Revert dynamic draw value

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index eb3fc82a40862c24ec907b8bdd53c6d98a34ca08..72ec79e71f3e95539d0b05776147d3d51a040d41 100644 (file)
--- 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);