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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 ...
However, unlike the "fellow" Roman Club, there are many exceptions to this rule in Blue Club. 1NT ranging from 13 to 17 high card points . It can be either 13-15 points, which is essentially a replacement bid for a balanced club suit with two specific shapes, 3-3-3-4 and 3-3-2-5, or 16-17 pts and balanced.
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.
The vocabulary of bidding is limited to 38 different calls - 35 level/denomination bids [1] plus pass, double and redouble. Any bid becomes a contract if followed by three successive passes, therefore every bridge bid is a potential contract. By the rules of the game, the agreed meanings of all calls must be public and known to the opponents ...
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.
[1] Although the objective behind the formula is of questionable soundness, the formula itself follows from well-defined mathematical assumptions, and is almost universally applied in computer-scored bridge tournaments. A board might have been played fewer times than others because: the movement was not completed, or; there was a phantom pair, or
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In the Swiss convention, in response to an opening 1 ♥ or 1 ♠, a bid of 4 ♣ or 4 ♦ shows four-card support for partner's suit, about 13–15 points, and two or three aces respectively. Alternatively, the bids of 4 ♣ and 4 ♦ can be used to show trump quality; the specific meaning of the two bids varies between partnerships.