You have finesse possibilities in three suits, and you are playing IMPs. Even if the diamond finesse loses, you still have a chance if either the heart or club finesse works. But a great IMP player like you has to assume all three finesses will lose and see if you can still come up with a 100% line of play, assuming West is the defender with five spades (as indicated by the carding). It can be done, and this is how.
Lead the ♥J at trick three! This is the key play. Say West wins and shifts to a high club, best defense. Go up with the ♣A, return to your ♥A and run the ♦Q. Say it loses. Not much the defense can do at that point. If a spade is returned, you have nine tricks: four diamonds, two spades, two hearts and the ♣A. Even if West has the ♣K and a club is returned, you still have nine tricks. Notice that if you had taken the diamond finesse before leading the ♥J, down you go. East wins and clears spades, and now West has the ♥K as an entry to run spades.
