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Remove cutNode condition

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cutNode condition seems to be irrelevant.

Passed STC:
LLR: 2.93 (-2.94,2.94) <-1.75,0.25>
Total: 24224 W: 6206 L: 5970 D: 12048
Ptnml(0-2): 69, 2818, 6122, 3014, 89
https://tests.stockfishchess.org/tests/view/65686910136acbc5735529ec

Passed LTC:
LLR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 236538 W: 58624 L: 58622 D: 119292
Ptnml(0-2): 136, 26955, 64091, 26945, 142
https://tests.stockfishchess.org/tests/view/6568925a136acbc573552d8f

closes https://github.com/official-stockfish/Stockfish/pull/4901

Bench: 1244386
This commit is contained in:
FauziAkram 2023-12-04 11:31:16 +01:00 • committed by Disservin
parent 0ff2ea6549
commit 7a8bcfc229
1 changed files with 2 additions and 2 deletions
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4
src/search.cpp
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@ -1207,8 +1207,8 @@ moves_loop: // When in check, search starts here
// Step 18. Full-depth search when LMR is skipped
else if (!PvNode || moveCount > 1)
{
// Increase reduction for cut nodes without ttMove (~1 Elo)
if (!ttMove && cutNode)
// Increase reduction if ttMove is not present (~1 Elo)
if (!ttMove)
r += 2;
// Note that if expected reduction is high, we reduce search depth by 1 here