+ rootMoves.push_back(Search::RootMove(m));
+
+ Tablebases::filter_root_moves(pos, rootMoves);
+
+ // After ownership transfer 'states' becomes empty, so if we stop the search
+ // and call 'go' again without setting a new position states.get() == NULL.
+ assert(states.get() || setupStates.get());
+
+ if (states.get())
+ setupStates = std::move(states); // Ownership transfer, states is now empty
+
+ StateInfo tmp = setupStates->back();
+
+ for (Thread* th : Threads)
+ {
+ th->maxPly = 0;
+ th->rootDepth = DEPTH_ZERO;
+ th->rootMoves = rootMoves;
+ th->rootPos.set(pos.fen(), pos.is_chess960(), &setupStates->back(), th);
+ }
+
+ setupStates->back() = tmp; // Restore st->previous, cleared by Position::set()