Not straightforward
West led a Heart v Three Notrumps and East covered dummy’s singleton Queen with the King. Declarer ducked his Ace until the third round (discarding two Diamonds from dummy). Now what?
It made sense to play Spades to lose the finesse to the safe hand (West – with no more Hearts). Declarer crossed to the Ace and ran the Knave. West won his Queen and returned a passive third