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A duplicate bridge movement is a scheme used in a duplicate bridge session to arrange which competitors play which opponents when, and which boards they play. The arrangement has to satisfy various constraints which often conflict to some extent, requiring compromises.
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 ...
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).
In duplicate bridge only, game and partial-game bonuses are awarded at the conclusion of each deal as follows: any partial contract, i.e. one scoring less than 100 contract points, scores a bonus of 50 points, and; any game contract, i.e. one scoring 100 or more points, scores a game bonus of 300 if not vulnerable and 500 if vulnerable.
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 ...
Edwin Cull Howell (1860–1907) was a whist player in America in the late nineteenth century, at a time when the card game bridge was evolving from the card game whist. He devised the movement system bearing his name, for cards and players first used in duplicate whist and subsequently in duplicate bridge. He was also an accomplished ...
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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 ...