From 6cf7f300acc88df277da64b754c436462f48dadf Mon Sep 17 00:00:00 2001
From: Nonlinear2 <131959792+Nonlinear2@users.noreply.github.com>
Date: Fri, 16 Aug 2024 22:54:05 +0200
Subject: [PATCH] Simplify stand pat adjustement

Remove && !PvNode condition for stand pat adjustement in quiescence search.

Passed non-regression STC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 108544 W: 28228 L: 28085 D: 52231
Ptnml(0-2): 389, 12902, 27554, 13031, 396
https://tests.stockfishchess.org/tests/view/66bb402e4ff211be9d4ee688

Passed non-regression LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 193014 W: 48796 L: 48751 D: 95467
Ptnml(0-2): 188, 21481, 53116, 21542, 180
https://tests.stockfishchess.org/tests/view/66bc78774ff211be9d4ee88f

closes https://github.com/official-stockfish/Stockfish/pull/5538

Bench 1787360
---
 AUTHORS        | 1 +
 src/search.cpp | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/AUTHORS b/AUTHORS
index 1ac40d87..3201e7a8 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -171,6 +171,7 @@ Niklas Fiekas (niklasf)
 Nikolay Kostov (NikolayIT)
 Norman Schmidt (FireFather)
 notruck
+Nour Berakdar (Nonlinear)
 Ofek Shochat (OfekShochat, ghostway)
 Ondrej Mosnáček (WOnder93)
 Ondřej Mišina (AndrovT)
diff --git a/src/search.cpp b/src/search.cpp
index 34190596..b062aa46 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1502,7 +1502,7 @@ Value Search::Worker::qsearch(Position& pos, Stack* ss, Value alpha, Value beta)
         // Stand pat. Return immediately if static value is at least beta
         if (bestValue >= beta)
         {
-            if (std::abs(bestValue) < VALUE_TB_WIN_IN_MAX_PLY && !PvNode)
+            if (std::abs(bestValue) < VALUE_TB_WIN_IN_MAX_PLY)
                 bestValue = (3 * bestValue + beta) / 4;
             if (!ss->ttHit)
                 ttWriter.write(posKey, value_to_tt(bestValue, ss->ply), false, BOUND_LOWER,