The origin of this conventional method is unknown. As with the sister conventional method of the Gambling Three No Trump opening, this conventional method is part of the British System. This feature is also used by bridge players using Precision. The Gambling Two No Trump bid is also a feature of the Acol System and has been adopted by bridge players using the Two Clubs Strong Artificial Opening bid.
Principle of the Concept
The Gambling 2 No Trump bid is an opening bid based on a long, solid 7-card Minor Suit, with only one outside stopper. The general consensus is that the Gambling 3 No Trump opening contain at least seven cards in the Minor suit, which are solid with all top four honors from Ace to the Jack. With the Gambling 2 No Trump opening the requirement for the 7-card Minor suit remains valid, but the top honors may only include the top three honors: Ace-King-Queen.
With either of these holdings the opener should open the auction with 2 No Trump.
Responder has the following options:
Defense Method
Defense mechanisms are solely based on the partnership agreement. They generally are identical to those employed with the Gambling 3 No Trump opening, only one level lower. This is a matter of partnership agreement.
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.