Revert dynamic draw value

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index da22c5cff066f505ba5eed5537904fc0ed97d32b..72ec79e71f3e95539d0b05776147d3d51a040d41 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -185,6 +185,10 @@ void Search::think() {
   RootColor = RootPos.side_to_move();
   TimeMgr.init(Limits, RootPos.game_ply(), RootColor);
 
+  int cf = Options["Contempt Factor"] * PawnValueMg / 100; // From centipawns
+  DrawValue[ RootColor] = VALUE_DRAW - Value(cf);
+  DrawValue[~RootColor] = VALUE_DRAW + Value(cf);
+
   if (RootMoves.empty())
   {
       RootMoves.push_back(MOVE_NONE);
@@ -206,16 +210,6 @@ void Search::think() {
       }
   }
 
-  if (Options["Contempt Factor"] && !Options["UCI_AnalyseMode"])
-  {
-      int cf = Options["Contempt Factor"] * PawnValueMg / 100; // From centipawns
-      cf = cf * Material::game_phase(RootPos) / PHASE_MIDGAME; // Scale down with phase
-      DrawValue[ RootColor] = VALUE_DRAW - Value(cf);
-      DrawValue[~RootColor] = VALUE_DRAW + Value(cf);
-  }
-  else
-      DrawValue[WHITE] = DrawValue[BLACK] = VALUE_DRAW;
-
   if (Options["Write Search Log"])
   {
       Log log(Options["Search Log Filename"]);
@@ -668,7 +662,7 @@ namespace {
         && !ss->skipNullMove
         &&  abs(beta) < VALUE_MATE_IN_MAX_PLY)
     {
-        Value rbeta = beta + 200;
+        Value rbeta = std::min(beta + 200, VALUE_INFINITE);
         Depth rdepth = depth - ONE_PLY - 3 * ONE_PLY;
 
         assert(rdepth >= ONE_PLY);