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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.
See the Glossary of contract bridge terms for an explanation of unfamiliar words or phrases. Walsh is a convention used in the card game of bridge in response to an opening bid of 1 ♣. [1] The convention has its origins in the Walsh System [2] developed by Richard and Rhoda Walsh. [3]
New Minor Forcing (NMF), is a contract bridge bidding convention used to find a 5-3 or 4-4 major suit fit after a specific sequence of bids in which opener has rebid one notrump. The convention is triggered by responder at his second turn by an artificial bid of two in an unbid minor; it requires that he hold five cards in the major he has ...
Prefer majors to minors. Bid a major suit before a minor suit. They can overbid opponents at the same level and score higher. Prefer length to strength. A long suit, even if weaker, is often ultimately more powerful and desirable as a contract than a short suit, however good, because long trumps will usually make tricks in the end, and they ...
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