Monaco Convention

The Monaco convention was the original relay-based bidding method. It was devised by Mr. Pierre Ghestem , (Monsieur Pierre Ghestéme) of France around the year 1945. Mr. Pierre Ghestem was born February 14, 1922 and died April 11, 2000, of France. Together with his long-time regular partner, Mr. René Bacherich of Lille, France, they employed […]


Redwood conventional The concept of the Redwood conventional method asking for Keycards while making a slam attempt is also a result of an application designated as U.S.P., or Useful Space Principle, conceived by Mr. Jeff Rubens. The principle is defined as the partnership actually assigning meanings to actions, so that the remaining bidding space matches […]

Convention Card

How to Fill Out The New ACBL Convention Card Note: For historical purposes only. Posted early 2000 The ACBL Convention Card is designed to be easier for players to use by making available pertinent information to opponents (a comprehensive overview of your system). It should provide players with a good idea of the methods they […]

Six Ace RKCB

Six Ace Roman Keycard Blackwood The origin of this conventional method is unknown. This conventional method, otherwise known by its abbreviated designation 6A-RKCB or Six Ace Blackwood, (more technically Six Ace Roman Keycard Blackwood), is considered to be a natural extension of the concept known as Roman Key Card Blackwood, whereby the Key Card bidder […]


Asptro Convention The origin of this conventional method is unknown. This is a conventional method and borrows elements of both the Aspro convention and the Astro convention, and is considered to be a combination of both. The designation is also a combination of both methods: Asptro-Astro. This conventional method is a defense method employed after […]

Two Under Preempt

Two Under Transfer Preempt This method was devised by Mr. Marty Bergen together with Mr. Larry Cohen and the convention uses a Preemptive Opening as an artificial Preempt at the Two Level and also at the Three Level and higher to indicate a specific suit two ranks higher than the bid suit. This convention allows […]

Crash Convention

The Crash convention was devised by Mr. Kit Woolsey and Mr. Steve Robinson, and is devised as a means to enter the auction with weak two-suited holdings after an artificial 1 Club opening by the opponents. The concept is effective in that the overcall of the intervenor interferes with the line of communication between opener […]

Ingberman Convention

This convention was named for Mr. Monroe J. Ingberman, born 1935 and died 1985, of White Plains, New York, United States, who was a mathematician and bridge player. He was also known for fragment or splinter bids and the Three No Trump response as a forcing Major raise. Words by Professor George H. Sorter – […]

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