From d4b405a5a6ab47610d7a1b93645ea4a85f941086 Mon Sep 17 00:00:00 2001
From: FauziAkram <fauzi.dabat@hotmail.com>
Date: Sun, 4 May 2025 20:02:58 +0300
Subject: [PATCH] Remove a cutNode condition

Allow some nodes to spawn even deeper lmr searches, also for cutNodes

Passed STC:
LLR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 59072 W: 15387 L: 15190 D: 28495
Ptnml(0-2): 145, 6956, 15166, 7095, 174
https://tests.stockfishchess.org/tests/view/6810b4c13629b02d74b16714

Passed LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 93294 W: 23737 L: 23591 D: 45966
Ptnml(0-2): 47, 10116, 26169, 10274, 41
https://tests.stockfishchess.org/tests/view/681170613629b02d74b167f3

closes https://github.com/official-stockfish/Stockfish/pull/6052

Bench: 1937565
---
 src/search.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/search.cpp b/src/search.cpp
index 81c25fecc..2cab7bd9d 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1237,7 +1237,7 @@ moves_loop:  // When in check, search starts here
             // std::clamp has been replaced by a more robust implementation.
             Depth d = std::max(1, std::min(newDepth - r / 1024,
                                            newDepth + !allNode + (PvNode && !bestMove)))
-                    + (!cutNode && (ss - 1)->isPvNode && moveCount < 8);
+                    + ((ss - 1)->isPvNode && moveCount < 8);
 
             ss->reduction = newDepth - d;
             value         = -search<NonPV>(pos, ss + 1, -(alpha + 1), -alpha, d, true);