From c475024be75c1d239b6410aa8ec3122fb5b4260c Mon Sep 17 00:00:00 2001
From: Taras Vuk <117687515+TarasVuk@users.noreply.github.com>
Date: Tue, 23 Dec 2025 21:31:48 +0100
Subject: [PATCH] Incorporate statscore into history bonus

Passed STC:
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 80128 W: 20879 L: 20498 D: 38751
Ptnml(0-2): 274, 9318, 20496, 9705, 271
https://tests.stockfishchess.org/tests/view/6945d11f3c8768ca45072218

Passed LTC:
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 134298 W: 34497 L: 33983 D: 65818
Ptnml(0-2): 81, 14334, 37812, 14834, 88
https://tests.stockfishchess.org/tests/view/6947bf033c8768ca45072491

closes https://github.com/official-stockfish/Stockfish/pull/6488

Bench: 2325401
---
 src/search.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/search.cpp b/src/search.cpp
index 9c52592e0..c42fcd4ad 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1824,7 +1824,8 @@ void update_all_stats(const Position& pos,
     Piece                  movedPiece     = pos.moved_piece(bestMove);
     PieceType              capturedPiece;
 
-    int bonus = std::min(116 * depth - 81, 1515) + 347 * (bestMove == ttMove);
+    int bonus =
+      std::min(116 * depth - 81, 1515) + 347 * (bestMove == ttMove) + (ss - 1)->statScore / 32;
     int malus = std::min(848 * depth - 207, 2446) - 17 * moveCount;
 
     if (!pos.capture_stage(bestMove))