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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.
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:
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
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.
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
Before looking at the detail, it is necessary to understand that bridge theory and practice suggest that the HCP method of hand evaluation, together with common sense concerning balance and cover in all suits, is the best for deciding the level of NT contracts, thus: 25+ HCP is sufficient for a game 3NT; 33+ HCP should yield 12 tricks
In the card game of bridge, the unusual notrump [1] is a conventional overcall showing a two-suited hand. It was originally devised by Al Roth in 1948 with Tobias Stone, [2] to show the minor suits after the opponents opened in a major. The convention concept is now generally extended to show the "two lowest unbid" suits.