Keep low ply history from previous move

[stockfish] / src / thread.cpp

diff --git a/src/thread.cpp b/src/thread.cpp
index 88331f0674e74169e9932924c8c6a7301c8f739c..2e0c216ee1982446571d5b3664263d18b91a3720 100644 (file)
--- a/src/thread.cpp
+++ b/src/thread.cpp
@@ -212,7 +212,6 @@ void ThreadPool::start_thinking(Position& pos, StateListPtr& states,
       th->rootDepth = th->completedDepth = 0;
       th->rootMoves = rootMoves;
       th->rootPos.set(pos.fen(), pos.is_chess960(), &setupStates->back(), th);
-      th->lowPlyHistory.fill(0);
   }
 
   setupStates->back() = tmp;