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The Strong Club System is a set of bidding conventions and agreements used in the game of contract bridge and is based upon an opening bid of 1 ♣ as being an artificial forcing bid promising a strong hand. [1] The strong 1 ♣ opening is assigned a minimum strength promising 16 or more high card points. All other bids would therefore be ...
Other popular Precision variations on opening bids are using a strong 1NT (14–16 is most common), using 2 ♣ to show only a 6+ club suit and expanding the possible hand patterns for the 2 ♦ bid to include the usual 4–4–1–4 and 4–4–0–5 as well as 4–3–1–5 and 3–4–1–5,1 ♦ bid promises at least 2 diamonds.
Ogust is a bridge convention used by responder after his partner has made a weak-two opening bid; its purpose is to gauge the strength of the weak-two bidder's hand. Named after Harold A. Ogust from the United States, the convention is also known as the 'Blue Club response' from the bidding system developed by Benito Garozzo.
The Baron Three Clubs is an alternative to the responder using Stayman over a 2NT opening bid. The responder will have five points or more and an unbalanced hand. The responder bids 3 ♣, which asks opener to bid his four-card suits in ascending order. If clubs are the only four-card suit, the opener bids 3NT.
The Culbertson 4-5 notrump is a slam-seeking convention in the game of contract bridge. It was devised in the early 1930s by Ely Culbertson. Most four-notrump conventions (Blackwood and its variants being the best known) demand that bidder's partner define their hand using agreed codified responses. In contrast, the Culbertson 4-5 describes the ...
5-4-4-3 System; Acol; Baron, an English system developed in the 1940s by Leo Baron, Adam Meredith and others. CAB, acronym for Two Clubs, Ace-asking and Blackwood; Canapé; Colonial Acol; Culbertson; EFOS, the Economical Forcing System developed by Eric Jannersten and others in Sweden in the sixties and seventies; EHAA, acronym for Every Hand ...
Australian Bridge magazine, December 2000, pages 20-21. List of defenses against a 1NT opening (text corrupted, but does provide a listing). Official website; Bridge Buff website: commentary on the MONK convention.
Here, the 2 ♠ bid denotes a four card spade support and a hand too strong for a fast-arrival bid of 4 ♠. This assumes the partnership are playing all FSF bids, at 2 or 3 level, as forcing to game. If playing that a 2 level FSF bid is forcing for one round only, responder will need to jump to 3 ♠ on the third round to create the game force.