an elementary knowledge of probabilities. The tables below specify the various prior probabilities, i.e. the probabilities in the absence of any further...

World Bridge Federation. Contract bridge probabilities Both International Match Point and International Matchpoint spellings are common in bridge literature...

follows from Conditional Probability theory, which is based on Bayes Theorem. For a good background to bridge probabilities, and vacant places in particular...

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...

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...

principle of restricted choice is a guideline used in card games such as contract bridge to intuit hidden information. It may be stated as "The play of a card...

Safety play in contract bridge is a generic name for plays in which declarer maximizes the chances for fulfilling the contract (or achieving a certain...

used in contract bridge, using duplicate or rubber scoring. Some of them are also used in whist, bid whist, the obsolete game auction bridge, and other...

In the card game contract bridge, a suit combination is a specific subset of the cards of one suit held respectively in declarer's and dummy's hands at...

used to illustrate a deal of 52 cards in four hands in the game of contract bridge. Each hand is designated by a point on the compass and so North–South...

A (bridge) signal is a move in the card game of contract bridge in which partners defending against a contract play particular cards in a manner which...

Percentage play in contract bridge is a play influenced by mathematical factors when more than one reasonable line of play is available. It is a generic...

Auction bridge was the first form of bridge where players bid to declare a contract in their chosen trump suit or no trumps. It was first recorded as...

Hamilton and Pottage) is one of many defensive bridge bidding conventions used in the card game contract bridge to compete or interfere in the auction when...

The history of contract bridge may be dated from the early 16th-century invention of trick-taking games such as whist. Bridge departed from whist with...

A squeeze play (or squeeze) is a technique used in contract bridge and other trick-taking games in which the play of a card (the squeeze card) forces...

Rubber bridge is a form of contract bridge played by two competing pairs using a particular method of scoring. A rubber is completed when one pair becomes...

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...

devices. In 2018, Bridge Base Online was inducted into the American Contract Bridge League's Hall of Fame for its long-term commitment to bridge. As of February...

A bridge convention is an agreement about an artificial call or a set of related artificial calls. Calls made during the auction phase of a contract bridge...

3" divided by the probability for "host opens door 3". These probabilities can be determined referring to the conditional probability table below, or to...

followed by diamonds, hearts, and spades. This ranking is used in the game of bridge. ♦♣♥♠ Alternating colors Diamonds, followed by clubs, hearts, and spades...

Jacoby transfer, or simply transfers, in the card game contract bridge, is a convention in most bridge bidding systems initiated by responder following partner's...

Stayman is a bidding convention in the card game contract bridge. It is used by a partnership to find a 4-4 or 5-3 trump fit in a major suit after making...

Barry, eds. (2011). The Official Encyclopedia of Bridge (7th ed.). Horn Lake, MS: American Contract Bridge League. ISBN 978-0-939460-99-1. Page 40 of the...

November 1968), known always as 'Gray', was an English professional contract bridge player. For about thirty years from the mid-thirties to the mid-sixties...

Fritzi's bridge is intensely masculine and he-man stuff at that." "Where Rixi Markus is fiery, Fritzi Gordon is icy cold. Where Rixi takes her contracts by...

Duplicate Bridge (also known as the Laws of Duplicate Contract Bridge and the Laws of Contract Bridge) is the official rule book of duplicate bridge promulgated...

A., eds. (1994). The Official Encyclopedia of Bridge (5th ed.). Memphis, TN: American Contract Bridge League. p. 675. ISBN 0-943855-48-9. LCCN 96188639...

A single-suit squeeze is a unique squeeze play in contract bridge that occurs with an awkward defensive distribution of one suit. It contains elements...