1. A finesse when three or more cards higher than the card finessed are missing.
Needing two tricks in the above suit, and with plenty of entries, South plays a low card from hand planning to play the nine if West follows low. If the nine loses to the king or queen, South can later take a simple finesse of the jack.
2. A computer programme that analyses, on a double-dummy basis, lines of play on a deal; it shows which result in success and which to defeat. Printouts of computer deals often show makeable contracts as computed by Deep Finesse.