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In contract bridge, various bidding systems have been devised to enable partners to describe their hands so that they may reach the optimum contract.Key to this process is that players evaluate and re-evaluate the trick-taking potential of their hands as the auction proceeds and additional information about partner's hand and the opponent's hands becomes available.
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 ]
The optimum contract is the one that offers the best chance of gaining the most scoring points whilst minimising the risk of failure. It is that contract that cannot be improved upon by further bidding nor could it have been improved upon by taking a different line in earlier bidding.
Responder may also jump to 3 of any suit (except 3 ♣, which is signoff) to show a game-forcing hand with a good suit or, if the jump is in one of opener's suits, two of the top three honors. Although it is mandatory in the XY Notrump form of the convention to complete the relay 2 ♣ to 2 ♦ , when Z was a suit, opener may be unlimited.
"Standard American" was the label given to the bridge bidding system developed by Charles Goren and his contemporaries in the 1940s. This system employed the 1915 point-count method to evaluate the strength of a bridge hand. Most bids had fairly specific requirements regarding hand strength and suit distribution.
In contract bridge, the Law of total tricks (abbreviated here as LoTT) is a guideline used to help determine how high to bid in a competitive auction. It is not really a law (because counterexamples are easy to find) but a method of hand evaluation which describes a relationship that seems to exist somewhat regularly.
Opener responds 2NT with a minimum or at the three-level in his lowest four-card suit with a maximum. Responder may have one of two ranges: 11-12 points (looking for game in notrump) or 17-20 points (looking for slam in notrump or a minor suit). Similarly after a 2NT opening, 3 ♠ asks opener whether he is minimum or maximum, looking for a slam.
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 ...