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There are two main categories of scoring: rubber and duplicate. Rubber scoring, and its popular variant Chicago, are mostly used in social play. Duplicate scoring is focused on tournament competition and has many variations that compare and rank the relative performance of partnerships and teams playing the same deals as their competitors.
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 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."
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 A form of bridge where every deal is played at several tables, by several pairs, and their scores on each deal are subsequently compared. A minimum of two tables (four pairs) are required for a duplicate bridge event. Each entry might be a pair, or a team consisting of two or more pairs; the type of scoring varies accordingly.
International match points (IMP) within the card game of contract bridge is a measurement for conversion of the absolute contract bridge scores. The total point difference between two scores is compared to a scale ranging from 1 to 24. [1] [2]
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).
At Chicago or IMP scoring it is generally worth bidding game even with a slightly less than 50% chance of success due to the relatively high value of the bonuses (especially when vulnerable). In duplicate pairs scoring, the subtle difference between a major suit game, a NT game and a minor suit game make the declaration an important decision.