contract bridge Contract bridge, or simply bridge, is a trick-taking card game using a standard 52-card deck. In its basic format, it is played by four players in two competing partnerships, with partners sitting opposite each other around a table. Millions ...

and particularly in

duplicate bridge Duplicate bridge is a variation of contract bridge where the same set of bridge deals (i.e. the distribution of the 52 cards among the four hands) are played by different competitors, and scoring is based on relative performance. In this way, eve ...

a convention card is a summary of the conventions and treatments that a particular pair is using. The Laws of Duplicate Bridge specify that "Each partnership has a duty to make available its partnership understandings to opponents before commencing play against them." In games regulated by the

American Contract Bridge League The American Contract Bridge League (ACBL) is a governing body for contract bridge in the United States, Canada, Mexico, and Bermuda. It is the largest such organization in North America having the stated mission ''"to promote, grow and sustain t ...

(ACBL), this is generally done using a form with a standard format. The ACBL ''General Conditions of Contest'' specify that "Each member of a partnership must have a completely filled out convention card available for the opponents." Convention card formats may vary by jurisdiction. There are also various computer programs which a player may use to create and print a convention card.

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{{WPCBIndex Contract bridge