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The first Laws of Duplicate Contract Bridge were published in 1928. [1] They were revised in 1933, 1935, 1943, 1949, 1963, 1975, 1987, 1997, 2007 and 2017. [2] The Laws are effective worldwide for all duplicate bridge tournaments sponsored by WBF, zonal, national and subordinate organizations (which includes most bridge clubs).
The American Contract Bridge League (ACBL) is a governing body for contract bridge in the United States, Canada, Mexico, and Bermuda. [1] It is the largest such organization in North America having the stated mission "to promote, grow and sustain the game of bridge and serve the bridge-related interests of our Members."
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 ...
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 duplicate bridge pairs tournaments, the Neuberg formula is a method of adjusting match point scores achieved on boards which have been played fewer times than other boards. Originally developed by Gérard Neuberg of France, its objective is to achieve a formula for the final score of every pair to which each hand they have played contributes ...
No longer printed, it has been incorporated into Bridge Magazine. Contract Bridge Journal, inaugurated in 1946 as the official publication of the English Bridge Union and published until 1955 when its rights were purchased by Thomas De La Rue & Co. and replaced by the British Bridge World from 1956 until 1964 when that publication ceased.
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 ...
The World Bridge Federation (WBF) is the international governing body for contract bridge.. Emulating the organizational concepts of the Olympic movement and its signature five rings, the World Bridge Federation encompasses the five continents (America, Europe, Africa, Asia and Oceania) represented by eight geographic Zonal Conferences.