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Unusual Vs. Unusual
Unusual vs. unusual is a competitive bidding convention used in contract bridge by the opening side after an opponent has made an showing two suits (e.g. a Michaels cuebid or an Unusual notrump overcall). Description The Unusual vs unusual convention is used after opponents have made an overcall that specifies two suits, for example using: * The Unusual notrump convention which shows the two lowest unbid suits * A so-called comprehensive system (such as Ghestem or Questem) where any two-suited combination can be shown * A Michaels cuebid after a one-level opening in a minor showing both majors The convention does not apply where only one suit is specified, for example: * Michaels cuebid after a one-level opening in a major which promises the other major and an unspecified minor For completeness a defense to use when a single suit is bid is shown below. ;Both suits are specified * A three-level in partner's suit is constructive (7-10 HPC) and non-forcing * A bid in is compe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michaels Cuebid
The Michaels cuebid is a conventional bid used in the card game contract bridge. First devised by Michael Michaels of Miami Beach, FL, it is an 's cuebid in opponent's opening suit and is normally used to show a two-suited hand with at least five cards in each suit and eight or more points. After the opponents have opened at the one-level, the overcaller bids the same suit at the two-level; the two normal cases are: #Over an opponent's minor opening, a cuebid shows both majors. For example, 1 – 2 shows hearts and spades. #Over an opponent's major opening, a cuebid shows the other major and a minor suit. For example, 1 – 2 shows hearts and either clubs or diamonds. Partner can make a 2NT relay bid to request partner to bid his minor suit, or a 3 pass-or-correct bid. Partnerships who have incorporated Michaels cuebids amongst their agreements usually also play the unusual notrump convention. Requirements Point count requirements vary and are a matt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unusual Notrump
In the card game of bridge, the unusual notrump is a conventional showing a two-suited hand. It was originally devised by Al Roth in 1948 with Tobias Stone, to show the minor suits after the opponents opened in a major. The convention concept is now generally extended to show the "two lowest unbid" suits. Thus, over 1, 2NT shows diamonds and hearts; and over 1, it shows clubs and hearts. In addition to succinctly describing the hand to the partner, it deprives the opponents of bidding space, i.e. it has a preemptive effect. A drawback is that it provides the opponents with information about the strength and distribution of the overcaller's hand, potentially enabling improved declarer play should they secure the contract. History In his seminal 1953 book,. The book is characterized as "An influential book, that suffers somewhat from a lack of clarity. It provides a structure that was lacking in Goren, with better definitions for bidding actions...". The Roth-Stone System, Al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ghestem
In the game of bridge, Ghestem is a conventional overcall structure, using 2NT, 3, and the (non-jump) cuebid over an opposing opening at the one level to denote two-suited hands in two of the remaining three suits. This convention was devised by the French bridge and checkers player Pierre Ghestem. When playing Ghestem, after an opposing one-level opening, the three overcalls mentioned denote the three possible two-suited hands in the suits excluding the opened suit: :2NT : shows the two lowest-ranking unbid suits :3 : shows the two highest-ranking unbid suits :Cuebid : shows the top- and bottom-ranking unbid suits Requirements The requirement for a Ghestem overcall is a two-suited hand with at least five cards in each suit and opening values. Point counts vary, but it is commonly agreed that a Ghestem bid is constructive and should be made on hands that hold the prospect of winning the auction. If made on very weak hands, there is the danger that if the opponents win the au ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Splinter Bid
In the card game "contract bridge", a splinter bid is a convention whereby a double jump response in a side-suit indicates excellent support (at least four cards), a singleton or void in that side-suit (but preferably not the ace or king), and at least game-going strength. Some partnerships agree that the maximum strength can be only that necessary to reach a game contract; stronger holdings with major suit support instead might temporize with a Jacoby 2NT bid. The idea was developed independently in 1963 by David Cliff, the first to write about it, and Dorothy Hayden Truscott; it grew out of two earlier bidding tools, the Fragment bid and the Void-Showing bid. Examples For example, a four clubs (4) response to a one heart (1) opening establishes hearts as trump suit and indicates a singleton or void in clubs. Different bidding systems may specify different strengths for responder's hand, e.g. 10-12 high card points (HCP), 10-14 or 11-15, for a splinter. With a strong hand, a resp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Useful Space Principle
The Useful Space Principle, or ''USP'', in the game of contract bridge was first articulated in a series of six articles in '' The Bridge World'', published from November 1980 through April 1981. (The International Bridge Press Association awarded its 1981/1982 award for Best Article or Series on a System or Convention to Jeff Rubens for this series.) The USP is expressed succinctly i''The Bridge World'' glossaryas "a partnership's assigning meanings to actions so that the remaining bidding space matches the needs of the auction." The articles on the USP were the genesis of widely used conventional methods such as Kickback and transfer advances of overcalls. The USP tells bidding theorists that bidding space should be allocated where it is most needed. A USP example: Kickback The Blackwood convention, as originally formulated, violates the USP. Suppose that the agreed trump suit is spades. After the Blackwood "asker" bids 4NT, "teller" can convey four separate messages without b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Negative Double
The negative double is a form of takeout double in bridge. It is made by the responder after their right-hand opponent overcalls on the first round of bidding, and is used to show shortness in overcall's suit, support for the unbid suits with emphasis on majors, as well as some values. It is treated as forcing, but not unconditionally so. In practice, the negative double is sometimes used as a sort of catch-all, made when no other call properly describes responder's hand. Therefore, a partnership might even treat the negative double as a wide-ranging call that merely shows some values. Usage Using the modern negative double convention, it is understood that a double over an initial overcall is conventional, and ''not'' for penalties (but see Playing for penalties). For example, using this convention, the following doubles would be regarded as negative, not for penalty: *1 – (1) – Dbl *1m – (1M) – Dbl *1 – (1) – Dbl *1M – (2m) – Dbl In understandings regarding nega ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |