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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 ...
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.
If responder has 13 HCP, then a small slam looks certain (13 + 20 opener's minimum = 33) and should be bid; If responder has 11 or 12 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:
A slam bonus for a small slam or grand slam contract bid and made; A bonus, colloquially known as 'for insult', is received at the end of any deal in which a doubled or redoubled contract is bid and made; If the contract is defeated, the defenders receive: Penalty points, assigned for every undertrick; In rubber bridge only:
Having determined the degree of interest in exploring slam possibilities, the methods and conventions to determine which controls (aces, kings and even queens) are held by the partnership include: the Blackwood convention, the Norman four notrump convention, the Roman Key Card Blackwood convention and cuebids. In his book "The Modern Losing ...
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Gerber is a contract bridge convention devised by William Konigsberger and Win Nye from Switzerland [1] who published it in 1936; John Gerber of Texas introduced it to North America in 1938 where it was named after him. [2] [3] It is similar to Blackwood but uses 4 ♣ instead of 4NT as a relay (asking) bid to inquire about the number of aces ...
Once adjustments have been made, an opening hand requires 26 ZP and a responding hand needs 16 ZP; a major suit game requires 52 ZP, a small slam requires 62 ZP and a grand slam requires 67. Bidding levels are five points apart yielding: Two level – 42 i.e. 26 + 16 Three level – 47 Four level – 52 Five level – 57 Six level – 62