From bbd69c0260a12cedf2b4d32b9ec3d478270533ce Mon Sep 17 00:00:00 2001
From: Marco Costalba <mcostalba@gmail.com>
Date: Mon, 3 Mar 2014 08:39:34 +0100
Subject: [PATCH] Revert dynamic draw value

When tested with weaker engines did not
performed as expected, actually it was even
a regression from standard version.

bench: 8430785
---
 src/search.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/search.cpp b/src/search.cpp
index eb3fc82a..72ec79e7 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -185,8 +185,7 @@ void Search::think() {
   RootColor = RootPos.side_to_move();
   TimeMgr.init(Limits, RootPos.game_ply(), RootColor);
 
-  // Dynamic draw value: try to avoid repetition draws at early midgame
-  int cf = std::max(70 - RootPos.game_ply(), 0);
+  int cf = Options["Contempt Factor"] * PawnValueMg / 100; // From centipawns
   DrawValue[ RootColor] = VALUE_DRAW - Value(cf);
   DrawValue[~RootColor] = VALUE_DRAW + Value(cf);
 
-- 
2.39.2