From 5deb26239340a6a1a91d1c2050f90b7a36f9f5d1 Mon Sep 17 00:00:00 2001
From: FauziAkram <fauzi.dabat@hotmail.com>
Date: Sun, 30 Jun 2024 22:24:28 +0300
Subject: [PATCH] Simplify rm.averageScore calculation

Passed STC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 485056 W: 125222 L: 125497 D: 234337
Ptnml(0-2): 1384, 58197, 123614, 57976, 1357
https://tests.stockfishchess.org/tests/view/6681816d442423e54714133f

Passed LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 56622 W: 14301 L: 14115 D: 28206
Ptnml(0-2): 31, 6259, 15538, 6459, 24
https://tests.stockfishchess.org/tests/view/6681a9a5596d543edc677490

closes https://github.com/official-stockfish/Stockfish/pull/5423

bench: 1171203
---
 src/search.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/search.cpp b/src/search.cpp
index b68b3026..f561b183 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1246,7 +1246,7 @@ moves_loop:  // When in check, search starts here
             rm.effort += nodes - nodeCount;
 
             rm.averageScore =
-              rm.averageScore != -VALUE_INFINITE ? (2 * value + rm.averageScore) / 3 : value;
+              rm.averageScore != -VALUE_INFINITE ? (value + rm.averageScore) / 2 : value;
 
             // PV move or new best move?
             if (moveCount == 1 || value > alpha)