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Inverted minors refers to a treatment introduced by the Kaplan–Sheinwold (K–S) bidding system for the popular card game bridge. The original structure of Precision, another bidding system, also employed inverted minors over a 1 ♦ opening. However, the treatment is no longer restricted to users of these bidding systems.
Inverted minor suit raises are used (a single raise is strong, a double raise is weak and preemptive). Weak two bids, including 2 ♦. 2 ♣ is the only strong, forcing opening. Defensively, simple overcalls are taken to have the same range as an opening bid, and take-out doubles emphasize distribution.
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:
25 Bridge Conventions You Should Know is a book on contract bridge co-written by Canadian teacher and author Barbara Seagram and British player and author Marc Smith.It was published by Master Point Press in 1999.
Promises a four-card major and a longer minor. Advancer [2] can bid 2 ♣ to ask for the minor (pass or correct), 2 ♦ to ask for the major, or 2 ♥ or 2 ♠ to play. 2 ♣: Promises both majors. Advancer can bid 2 ♦ to ask which is better, so the overcaller's 2 ♣ bid can freely be made with 5-4 shape. 2 ♦: Promises one of the major ...
shows a single minor or both majors; advancer bids 2 ♣, after which the intervener corrects to his actual suit if a minor, or hearts if holding both majors 2 ♣ or 2 ♦: shows the bid suit and a major 2 ♥ or 2 ♠: shows the bid suit 2NT: shows the minors
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."
Opener responds 2NT with a minimum or at the three-level in his lowest four-card suit with a maximum. Responder may have one of two ranges: 11-12 points (looking for game in notrump) or 17-20 points (looking for slam in notrump or a minor suit). Similarly after a 2NT opening, 3 ♠ asks opener whether he is minimum or maximum, looking for a slam.