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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.
2 ♣ shows diamonds or a major-minor two suiter. Responder transfers to 2 ♦ which is either passed or advanced (diamond suit) or a major is bid (2 suiter, unspecified minor) 2 ♦ is a transfer to hearts; 2 ♥ shows both majors (responder may pass or correct to 2 ♠) 2 ♠ shows spades (natural bid) 2NT is a transfer to clubs
The Carrot 1NT is a contract bridge convention, in which a 1NT opening bid shows a balanced hand 13–17 HCP.With 13–14 HCP, the opener may not have a 4-card major. With 15–17 HCP, all balanced hands (including those with a 5-card major) may be opened 1NT.
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."
The Romex system is a contract bridge bidding system designed by Mexican bridge expert George Rosenkranz. [1] Key features of Romex are the multiple meanings attributed to certain bids, such as the dynamic one notrump and the Mexican two diamonds.