From d942e13398aa5de55224c7d81bfad6b0f5b9e488 Mon Sep 17 00:00:00 2001
From: Daniel Samek <samekda3@fit.cvut.cz>
Date: Mon, 31 Mar 2025 18:27:36 +0200
Subject: [PATCH] Less fail high cnt in the condition

Passed STC:
https://tests.stockfishchess.org/tests/view/67e027538888403457d87535
LLR: 2.93 (-2.94,2.94) <0.00,2.00>
Total: 164000 W: 42535 L: 42034 D: 79431
Ptnml(0-2): 478, 19228, 42113, 19677, 504

Passed LTC:
https://tests.stockfishchess.org/tests/view/67e3c21b8888403457d87808
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 139176 W: 35500 L: 34975 D: 68701
Ptnml(0-2): 54, 15038, 38898, 15525, 73

closes https://github.com/official-stockfish/Stockfish/pull/5960

Bench: 1921404
---
 AUTHORS        | 1 +
 src/search.cpp | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/AUTHORS b/AUTHORS
index a345bb69f..092980fe5 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -58,6 +58,7 @@ Daniel Axtens (daxtens)
 Daniel Dugovic (ddugovic)
 Daniel Monroe (Ergodice)
 Dan Schmidt (dfannius)
+DanSamek
 Dariusz Orzechowski (dorzechowski)
 David (dav1312)
 David Zar
diff --git a/src/search.cpp b/src/search.cpp
index 7a1a36100..5f5934a49 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1215,7 +1215,7 @@ moves_loop:  // When in check, search starts here
             r += 1171 + (depth < 8) * 985;
 
         // Increase reduction if next ply has a lot of fail high
-        if ((ss + 1)->cutoffCnt > 3)
+        if ((ss + 1)->cutoffCnt > 2)
             r += 1042 + allNode * 864;
 
         // For first picked move (ttMove) reduce reduction