From: Marco Costalba <mcostalba@gmail.com>
Date: Fri, 14 Jun 2013 06:24:37 +0000 (+0200)
Subject: Revert "Reduce more CUT nodes only if parent node is reduced"
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=02420d4670e54f41bce5bc6d53fb437b80f9d534

Revert "Reduce more CUT nodes only if parent node is reduced"

This reverts commit d54e8a59551a7ebcbf2c2155dce46c7386b1742a.

It was not proved with SPRT this tweak is stronger. So revert it
for now to follow fishtest guidelines.

bench: 5108393
---

diff --git a/src/search.cpp b/src/search.cpp
index bfab6a4e..a10e1180 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -949,7 +949,7 @@ split_point_start: // At split points actual search starts from here
       {
           ss->reduction = reduction<PvNode>(depth, moveCount);
 
-          if (!PvNode && cutNode && (ss-1)->reduction)
+          if (!PvNode && cutNode)
               ss->reduction += ONE_PLY;
 
           if (move == countermoves[0] || move == countermoves[1])