From f27339d35b6c8ccd1f83914b334c89111e62f320 Mon Sep 17 00:00:00 2001
From: Guenther Demetz <guenther.demetz@wuerth-phoenix.com>
Date: Thu, 27 Feb 2020 15:58:22 +0100
Subject: [PATCH] Simplify lowply-history logic

Don't restrict usage to ttPv nodes exclusively

STC:
http://tests.stockfishchess.org/tests/view/5e5634f284a82b4acd41499a
LLR: 2.94 (-2.94,2.94) {-1.50,0.50}
Total: 152796 W: 29146 L: 29178 D: 94472
Ptnml(0-2): 2590, 17792, 35628, 17836, 2552

LTC:
http://tests.stockfishchess.org/tests/view/5e575d4984a82b4acd4149e8
LLR: 2.95 (-2.94,2.94) {-1.50,0.50}
Total: 20078 W: 2688 L: 2587 D: 14803
Ptnml(0-2): 139, 1914, 5853, 1973, 160

closes https://github.com/official-stockfish/Stockfish/pull/2565

bench: 4923286
---
 src/search.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/search.cpp b/src/search.cpp
index a32ff4b6..544c3ee5 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -957,7 +957,7 @@ moves_loop: // When in check, search starts from here
                                       contHist,
                                       countermove,
                                       ss->killers,
-                                      depth > 12 && ttPv ? ss->ply : MAX_PLY);
+                                      depth > 12 ? ss->ply : MAX_PLY);
 
     value = bestValue;
     singularLMR = moveCountPruning = false;
-- 
2.39.2