STC:
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 453024 W: 117244 L: 116316 D: 219464
Ptnml(0-2): 1336, 53355, 116258, 54171, 1392
https://tests.stockfishchess.org/tests/view/680ccacc3629b02d74b15532

Passed LTC:
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 140550 W: 35990 L: 35462 D: 69098
Ptnml(0-2): 65, 15152, 39319, 15668, 71
https://tests.stockfishchess.org/tests/view/680d2ed73629b02d74b15691

closes https://github.com/official-stockfish/Stockfish/pull/6028

Bench: 1708152
This commit is contained in:
FauziAkram
2025-04-27 14:42:35 +03:00
committed by Disservin
parent 37cc2293ef
commit f98c178960
1 changed files with 2 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
src/search.cpp
View File

@@ -839,7 +839,8 @@ Value Search::Worker::search(
}
// Use static evaluation difference to improve quiet move ordering
if (((ss - 1)->currentMove).is_ok() && !(ss - 1)->inCheck && !priorCapture)
if (((ss - 1)->currentMove).is_ok() && !(ss - 1)->inCheck && !priorCapture
&& (ttData.depth - 2) <= depth)
{
int bonus = std::clamp(-10 * int((ss - 1)->staticEval + ss->staticEval), -1950, 1416) + 655;
thisThread->mainHistory[~us][((ss - 1)->currentMove).from_to()] << bonus * 1124 / 1024;