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

Another scaling revert

Browse Source 
Revert recent passer because it seems to not scale for longer time
controls. Adjust comments accordingly.

Passed VVLTC SPRT with STC bounds:
https://tests.stockfishchess.org/tests/view/680ddff73629b02d74b15b3f
LLR: 2.95 (-2.94,2.94) <0.00,2.00>
Total: 198316 W: 51317 L: 50846 D: 96153
Ptnml(0-2): 17, 18459, 61737, 18926, 19

Passed VVLTC SPRT with LTC bounds:
https://tests.stockfishchess.org/tests/view/680d5b7e3629b02d74b15a21
LLR: 2.95 (-2.94,2.94) <0.50,2.50>
Total: 123274 W: 31738 L: 31283 D: 60253
Ptnml(0-2): 7, 11444, 38282, 11895, 9

closes https://github.com/official-stockfish/Stockfish/pull/6038

Bench: 2173845
This commit is contained in:
Michael Chaly
2025-05-13 20:32:54 +02:00
committed by Disservin
parent 81cc004060
commit b73c8982df
1 changed files with 2 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/search.cpp
+2 -4
View File
@@ -1244,6 +1244,8 @@ moves_loop: // When in check, search starts here
ss->reduction = 0; ss->reduction = 0;
// Do a full-depth search when reduced LMR search fails high // Do a full-depth search when reduced LMR search fails high
// (*Scaler) Usually doing more shallower searches
// doesn't scale well to longer TCs
if (value > alpha && d < newDepth) if (value > alpha && d < newDepth)
{ {
// Adjust full-depth search based on LMR results - if the result was // Adjust full-depth search based on LMR results - if the result was
@@ -1260,11 +1262,7 @@ moves_loop: // When in check, search starts here
update_continuation_histories(ss, movedPiece, move.to_sq(), 1508); update_continuation_histories(ss, movedPiece, move.to_sq(), 1508);
} }
else if (value > alpha && value < bestValue + 9) else if (value > alpha && value < bestValue + 9)
{
newDepth--; newDepth--;
if (value < bestValue + 4)
newDepth--;
}
} }
// Step 18. Full-depth search when LMR is skipped // Step 18. Full-depth search when LMR is skipped