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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:
If responder has 19 or 20 HCP, then a small slam is a possibility but more information is needed about opener's hand before it should be bid. This is where a quantitative bid should be made. A bid of 4NT "invites" opener to: bid 6NT with a maximum holding of 14 HCP (19 + 14 = 33 which is sufficient) pass with a minimum 12 HCP (20+ 12 = only 32)
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.
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 ...
Zar Points (ZP) is a statistically derived method for evaluating contract bridge hands developed by Zar Petkov. The statistical research Petkov conducted in the areas of hand evaluation and bidding is useful to bridge players, regardless of their bidding or hand evaluation system.
EHAA (Every Hand An Adventure) is a highly natural bidding system in contract bridge characterized by four-card majors, sound opening bids, undisciplined weak two-bids in all four suits and a mini notrump, usually of 10–12 high card points. [1]
Strong notrump after passing (SNAP) is a bridge bidding convention originated by Jeremy Flint and Tony Priday [1] [2] and is a one notrump (1NT) bid by a passed hand in response to a one-level opening by his partner. [citation needed]
In contract bridge, a relay bid is a conventional bid that usually has little or no descriptive meaning but asks partner to describe some feature of his hand. A relay is often the cheapest bid available but need not be.