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One pair makes a 4 ♠ contract, scoring +620, while the other North/South pairs score −100, −100, −300, and +650, respectively. To determine the average cross-IMP score for the pair making 4 ♠, the table at right is created, entering the contract points scored by each pair.
In the American Contract Bridge League (ACBL), the two tables sharing boards are called a "relay" and the stand that holds the boards that are out of play is called a "bye stand." But in the English Bridge Union (EBU), the two tables sharing boards are called a "share" and the stand that holds the boards that are out of play is called a "relay."
Below is a facsimile of a traveling scoreslip for Board 1 in a five-table matchpoint tournament using a Mitchell movement. All entries are made by competitors except the last two columns which are calculated and completed by tournament staff at the end of the session.
The rules for playing duplicate bridge are formally titled The Laws of Duplicate Bridge and are issued by the World Bridge Federation and its member governing bodies. The Laws are designed to define correct procedure and to provide an adequate remedy when there is a departure from correct procedure.
IMP score is used in competition bridge, including duplicate bridge (including at some online bridge websites), [4] but rarely within any kind of companion bridge, and never if playing rubber bridge. [5] Tactics at IMPs differ from those of matchpoints and are similar to those of rubber bridge.
Getting its name from the Standard Club of Chicago where it originated in the early 1960s, [1] [3] the game is well suited to club and home play. [4] While the auction and the play of the hand are the same as in rubber bridge, Chicago has the following unique features: A rubber consists of exactly four deals.
Conventionally neither 4333 nor 4–3–3–3 indicates which is the four-card suit in a hand while 4=3=3=3 means four spades, represented first, and three each in hearts, diamonds, and clubs. Thus 4=6=2=1 means 4 spades, 6 hearts, 2 diamonds, and 1 club. Distribution points A measure of one hand's strength due to the length or shortness of suits.
In games regulated by the American Contract Bridge League (ACBL), this is generally done using a form with a standard format. [3] 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." [4] Convention card formats may vary by jurisdiction ...