Fix LazySMP when searching to a fixed depth.

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index a50f7990f2cf20c6e8171f832d16fa2fa40ac170..6b8949569f753b38f1f9ee98960d1a8fba7bdaf9 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -350,6 +350,7 @@ void MainThread::search() {
   Thread* bestThread = this;
   if (   !this->easyMovePlayed
       &&  Options["MultiPV"] == 1
+      && !Limits.depth
       && !Skill(Options["Skill Level"]).enabled()
       &&  rootMoves[0].pv[0] != MOVE_NONE)
   {
@@ -411,7 +412,7 @@ void Thread::search() {
   multiPV = std::min(multiPV, rootMoves.size());
 
   // Iterative deepening loop until requested to stop or the target depth is reached.
-  while (++rootDepth < DEPTH_MAX && !Signals.stop && (!Limits.depth || rootDepth <= Limits.depth))
+  while (++rootDepth < DEPTH_MAX && !Signals.stop && (!Limits.depth || Threads.main()->rootDepth <= Limits.depth))
   {
       // Set up the new depths for the helper threads skipping on average every
       // 2nd ply (using a half-density matrix).
@@ -1006,7 +1007,7 @@ moves_loop: // When in check search starts from here
           Depth r = reduction<PvNode>(improving, depth, moveCount);
           Value hValue = thisThread->history[pos.piece_on(to_sq(move))][to_sq(move)];
           Value cmhValue = cmh[pos.piece_on(to_sq(move))][to_sq(move)];
-          
+
           const CounterMoveStats* fm = (ss - 2)->counterMoves;
           const CounterMoveStats* fm2 = (ss - 4)->counterMoves;
           Value fmValue = (fm ? (*fm)[pos.piece_on(to_sq(move))][to_sq(move)] : VALUE_ZERO);