From 6f91474e45a63537891fa1a063fb880be6857730 Mon Sep 17 00:00:00 2001
From: PGG106 <giuseppepagano10@gmail.com>
Date: Sun, 20 Oct 2024 20:20:10 +0200
Subject: [PATCH] Remove pv node guard from lmp (#477)

failed STC:
Elo | -2.05 +- 2.30 (95%)
SPRT | 8.0+0.08s Threads=1 Hash=16MB
LLR | -2.30 (-2.25, 2.89) [-3.00, 1.00]
Games | N: 23570 W: 5593 L: 5732 D: 12245
Penta | [86, 2911, 5920, 2792, 76]

passed LTC:
Elo | 0.38 +- 1.50 (95%)
SPRT | 40.0+0.40s Threads=1 Hash=64MB
LLR | 2.92 (-2.25, 2.89) [-3.00, 1.00]
Games | N: 49844 W: 11468 L: 11414 D: 26962
Penta | [24, 5879, 13073, 5911, 35]

Bench: 6899697
---
 src/search.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/search.cpp b/src/search.cpp
index d16fdd8d..c217a5de 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -601,8 +601,7 @@ int Negamax(int alpha, int beta, int depth, const bool cutNode, ThreadData* td,
             if (!skipQuiets) {
 
                 // Movecount pruning: if we searched enough moves and we are not in check we skip the rest
-                if (!pvNode
-                    && totalMoves > lmp_margin[std::min(depth, 63)][improving]) {
+                if (totalMoves > lmp_margin[std::min(depth, 63)][improving]) {
                     skipQuiets = true;
                 }