- x
- (lowercase) Any small card, of no trick-taking significance.
- X
- (uppercase) Double, in print or manuscript representation of the auction (alternative to 'Dbl') or the final contract. Used in bidding boxes, private scores, and occasionally elsewhere.
- XX
- (uppercase) Redouble, in print or manuscript representation of the auction (alternative to 'Rdbl' and the like) or the final contract;. Used in bidding boxes, private scores, and occasionally elsewhere.
- X-IMPs
- See Cross-IMPs
- XYZ
- A convention used in an uncontested auction where 3 suits are bid at the one level. Thereafter a 2♣ is a Puppet to 2♦, showing a weak ♦ or an invitational hand. A 2♦ bid is game forcing. A 3♣ shows a weak hand.
- x-y Notrump
- A convention to be used after a sequence like 1x - 1y - 1NT. Thereafter a 2♣ is a Puppet to 2♦, showing a weak ♦ or an invitational hand. A 2♦ bid is game forcing. Also called XYCheckback.
- x-y-z Notrump
- A convention to be used after a sequence like 1x - 1y - (1z) - 1NT, or 1x - (1z) - 1y - 1NT, where z is an opponent's bid. Thereafter a 2♣ is a Puppet to 2♦, showing a weak ♦ or an invitational hand. A 2♦ bid is game forcing. Also called XYZCheckback.
Read more about this topic: Glossary Of Contract Bridge Terms