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There are several Bridge conventions whose names include numbers, so-called “Rules” that are mathematically or number-based that assist the Bridge Player in the bidding or in the play of the hand. Using them can be productive and should be tried when appropriate. They include the following:
What is the correct hand? The Rule of 9 may help one decide whether to pass for penalty or bid. To use the rule, add the level of the contract, the number of the trump, and the number of trump honors held including the ten. If this sum is nine or more, pass the takeout double for penalty.
USEFUL NUMBERED RULES OF BRIDGE. Rule of 2, 3 and 4. For pre-empting with a long (7+ card) suit: estimate the number of tricks you will likely win, assuming the outstanding cards in your long suit are distributed normally and overbid by 2 (unfavorable: when Vul vs nonVul), 3 (equal: when the Vulnerability is both or none) or 4 (favorable: when ...
To use the rule, you add the level of the contract (usually 2/3), to the number of the trump in your hand, to the number of trump honors (AKQJ10). Formula: Level of Bid + # of trumps + # of trump honors= 9+.
Principle of fast arrival. With the popular acceptance of the 2/1 bidding system, the principle of “fast arrival” became more common, leap to game with a minimum! Fast Arrival jump bids limit your hand, but say very little about location of values.
Two Over One (2/1) Game Forcing is a natural, 5-card major bidding system. When the auction begins 1 / /, a simple 2-level response in a new suit is forcing to game. This page provides articles, convention writeups, and resources to help learn the system.
Open 1 of a Suit. Hand. Rule of Twenty. Quick Trix. Cal. ♠KT ♥JT8 ♦A863 ♣AT86. 4♦+4♣+12HCP = 20. ♠KT ♦A ♣A =21⁄2.
