After partner opens 1♦ and supports spades, you key card your way into 6♠.
West leads the ♣Q. Plan the play.
An epic bidding misunderstanding: You open 2♣, partner bids 2♦ (waiting) and then follows up with 3♣ (double negative) over your 2♥ rebid. You now leap to 6♣ thinking partner has clubs. Fortunately, he does! What a way to get to your best slam contract.
West leads the ♦2 (fourth best) to East’s queen and your ace. When you try the ♣K at trick two, East discards a diamond! There is no justice. Undaunted, you continue with the ♣8, which West ducks again, East discarding another diamond. Plan the play from here.