You Snooze, You Lose
You are North, the declarer in 4♥. East leads the ♦K. Play the first 5 tricks.
Scroll down for the full hand, a suggestion/solution and/or explanation
The Entire Deal
Gino's Suggestion and a Short Explanation
Plan to quickly discard your diamond losers on dummy's spade winners. Timing is important. Prioritize discarding over drawing the trump. Why? After winning the ♦A, playing trump first would be a mistake - You lose the imitative to defender's ♥A when your diamond losers are unprotected (having already played the ♦A).
Trick 1: ♦A
Trick 2: ♠J>>♠Q (overtaking is required without a quick transportation)
Trick 3+4: ♠AK>> ♦32 (discard the losers in diamond)
Trick 5: ♥ (now draw the trump)