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1 ♠ – 2 ♣ 2 ♠ – 2NT. Forcing to game, with balanced hand and a good club suit. 1 ♠ – 2 ♣ 2 ♦ – 3 ♣ Forcing, unless the partnership has agreed that this is an exception to the "2/1 rule." 1 ♦ – 2 ♣ Forcing for one round only (as in Standard American), except in the variant of 2/1 where this sequence is game forcing as ...
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:
A bidding system in contract bridge is the set of agreements and understandings assigned to calls and sequences of calls used by a partnership, and includes a full description of the meaning of each treatment and convention. The purpose of bidding is for each partnership to ascertain which contract, whether made or defeated and whether bid by ...
In the card game contract bridge, a forcing bid is any call that obliges the partner to bid over an intermediate opposing pass. Owing to the partnership's bidding system or a bridge convention, partner must "keep the bidding open", [1] i.e. not pass, thereby preventing his left-hand opponent from ending the auction with a pass and enabling the "forcing bidder" to bid further.
It is a natural bid, used to show a hand that is too strong to open at the one level. Commonly used in the early days of bridge, most expert players converted after World War II to the now more common weak two bid [2] retaining only 2 ♣ as a strong opening suit-bid and changing its meaning to artificial and forcing holding any suit. This was ...
Bridge bidding systems that incorporate a strong 2 clubs opening bid include modern Standard American, standard Acol, 2/1 game forcing and many others. In most natural bridge bidding systems, the opening bid of 2 ♣ is used exclusively for hands too strong for an opening bid at the one-level.
Bridge base basic, also known as BBO basic, is a bidding system for the game of bridge based on the Standard American Yellow Card (SAYC). It is simplified, suitable for beginners, and widely used in internet bridge, particularly on Bridge Base Online . [ 1 ]
Consequently, bids of 1 ♦, 1 ♥ and 1♠ are limited to about 18HCP, and also 1 ♦ shows at least four diamonds (five in some versions of the system). The 2♣ opening is usually reserved to show a limited hand with long clubs and possibly a four-card major, similar to the Precision 2♣ opening.