convention card

{{Short description|Agreement between the cooperating players in Bridge}}

In contract bridge and particularly in duplicate bridge a convention card is a summary of the conventions and treatments that a particular pair is using.{{cite book|title=Eddie Kantar Teaches Advanced Bridge Defense|first=Eddie|last=Kantar|page=130|url=https://books.google.com/books?id=rf_wV7GJxRsC&q=convention%20card%20bridge&pg=PA130|isbn=1894154037|year=1999|publisher= Master Point Press|quote=In tournament bridge, the opponents' convention cards are supposed to be marked telling you what their ranges are on the most common notrump sequences.}} 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."{{cite web|url=http://www.acbl.org/assets/documents/play/Laws-of-Duplicate-Bridge.pdf|title=Laws of Duplicate Contract Bridge|at=Law 40 A 1 (b)|access-date=7 October 2013|year=2008|publisher=ACBL|url-status=dead|archive-url=https://web.archive.org/web/20130730164804/http://www.acbl.org/assets/documents/play/Laws-of-Duplicate-Bridge.pdf|archive-date=30 July 2013}}

In games regulated by the American Contract Bridge League (ACBL), this is generally done using a form with a standard format.{{cite web|url=https://www.acbl.org/learn_page/how-to-play-bridge/introduction-to-duplicate/convention-cards/|title=Convention Cards|access-date=27 January 2021|publisher=ACBL}} 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."{{cite web|url=http://www.acbl.org/assets/documents/play/Conditions-of-Contest/General-AllEvents.pdf|title=ACBL General Conditions of Contest for All Events|page=5|date=1 January 2013|access-date=7 October 2013|publisher=ACBL|archive-url=https://web.archive.org/web/20150407140828/http://www.acbl.org/assets/documents/play/Conditions-of-Contest/General-AllEvents.pdf|archive-date=7 April 2015|url-status=dead}} 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.