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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.
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.
Under the rules of the sponsoring organization (for example national federations such as American Contract Bridge League (ACBL) and the English Bridge Union (EBU), zonal organizations, and the World Bridge Federation (WBF)), certain conventions are alertable, the partner of the player making the conventional call must say "alert" (or show an ...
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.
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.
The New Minor Forcing bid by responder is forcing for one round and asks partner for further information on his shape and strength with the primary objectives of determining if opener has three-card support for responder's five-card major and/or if there is a 4-4 fit in hearts; other major suit fits are also investigated.
2 ♠ = 7-9 HCP; Alertable and Slam Inviting. Subsequent bids are natural, seeking a trump fit, typically with "systems on" (Stayman and transfers in effect) if opener rebids 2NT showing a balanced hand. Opener must have extra values (at least 25 HCP) or a good trump fit to go to slam. 2NT = 10 or more HCP; Alertable and Slam Forcing.
Inverted minor raises, in which a jump raise of a minor suit opening is a weak preemptive bid, while a single raise is strong and forcing for one round; Jacoby 2NT, showing strong support with 4 or more cards; Splinter bids; New minor forcing; Fourth suit forcing and artificial.