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Use 5% less time on first move

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Stockfish appears to take too much time on the first move of a game and
then not enough on moves 2,3,4... Probably caused by most of the factors
that increase time usually applying on the first move.

Attempts to give more time to the subsequent moves have not worked so
far, but this change to simply reduce first move time by 5% worked.

STC 10+0.1 :
LLR: 2.96 (-2.94,2.94) <0.00,2.00>
Total: 78496 W: 20516 L: 20135 D: 37845
Ptnml(0-2): 340, 8859, 20456, 9266, 327
https://tests.stockfishchess.org/tests/view/663d47bf507ebe1c0e9200ba

LTC 60+0.6 :
LLR: 2.95 (-2.94,2.94) <0.50,2.50>
Total: 94872 W: 24179 L: 23751 D: 46942
Ptnml(0-2): 61, 9743, 27405, 10161, 66
https://tests.stockfishchess.org/tests/view/663e779cbb28828150dd9089

closes https://github.com/official-stockfish/Stockfish/pull/5235

Bench: 1876282
This commit is contained in:
xoto10
2024-05-13 07:19:18 +01:00
committed by Disservin
parent e608eab8dd
commit 2682c2127d
6 changed files with 17 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
src/search.cpp
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@@ -157,7 +157,8 @@ void Search::Worker::start_searching() {
return;
}
main_manager()->tm.init(limits, rootPos.side_to_move(), rootPos.game_ply(), options);
main_manager()->tm.init(limits, rootPos.side_to_move(), rootPos.game_ply(), options,
main_manager()->originalPly);
tt.new_search();
if (rootMoves.empty())