From a37b38bdf0ad964363a7fef4b278ccc761a52c52 Mon Sep 17 00:00:00 2001
From: FauziAkram <fauzi.dabat@hotmail.com>
Date: Sat, 2 Aug 2025 14:27:51 +0300
Subject: [PATCH] Add "d < newDepth" condition for doDeeperSearch

Add "d < newDepth" condition for doDeeperSearch

Passed STC:
LLR: 2.97 (-2.94,2.94) <0.00,2.00>
Total: 66144 W: 17512 L: 17148 D: 31484
Ptnml(0-2): 220, 7726, 16833, 8056, 237
https://tests.stockfishchess.org/tests/view/6887cce67b562f5f7b731a79

Passed LTC:
LLR: 2.95 (-2.94,2.94) <0.50,2.50>
Total: 411240 W: 106103 L: 105023 D: 200114
Ptnml(0-2): 256, 44249, 115566, 45257, 292
https://tests.stockfishchess.org/tests/view/6887ec527b562f5f7b731c37

closes https://github.com/official-stockfish/Stockfish/pull/6204

Bench: 2917036
---
 src/search.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/search.cpp b/src/search.cpp
index e151cc796..baf6dfb62 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1233,7 +1233,7 @@ moves_loop:  // When in check, search starts here
             {
                 // Adjust full-depth search based on LMR results - if the result was
                 // good enough search deeper, if it was bad enough search shallower.
-                const bool doDeeperSearch    = value > (bestValue + 43 + 2 * newDepth);
+                const bool doDeeperSearch = d < newDepth && value > (bestValue + 43 + 2 * newDepth);
                 const bool doShallowerSearch = value < bestValue + 9;
 
                 newDepth += doDeeperSearch - doShallowerSearch;