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Simplify Return Value Adjustment Condition

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Passed Non-regression STC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 82112 W: 21281 L: 21110 D: 39721
Ptnml(0-2): 258, 9630, 21112, 9795, 261
https://tests.stockfishchess.org/tests/view/67c42528b7226b5d8a2dd3a0

Passed Non-regression LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 182652 W: 46295 L: 46240 D: 90117
Ptnml(0-2): 103, 20025, 51003, 20104, 91
https://tests.stockfishchess.org/tests/view/67c4d56b685e87e15e7c43d8

closes https://github.com/official-stockfish/Stockfish/pull/5925

Bench: 1711791
This commit is contained in:
Shawn Xu
2025-03-02 01:29:38 -08:00
committed by Disservin
parent f9a6d43286
commit 66aee01bb1
1 changed files with 2 additions and 3 deletions
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5
src/search.cpp
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@@ -1406,9 +1406,8 @@ moves_loop: // When in check, search starts here
assert(moveCount || !ss->inCheck || excludedMove || !MoveList<LEGAL>(pos).size());
// Adjust best value for fail high cases at non-pv nodes
if (!PvNode && bestValue >= beta && !is_decisive(bestValue) && !is_decisive(beta)
&& !is_decisive(alpha))
// Adjust best value for fail high cases
if (bestValue >= beta && !is_decisive(bestValue) && !is_decisive(beta) && !is_decisive(alpha))
bestValue = (bestValue * depth + beta) / (depth + 1);
if (!moveCount)