Coup en passant is a type of coup in contract bridge where trump trick(s) are "stolen" by trying to ruff a card after the player who has the master trump(s).
Just as the trump coup resembles a direct finesse, except that trumps are not the suit led, so the coup en passant similarly resembles an indirect finesse.
NW ES In this example, spades are trump, and declarer (South) takes two tricks by playing hearts first.
The important thing is that declarer must have few enough trumps that dummy can be entered at the critical time.N ES Coup en passant can be performed even with several high trumps in the opponent's hand.
In the example, South would lose all remaining tricks if the lead were in East's hand.