From: Stefan Geschwentner <stgeschwentner@gmail.com>
Date: Sat, 24 Jan 2015 21:05:06 +0000 (+0100)
Subject: Fix a skill level problem: Don't allow move pruning at root node
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=d8b3ad2208328e2ed35c34c450b539918ee5c87e

Fix a skill level problem: Don't allow move pruning at root node

Bench: 8918745

Resolves #231
---

diff --git a/src/search.cpp b/src/search.cpp
index da306a1a..0ce836f7 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -831,7 +831,8 @@ moves_loop: // When in check and at SpNode search starts from here
       newDepth = depth - ONE_PLY + extension;
 
       // Step 13. Pruning at shallow depth
-      if (   !captureOrPromotion
+      if (   !RootNode
+          && !captureOrPromotion
           && !inCheck
           && !dangerous
           &&  bestValue > VALUE_MATED_IN_MAX_PLY)