[Trumpace]

You are south and hold

K, AJ76543, K2, KT3

RHO is dealer and bids 1♠. You decide to overcall 2♥, and partner bids 4♥.

LHO leads the ♣Q and you see:

Scoring: IMPS

Lead ♣Q. Contract 4♥.

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You win the ♣K in hand and plunk down the ♥A.

LHO discards a ♣.

Plan the play.

[Trumpace]

I have edited the hand to make it correct. I had the ♦K in the wrong hand initially.

Adding a new reply to bump the post, just in case a few of you read the older version.

[wclass___]

If RHO has 3♣ you probably cannot do much.

If RHO has less than 3 ♣'s and both aces, then both ♥ and ♠K continuations guarantee contract.

What could happen is that RHO wins your ♠K, cashes ♥K and exits ♣.
Next take in dummy with ♣A, ruff ♠, cross to dummy via ♥, take ♠Q (discarding ♦), and lead your last ♠ (discarding last ♦ from hand) to endplay RHO.

[JavaBean]

Oh wow, this hand is a lot harder if you misread it and think LHO is the one with two hearts. I had written a lengthy explanation of why wclass was wrong, but now I think I agree with his line. You can cash the second club at trick three to avoid looking silly against Adam Meredith, who has A987 K8 AQJ53 65.

On the other hand, then you go down if the ace of diamonds is onside, which still leaves RHO with eleven points so it's not inconceivable. Against a devoted four-card majorite, or someone whom I know to be a joker, I might try my line; but against most players I am with wclass.

[wclass___]

There is other problem with playing ♣ at trick 3.

From bidding it seems very likely that RHO has 6+♠ else his partner would raise him.
He also has 2♥. If he has 6♠2♥3♦2♣ i guess it doesn't matter what you play. But RHO might have perfectly normal hand like ♠AJxxxx ♥Kx ♦AQJx ♣x. Good defender might suspect dangers of being endplayed and win 3rd trick with ♥K and switch to ♦ (with Q) to create an entry for partner to get his ♣ winner.

[Trumpace]

Agree with wclass.