From da82942b541b2a6512189a9bad2284c6f45f3c44 Mon Sep 17 00:00:00 2001
From: Nonlinear2 <131959792+Nonlinear2@users.noreply.github.com>
Date: Fri, 22 Nov 2024 11:24:43 +0100
Subject: [PATCH] Add functions to check for decisive scores

Thanks to peregrineshahin and robbyrobbyrob for their suggestions.

closes https://github.com/official-stockfish/Stockfish/pull/5696

No functional change
---
 src/search.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/search.cpp b/src/search.cpp
index 2e904f40..ea43017e 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1042,7 +1042,9 @@ moves_loop:  // When in check, search starts here
                 {
                     if (bestValue <= futilityValue && !is_decisive(bestValue)
                         && !is_win(futilityValue))
-                        bestValue = futilityValue;
+                        if (bestValue <= futilityValue && !is_decisive(bestValue)
+                            && !is_win(futilityValue))
+                            bestValue = futilityValue;
                     continue;
                 }