+ return;
+
+ // In case of failing high/low increase aspiration window and
+ // research, otherwise sort multi-PV lines and exit the loop.
+ if (bestValue > alpha && bestValue < beta)
+ {
+ sort<RootMove>(RootMoves.begin(), RootMoves.begin() + PVIdx);
+ sync_cout << uci_pv(pos, depth, alpha, beta) << sync_endl;