From: Marco Costalba <mcostalba@gmail.com>
Date: Thu, 11 Dec 2008 15:27:27 +0000 (+0100)
Subject: Null move only for depth > OnePly
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=9e3ab9099f056a864c2ac7596bf3474dce8ee167

Null move only for depth > OnePly

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

diff --git a/src/search.cpp b/src/search.cpp
index 2fdc5ad1..a54d41b9 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1139,6 +1139,7 @@ namespace {
 
     // Null move search
     if (    allowNullmove
+        &&  depth > OnePly
         && !isCheck
         &&  ok_to_do_nullmove(pos)
         &&  approximateEval >= beta - NullMoveMargin)