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Convention (bridge)
A bridge convention is an agreement about an artificial or a set of related artificial calls. Calls made during the auction phase of a contract bridge game convey information about the player's card holdings. Calls may be "natural" (that is, are based on a holding of the suit bid, or a balanced distribution in the case of a notrump bid) or "" (show a feature unrelated to the named denomination). Purpose Contract bridge is a trick-taking card game played by four players in two competing partnerships in which a sequence of , also known as the auction, precedes the play of the cards. The purpose of this bidding is for players to inform their partners of the content of their hand and to arrive at a suitable contract at which to play the hand (or to prevent the opponents from arriving at a suitable contract). Although bidding is often "natural" (describing a hand by simple reference to possession, shape, and strength of the named suit), players may also bid using conventions, which as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Contract Bridge Glossary
These terms are used in contract bridge, using duplicate or rubber scoring. Some of them are also used in whist, bid whist, the obsolete game auction bridge, and other trick-taking games. This glossary supplements the Glossary of card game terms. : ''In the following entries,'' boldface links ''are external to the glossary and'' plain links ''reference other glossary entries.'' 0–9 ;: A mnemonic for the original (Roman) response structure to the Roman Key Card Blackwood convention. It represents "3 or 0" and "1 or 4", meaning that the lowest step response (5) to the 4NT key card asking bid shows responder has three or zero keycards and the next step (5) shows one or four. ;: A mnemonic for a variant response structure to the Roman Key Card Blackwood convention. It represents "1 or 4" and "3 or 0", meaning that the lowest step response (5) to the 4NT key card asking bid shows responder has one or four keycards and the next step (5) shows three or zero. ;1RF: One round forc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flannery
Flannery is a bridge convention using a 2 opening bid to show a hand of minimal opening bid strength (11-15 high card points) with exactly four spades and five (or sometimes six) hearts. It was invented by American player William (Bill) L. Flannery. This convention was introduced because of the awkwardness of describing such a holding, especially with four-card major systems. For example, with the hand , if the bidding starts 1 - 1NT (denying four spades), the opener cannot rebid 2, as it would be a reverse bid showing a stronger hand, 2 would show a six-card suit, and two of a minor would show four or at least three good cards. Thus, the opener cannot easily explore for a 5-3 fit in hearts. Five-card major openers are somewhat better placed, because 1NT denies both three hearts and four spades, so opener may pass more safely but is nevertheless at risk of missing a potential optimum 4-3 fit in spades. Flannery is also useful when playing five-card majors in conjunctions with f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gerber Convention
Gerber is a contract bridge convention devised by William Konigsberger and Win Nye from Switzerland who published it in 1936; John Gerber of Texas introduced it to North America in 1938 where it was named after him. It is similar to Blackwood but uses 4 instead of 4NT as a relay (asking) bid to inquire about the number of aces held by partner. A further relay bid may follow to inquire about the number of kings held. Gerber is used primarily after notrump openings, responses, and rebids, making it a complement to Blackwood rather than a replacement. Some club players also use it after suit bidding, but most experts do not recommend this. Purpose Because bidding and making a slam or grand slam contract in bridge gains significant bonus scoring points, partnerships will strive to bid them whenever their combined card assets are deemed sufficient. Knowing the number of aces and kings jointly held is usually crucial to this decision and Gerber is one of several bridge conventions us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cue Bid
In contract bridge, a cue bid (also, cuebid or cue-bid) is either a bid of the opponents' suit, or "slam seeking": a slam-investigating bid made during an auction's later rounds that shows control of a suit. Traditionally a cue bid is "slam seeking", but in the early 21st century the usage appears to be giving way to ''control bid''. Bid of the opponents' suit After the opponents have bid a suit, a cue bid of that suit is normally intended as a forcing bid. It shows interest in contesting the contract and asks partner to describe their hand. Immediate cue bid An immediate cue bid is made directly over opponent's opening bid. Traditionally, it denotes a hand unsuited for a takeout double. For example, after RHO opens 1, a hand such as would prefer not to double for takeout, because partner might make a penalty pass. A cue bid of 2, as traditionally used, would be appropriate: it tends to show great high card strength, probably with a hand pattern unsuited to defense. Partner is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asking Bid
In contract bridge, an asking bid is a convention used to seek a slam accurately. There are two types - colour asking bids and notrump asking bids. Constructed by bridge pioneer Ely Culbertson in the 1940s, they have been superseded by other methods; however, one remaining commonly used asking bid is the 5NT Grand slam force. The application of Asking bids requires making distinctions between the ''asking colour'', ''the agreed trump'' and the two remaining ''side colours''. Replies by partner are in accordance with a schedule of defined meanings. What is an Asking bid? First there has to be an agreed trump colour. The trump agreement can be done explicit as well as implicit. Thereafter ''the first'' asking bid has to be either a double jump in a new colour not bid by the partner or the one who puts the asking bid forward, or (without a jump) at the fourth level. After an asking bid, the one who has put the first asking bid forward, will be like the Captain of a ship, and his ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slam-seeking Conventions
