(1) Cuebid for spades
The opening lead is the ♦2. East plays the queen and you win the ace. You plunk down the ♣A, cross to a spade, both following, and ruff a club, East producing the queen. You return to dummy with a trump, East discarding a diamond, and lead another low club, East discarding another diamond. You have now arrived at a 100% contract. See it?
The bidding is somewhat cowardly, but you land in 5♣. The opening lead is the ♠Q, East encouraging. Plan the play. Reminder: You are playing IMPs!