From 2757269a52eb8f4d84474c047793e08dc9332592 Mon Sep 17 00:00:00 2001
From: cj5716 <125858804+cj5716@users.noreply.github.com>
Date: Tue, 13 Feb 2024 17:46:37 +0800
Subject: [PATCH] Simplify PV node reduction

Reduce less on PV nodes even with an upperbound TT entry.
---
 src/search.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/search.cpp b/src/search.cpp
index 28f1e88e..4ee38683 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1002,7 +1002,7 @@ Value Search::Worker::search(
             r++;
 
         // Decrease reduction for PvNodes (~3 Elo)
-        if (PvNode && tte->bound() != BOUND_UPPER)
+        if (PvNode)
             r--;
 
         // Increase reduction if next ply has a lot of fail high (~5 Elo)