Rule of Seven - Rule of 7

The Rule of Seven was created and implemented separately by two individuals. One is Mr. Robert Berthe of France, who is a published author of bridge book(s). Several of his books are included in the following list:


Bridge, Step by Step Card Play in No Trumps

Co-author Norbert Lebely, Translator Barry Seabrook, 1981

Following is a brief description of his book.
Step-by-Step Card Play in No Trumps
Robert Berthe and Norbert Lebely

This is a new edition in the Step-by-Step series of a book first published in 1981. It includes 50 deals in progressive order of difficulty presenting the full range of typical problems, challenges and opportunities that occur in No Trump contracts. How many sure tricks are there? What are the options? Where are the extra tricks coming from? How to establish them? Each commentary concludes with a guiding principle.


Bridge: Techniques and Tips from the Masters

4249 Diagrammed Hands and Plays

Co-authors Sally Brock, Tony Forrester, Brian Senior, Glorva Hale, Nancy Starr


Mr. Gerald Fox of Napa, California, bridge expert, teacher, and author, also independently devised the Rule of Seven.

These two bridge players were wondering if it would be preferable for the declarer to hold up an Ace. After establishing the question, they set about finding the answer. They arrived at the following conclusion.

If the declarer subtracts from 7 (seven) the total number of cards in the suit in his own hand and the dummy, the result is the number of times declarer should hold up with his Ace.

An example always helps. Declarer has A98 and the dummy has 42. Together declarer and dummy have 5 cards in this particular suit. Declarer subtracts the number 5 from the number 7, and 2 (two times) is the number of times declarer should hold up with his Ace.



If you wish to include this feature, or any other feature, of the game of bridge in your partnership agreement, then please make certain that the concept is understood by both partners. Be aware whether or not the feature is alertable or not and whether an announcement should or must be made. Check with the governing body and/or the bridge district and/or the bridge unit prior to the game to establish the guidelines applied. Please include the particular feature on your convention card in order that your opponents are also aware of this feature during the bidding process, since this information must be made known to them according to the Laws of Duplicate Contract Bridge. We do not always include the procedure regarding Alerts and/or Announcements, since these regulations are changed and revised during time by the governing body. It is our intention only to present the information as concisely and as accurately as possible.



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