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In the partnership card game contract bridge, the Blackwood convention is a bidding convention developed by Easley Blackwood in 1933 [1] and still widely used in the modern game. Its purpose is to enable the partnership to explore its possession of aces, kings and in some variants, the queen of trumps to judge whether a slam would be a feasible ...
Perhaps the most widely known and used conventions are Blackwood, which asks for and gives information about the number of aces and kings held, Stayman convention, used to discover a 4-4 fit in a major suit following an opening no trump bid, Jacoby transfers, used to find a 5-3 fit in a major suit, and strong two clubs to show a very strong ...
The Culbertson 4-5 notrump is a slam-seeking convention in the game of contract bridge.It was devised in the early 1930s by Ely Culbertson.Most four-notrump conventions (Blackwood and its variants being the best known) demand that bidder's partner define their hand using agreed codified responses.
Blackwood convention Popular bidding convention in contract bridge, used to determine number of partner's aces/kings to evaluate for slam bids. Blank (Adjective) Unprotected by other, usually lower cards in the same suit: "I held the blank king of spades." [citation needed]
Byzantine Blackwood is a bidding convention in the game of bridge. Devised by Jack Marx , it is a complex version of the Blackwood convention (by which a four notrump (4NT) call asks about partner 's honor card holdings). [ 1 ]
The Grand Slam Force is a bidding convention in contract bridge that was developed by Ely Culbertson in 1936. [1] It is intended to be used in cases where the combined hands of a partnership are so strong that a slam (winning at least 12 tricks) is a near-certainty and a grand slam (winning all 13 tricks) is a possibility.
Easley Rutland Blackwood (June 25, 1903 – March 27, 1992) was an American contract bridge player and writer, best known for the Blackwood convention used in bridge bidding. Biography [ edit ]
Bidding systems are characterized as belonging to one of two broadly defined categories: natural bidding systems and; artificial bidding systems. Nevertheless, each contains elements of the other given the number and variety of treatments and conventions that have been developed by bridge bidding theorists.