From: Marco Costalba <mcostalba@gmail.com>
Date: Wed, 5 Jan 2011 09:08:25 +0000 (+0100)
Subject: Initialize killers at ss+2 also in root_search()
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=62cd133b3a0697d7960943bb24704c3120506b71;hp=6442981cb649d2008275f12564aeeb69e73f41f5

Initialize killers at ss+2 also in root_search()

After 4955 games:
Mod - Orig: 786 - 768 - 3401 +1 ELO

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
---

diff --git a/src/search.cpp b/src/search.cpp
index 5a358f09..1a8e9ea7 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -702,6 +702,7 @@ namespace {
 
     // Step 1. Initialize node (polling is omitted at root)
     ss->currentMove = ss->bestMove = MOVE_NONE;
+    (ss+2)->killers[0] = (ss+2)->killers[1] = (ss+2)->mateKiller = MOVE_NONE;
 
     // Step 2. Check for aborted search (omitted at root)
     // Step 3. Mate distance pruning (omitted at root)