Rule 9

Rule of Nine – Rule of 9 The Rule of Nine is a concept employed by the responder after a certain bidding situation, which is described below. An example should clarify the situational element. The question for North, the opener, is whether to reopen the bidding with a double. The situation is that North has […]


More Rules, Guidelines Rules and Mathematical Rules There are certain mathematical calculations which enter into the bidding, the play and the defense procedure. These calculations are important in their application and should be used under the correct circumstances. They help in assisting and deciding which card to play, which defense and which offense strategy to […]

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