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Tweak the cutnode depth condition for TT cutoffs

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Passed STC:
https://tests.stockfishchess.org/tests/view/67ab396ab5c93ee812d851f3
LLR: 2.96 (-2.94,2.94) <0.00,2.00>
Total: 83648 W: 21964 L: 21571 D: 40113
Ptnml(0-2): 339, 9779, 21217, 10128, 361

Passed LTC:
https://tests.stockfishchess.org/tests/view/67ab9647133d55b1d3bc171e
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 68160 W: 17551 L: 17166 D: 33443
Ptnml(0-2): 62, 7353, 18870, 7728, 67

closes https://github.com/official-stockfish/Stockfish/pull/5876

Bench: 3087275
This commit is contained in:
Nonlinear2
2025-02-12 00:15:32 +01:00
committed by Disservin
parent 9cc15b3049
commit a4edacb87a
1 changed files with 1 additions and 1 deletions
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src/search.cpp
+1 -1
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@@ -672,7 +672,7 @@ Value Search::Worker::search(
if (!PvNode && !excludedMove && ttData.depth > depth - (ttData.value <= beta) if (!PvNode && !excludedMove && ttData.depth > depth - (ttData.value <= beta)
&& is_valid(ttData.value) // Can happen when !ttHit or when access race in probe() && is_valid(ttData.value) // Can happen when !ttHit or when access race in probe()
&& (ttData.bound & (ttData.value >= beta ? BOUND_LOWER : BOUND_UPPER)) && (ttData.bound & (ttData.value >= beta ? BOUND_LOWER : BOUND_UPPER))
&& (cutNode == (ttData.value >= beta) || depth > 9)) && (cutNode == (ttData.value >= beta) || (depth > 9 || (rootDepth > 10 && depth > 5))))
{ {
// If ttMove is quiet, update move sorting heuristics on TT hit // If ttMove is quiet, update move sorting heuristics on TT hit
if (ttData.move && ttData.value >= beta) if (ttData.move && ttData.value >= beta)