From: Marco Costalba <mcostalba@gmail.com>
Date: Mon, 23 Mar 2009 11:02:15 +0000 (+0100)
Subject: Revert odd depths razoring
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=a9e55d43262d11a916bdfa68cd1de0174d884cd3;ds=sidebyside

Revert odd depths razoring
I have just made a new rule that no modification
that increases pruning is allowed if after 1000 games
ELO is not increased by at least 10 point (was +5 in this case)

Yes, I like this kind of nosense rules :-)
---

diff --git a/src/search.cpp b/src/search.cpp
index d08f698f..0e383837 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1245,8 +1245,8 @@ namespace {
     {
         Value v = qsearch(pos, ss, beta-1, beta, Depth(0), ply, threadID);
         if (   (v < beta - RazorMargin - RazorMargin / 4)
-            || (depth < 3*OnePly && v < beta - RazorMargin)
-            || (depth < 2*OnePly && v < beta - RazorMargin / 2))
+            || (depth <= 2*OnePly && v < beta - RazorMargin)
+            || (depth <=   OnePly && v < beta - RazorMargin / 2))
             return v;
     }