GIB East plays in 3NT after North and I bid spades.
I lead the 4 of spades. The contract is cold, with necessary stoppers and 9 top tricks once clubs break. GIB ducks the first two rounds of spades and then wins the third. Then it decides to finesse the hearts. Two down.
But wait! GIB North decides to return the ♦A and then the 7, and GIB East makes the contract.
Edit: It was IMPs.

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