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The Rosenkranz double and Rosenkranz redouble are elements of a bridge bidding convention invented by Dr. George Rosenkranz, collectively known as the Rosenkranz double. [1] It is a double made by the advancer (partner of the overcaller) in an auction where opener, overcaller and responder have all bid different suits. It is used to describe ...
In American Contract Bridge League (ACBL) tournaments, support doubles must be indicated on the convention card and must be Alerted. Additionally, when opener makes a call other than a support double (including Pass) when the support double is an option, an Alert should be made if the partnership agreement is that opener's failure to double or ...
Double: shows a single minor or both majors; advancer bids 2 ♣, after which the intervener corrects to his actual suit if a minor, or hearts if holding both majors 2 ♣ or 2 ♦: shows the bid suit and a major 2 ♥ or 2 ♠: shows the bid suit 2NT: shows the minors
Contract bridge is a trick-taking card game played by four players in two competing partnerships in which a sequence of bidding, 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 ...
The snapdragon double (also known as competitive double, fourth-suit double, or impossible double) [1] [2] is a bidding convention in contract bridge.It is a call of double by fourth hand, when three different suits have been bid by the first three players and shows a good holding in the fourth suit (generally six cards, though some partnerships allow five) and tolerance for partner's suit.
In contract bridge and particularly in duplicate bridge a convention card is a summary of the conventions and treatments that a particular pair is using. [1] The Laws of Duplicate Bridge specify that "Each partnership has a duty to make available its partnership understandings to opponents before commencing play against them."
A more serious violation of the game's Proprieties may be imposed by barring the offender from an event, a portion of an event, or from organized bridge. Penalty card A card, incorrectly exposed by the defense, whose subsequent proper play is governed by certain rules. See major penalty card and minor penalty card. Penalty double See double ...
Double: Promises a four-card major and a longer minor. Advancer [2] can bid 2 ♣ to ask for the minor (pass or correct), 2 ♦ to ask for the major, or 2 ♥ or 2 ♠ to play. 2 ♣: Promises both majors. Advancer can bid 2 ♦ to ask which is better, so the overcaller's 2 ♣ bid can freely be made with 5-4 shape. 2 ♦: Promises one of the ...