The Vice is an advanced squeeze in contract bridge. Its distinguishing motive is presence of a "vice" menace in one suit, where one defender holds cards of equivalent rank which split the declarer's pair of cards in front of him, where his partner has a winner in the suit. It was first attested by Terence Reese in the book "The Expert Game", a.k.a. "Master Play in Contract Bridge". In other words, the defenders have a "high" finesse position, equivalent to the one in diagram:
| K10 | ||
| QJ | W N↑ S↓ E | Ax |
| xx |
If West can be forced to abandon QJ, the defenders will take only one trick in the suit.
A similar motive is encountered in guard squeezes, however, in the vice, the defenders have a winner in the suit. Since that winner will take a trick, this squeeze is without the count.
| ♠ | — | ||||
| ♥ | K 10 4 | ||||
| ♦ | — | ||||
| ♣ | — | ||||
| ♠ | — | N |
♠ | — | |
| ♥ | Q J | ♥ | A 9 7 | ||
| ♦ | 10 | ♦ | — | ||
| ♣ | — | ♣ | — | ||
| South to lead | ♠ | 5 | |||
| ♥ | 3 | ||||
| ♦ | 8 | ||||
| ♣ | — | ||||
Hearts are the "vice suit", and the second menace is the declarer's ♦8. This is a position akin to automatic simple squeeze. When South leads the high ♠5, West must not discard the ♦10; when he parts with a heart honor, declarer leads the heart and East must cede the last trick to dummy's heart ten.
| ♠ | — | ||||
| ♥ | K 10 | ||||
| ♦ | K 5 | ||||
| ♣ | — | ||||
| ♠ | — | N |
♠ | — | |
| ♥ | Q J | ♥ | A 9 | ||
| ♦ | 10 9 | ♦ | 7 4 | ||
| ♣ | — | ♣ | — | ||
| ♠ | 5 | ||||
| ♥ | 3 | ||||
| ♦ | 8 2 | ||||
| ♣ | — | ||||
When the second menace (diamonds) is in dummy, it must be a two-card menace accompanied by an entry, otherwise West can safely abandon the suit; if the ♦K were absent, the West can discard the diamond winner, as the declarer will not have the entry to enjoy it.