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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, every hand, whether strong or weak, is played in competition with others playing identical cards, and ...
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. [1] 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."
A traveling scoreslip (also called a traveler) is a form used for recording the results of each deal in a duplicate bridge tournament. [1] In these tournaments, the four hands of each deal are placed into a board so that the same deal can be played by different competitors. Each time the deal (or board) is played, the result is entered into the ...
For example, the English Bridge Union (EBU) now requires that each entrant be "scheduled to play" at least 70% of the deals in play in each session in an individual or pairs game, [1] which, practically means that the number of rounds must be at least 70% of the number of groups of boards in play. The American Contract Bridge League (ACBL ...
In the card game bridge, the law or principle of vacant places is a simple method for estimating the probable location of any particular card in the two unseen hands. It can be used both to aid in a decision at the table and to derive the entire suit division probability table.
This is a list of bidding systems used in contract bridge. [1] [2] Systems listed have either had an historical impact on the development of bidding in the game or have been or are currently being used at the national or international levels of competition. Bidding systems are characterized as belonging to one of two broadly defined categories:
This article describes the contract bridge bidding convention. Devised by Kit Woolsey, [1] the convention is a defense against an opponent's one notrump opening; especially used at matchpoints. Initial bids are as follows:
Each board is usually marked with the following information: board number – (from '1' to as high as '36') identifies the deal and helps to order the play of multiple deals; compass directions – used to match the four hands to the four players at a table; dealer – designates which player is the "dealer"; this designates the player who is to make the first call of the auction ...