Don't split if reduced depth is below min_split_depth

[stockfish] / src / thread.cpp

diff --git a/src/thread.cpp b/src/thread.cpp
index fe7a669b8e66f989d990e89f9e24127afe1848f4..9cd63d9595476eeb2cd37bf2e7c7530a93b83a51 100644 (file)
--- a/src/thread.cpp
+++ b/src/thread.cpp
@@ -313,7 +313,7 @@ Value ThreadsManager::split(Position& pos, Stack* ss, Value alpha, Value beta,
       return bestValue;
 
   // Pick the next available split point from the split point stack
-  SplitPoint* sp = &master->splitPoints[master->splitPointsCnt++];
+  SplitPoint* sp = &master->splitPoints[master->splitPointsCnt];
 
   sp->parent = master->curSplitPoint;
   sp->master = master;
@@ -357,6 +357,8 @@ Value ThreadsManager::split(Position& pos, Stack* ss, Value alpha, Value beta,
               break;
       }
 
+  master->splitPointsCnt++;
+
   lock_release(splitLock);
   lock_release(sp->lock);
 
@@ -434,7 +436,7 @@ void ThreadsManager::start_searching(const Position& pos, const LimitsType& limi
   Signals.stopOnPonderhit = Signals.firstRootMove = false;
   Signals.stop = Signals.failedLowAtRoot = false;
 
-  RootPosition.copy(pos, main_thread());
+  RootPosition = pos;
   Limits = limits;
   RootMoves.clear();