Michael Newman spotted this interesting deal from a Manchester Bridge Club duplicate in January.
South plays in five clubs on a Spade lead, East ducking the spade king to preserve communication.
If South plays ace and another heart ruffing in hand and then plays the club king West will win and a spade to East and a further spade will promote the nine of clubs for West to beat the contract. However, if South pitches a spade on the second heart then communication between East and West is cut and the defence cannot promote the nine of clubs. This is a slightly unusual scissors coup in that it doesn't matter which defender wins the second round of hearts, usually a scissors coup is played to keep a specific defender off lead.
Thanks to Michael Newman who analysed this deal.