Slam-seeking conventions are codified artificial bids used in the card game contract bridge. Bidding and making a small slam (12 tricks) or grand slam (13 tricks) yields high bonuses ranging from 500 to 1500 points. However, the risk is also high as failure to fulfill the slam contract also means failure to score the bonus points for a game (300-500). Conventions have been devised to maximise the opportunity for success whilst minimising the risk of failure. Contract bridge bidding systems are mainly "natural" (most bids have an obvious meaning) or "artificial" (many bids have a meaning unrelated to the denomination mentioned). However, even natural systems such as Acol find occasional need to resort to artificial means called conventions. A very common type of conventional bid is of the slam-seeking variety to be used in situations when a small slam or a grand slam appears possible but more information is needed before the optimum contract can be determined. In order to make a sm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jacoby 2NT
Jacoby 2NT (Swedish: ''Stenberg 2NT'') is a bridge convention in which a bid of 2NT over partner's opening bid of one heart (1) or one spade (1) shows a hand with both * opening strength or better - normally at least 12 HCP or a hand meeting the " Rule of 20" criteria, and * at least four-card support for opener's major suit. The 2NT response is forcing to at least game in opener's major suit. If the partnership also plays splinter bids, the Jacoby 2NT response tends to deny the shape for a splinter (i.e., no singleton or void). However, it might be the best alternative as prelude to possible slam exploration with unbalanced support in a holding stronger than the agreed range for a splinter bid. Origins In most bridge literature, the convention is said to have been developed by Oswald Jacoby. However, credit for its development has also been attributed to Leo Baron. Opener's Rebids Over a Jacoby 2NT Response With a balanced hand, opener rebids as follows: ACBLbr>"Bidding Tool ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Losing-Trick Count
In the card game contract bridge, the Losing-Trick Count (LTC) is a method of hand evaluation that is generally only considered suitable to be used in situations where a trump suit has been established and when shape and fit are more significant than high card points (HCP) in determining the optimum level of the contract. The method is generally not considered suitable for no trump or misfit hands; also, the trump suit is generally considered to require at least eight cards in length with no partner holding fewer than three. However, the LTC method of hand evaluation has been used successfully to evaluate unbalanced and balanced opening hands, and overcalls, since 1938 (combined with ‘quick trick’ evaluation and defined biddable suits), and by itself since 2017, before a fit and trump suit have been established based on the premise that a fit could usually be found later. Based on a set of empirical rules, the number of "losing tricks" held in each of the partnership's hand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bergen Raises
In contract bridge, Bergen raises are conventional treatments of responses to a major suit opening in a five-card major system. Developed by Marty Bergen and first published in April 1982, Bergen raises are based on the Law of total tricks, a hand evaluation concept which states that with a combined nine trumps in the partnership one should compete to at least the three-level regardless of combined high card strength. Bergen recommended that instead of the more rare occurrence in the use of the 3 and 3 response as a to show a strong hand, these bids should be redeployed to provide more precise information about the length and strength of support held by responder for partner's five-card major suit opening when responder has four-card support. Bergen raises are used in response to a 1 or 1 opening bid to show hands of specific length in trump support and strength as follows: *1NT followed by 3/3 on next round – invitational to game (typically 11-12 high card points) with three- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Minor Forcing
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 previously bid and an unlimited hand ranging in value from at least game invitational strength (11 or more points) to that sufficient to have interest in slam; he may also hold four cards in the other major. Accordingly, there are six bidding sequences in which the New Minor Forcing bid may be applied: Auction notes:1. The opponents are silent throughout.2. The ! indicates that the bid is . The New Minor Forcing bid by responder is forcing for one round and asks partner for further information on his shape and strength with the primary objectives of determining if opener has three-card support for responder's five-card major and/or if the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forcing Notrump
The forcing notrump is a bidding convention in the card game of bridge. In Standard American bidding, the response of 1NT to an opening bid of 1 or 1 shows 6 to 9 high card points (HCP) and is ''non-forcing''. Opener, with a balanced minimum, may pass the 1NT response and, if the opponents also pass, that will become the contract. A partnership may agree that this bid is ''forcing'' for one round; if the intervening opponent passes, opener must bid at least once more. This guarantees the responder at least one more opportunity to bid or pass. This mechanism allows the partnership to use the 1NT response for a greater variety of hands: in particular, ''invitational'' as well as ''minimum'' responder holdings. The forcing notrump is used over major suits only; 1NT is always standard and non-forcing over the minor suit In contract bridge the minor suits are diamonds () and clubs (). They are given that name because contracts made in those suits score less (20 per contracted trick) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Checkback Stayman
Stayman is a bidding convention in the card game contract bridge. It is used by a partnership to find a 4-4 or 5-3 trump fit in a suit after making a one (1NT) opening bid and it has been adapted for use after a 2NT opening, a 1NT overcall, and many other natural notrump bids. The convention is named for Sam Stayman, who wrote the first published description in 1945,"A New Notrump Convention", Samuel Stayman, ''The Bridge World'', June 1945. but its inventors were two other players: the Great Britain, British expert Jack Marx (bridge), Jack Marx in 1939, who published it only in 1946, and Stayman's regular partner George Rapée in 1944. *3 = --> *3 = ? *3NT = to play After a transfer, accept it with any 4333, bid 3NT with only two trumps, otherwise bid 4M. 1NT - 2; 2/2NT - 3 = Stayman *3 = 4M333 *3 = 4, not 4333 *3 = 4, not 4333, not 4 *3NT = no 4M 1NT - 2; 2/2NT - 3, 3 *3 = 4, not 4 *3 = 4, not 4 *3NT = to play *4 = bid your 4 card Major An alternative, simpl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
