Support Double

Support Doubles and Support Redoubles The Support Double was devised by Mr. Eric Rodwell, and is a method that enables the opening bidder to clarify or show precisely the degree of support of the suit of the partner or responder. This generally occurs in a competitive auction, in which an opponent interferes at a low […]


Brozel Convention This is a conventional method with the purpose of defending against a 1 No Trump opening generally with a range of 15-17 high card points. The Brozel convention was developed by Mr. Bernard Zeller of New Jersey, United States, and can be applied either in the direct or balancing position. The conventional method […]

Lavinthal Signals

These suit preference signals were devised and developed by Mr. Hy Lavinthal, who was born in the year 1894 and died in the year 1972, and who is of Trenton, New Jersey, United States. Among other accomplishments he served as the Associate Editor of The Bridge World under the employment of Mr. Ely Culbertson. According […]


This is a conventional method used in bridge bidding and which was devised by Mr. Marty Bergen and published by Mr. Larry Cohen. The DONT conventional method was first published in the magazine Bridge Today in Marty Bergen’s column in the issue of September / October 1989, pages 23 to 29. This convention is sometimes […]

Negative Doubles

Many bridge players base their approach on the 5-Card American Standard System. Using this bidding system, and other systems based on opening 5-card Major suits, certain requirements are a prerequisite to making a bid or call. If the opponents would remain quiet and pass, there would be no problem in bidding to the correct contract. […]

Wolff Sign-off Bids

The original conventional method is designated as Wolff Signoff. (See below). This convention method was devised and developed by Mr. Robert S. Wolff of Dallas, Texas, United States. He has attained the title of a World Champion seven times and presently the only bridge player, who has won five different World Championships in five different […]


There were many pioneers in establishing these conventions, and they are used, employed, and applied by bridge players globally. They were invented, implemented, revised, and became useful tools in the management of 26 cards. They serve as instruments of communication between two people playing the same game. Some have practically remained the same from the […]

Michaels Cuebid

This conventional method was devised and developed by Mr. Michael Michaels, (aka Mike Michaels), of Miami Beach, Florida, United States. The concept incorporates the use of a cuebid in the suit of the opponent, who has opened the auction, to show a two-suited hand. The cuebid is employed most often in the immediate seat following […]

Kickback Jeff Rubens

Kickback Convention The origin of this concept is by Mr. Jeff Rubens of Scarsdale, New York, United States. The concept is also a result of an application called U.S.P., or Useful Space Principle, also conceived by Mr. Jeff Rubens, which is defined as when allocating bidding space under partnership agreements and understandings, then assign the […]

RKCB Void-Wood Martel Stansby

Roman Keycard Blackwood Void-Showing Variation by Mr. Chip Martel and Mr. Lew Stansby Mr. Easley Blackwood devised the Blackwood Convention as a means of bidding slam with the built-in feature of not bidding slam when it proved not to be feasible. His convention has undergone many modifications and many variations have resulted from this one […]

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