The course
The intra-finesse
Step 4 of 4
The same cards, and an auction
The same eight cards, and this time West opened the bidding with a five-card suit of his own. That leaves him eight unknown cards where East has thirteen — so any given card of this suit is likelier to be East's, and any short holding is likelier to be West's.
The line you were told to postpone a screen ago is a bet on exactly that. Play it now.
Take 3 tricks. Vacant places: West 8, East 13.
Dummy
Lead from either hand.
Play a card from either hand. Play the line you would play — nothing here is scored, and you can start the suit again whenever you like.