From 94f3cae760f0ed6ab464cf8febd79ebe9925b53a Mon Sep 17 00:00:00 2001
From: nodchip <nodchip@gmail.com>
Date: Thu, 10 Sep 2020 08:23:21 +0900
Subject: [PATCH] Changed a sentence.

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

diff --git a/src/search.cpp b/src/search.cpp
index 6fbfdedf..b92ea7c8 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1012,7 +1012,7 @@ moves_loop: // When in check, search starts from here
       // Step 12. Pruning at shallow depth (~200 Elo)
       if (  !rootNode
 #ifdef EVAL_LEARN
-          && !(!prune_at_shallow_depth_on_pv_node && PvNode)
+          && (PvNode ? prune_at_shallow_depth_on_pv_node : true)
 #endif
           && pos.non_pawn_material(us)
           && bestValue > VALUE_TB_LOSS_IN_MAX_PLY)