Mr. Marty Bergen, an experienced and expert bridge player and bridge author, devised this method to interfere with and enter the bidding auction after opponents opened a Weak No Trump, consisting of a range between 10 to 13 high card points, otherwise known as a mini-Notrump.

Mr. Marty Bergen maintained that a defense method was needed, which includes the employment of a penalty double.

Note: The conventional defense method known as D.O.N.T., devised and developed by Mr. Marty Bergen and Mr. Larry Cohen, does not have this feature. However, this version was later incorporated into the method designated as DONT, and this version was dropped as a preference to the concept of DONT, and which could also be employed against other No Trump ranges.


After a Weak No Trump Opening by the Opponents - Range: 10-13 high card points

Double: Once it has been established that the No Trump is weak, then a double is for penalty. Partner must pass. This double shows a minimum of 13 plus high card points and any distributional pattern.
2 : Shows any single-suited holding. The advancer may pass if the partner of the No Trump bidder responds.
  After a pass the advancer bids 2 as a relay. If the suit of the overcaller is Diamonds, then a pass by the overcaller is preferable if holding minimum values. When holding additional values, then the overcaller can make a forcing bid so that advancer has an opportunity to clarify his values.
  If Diamonds is not the suit of the overcaller, then the overcaller corrects to the intended suit. Since the overcall is after a weak No Trump, then game may be a possibility. The partnership agrees upon any and all continuances. A possible game contract in either Major suit or even No Trump is feasible.
2 : Shows Diamonds and a higher-ranking suit, either Hearts or Spades.
2 : Shows Hearts and a higher-ranking suit, ergo Spades.
2 : Shows Spades. By directly bidding Spades first, the implication is that the Spade suit is weaker than when the intervenor first bids 2 Clubs to show a single-suiter and then rebids Spades.


Note: No examples are given, since the method is self-explanatory. Remember that the distribution will become the primary feature of the holding to determine when and whether to competitively enter the auction. Practically all continuances are based on partnership agreement. The issue of vulnerability also plays an important part. The partnership must also determine any action following any response from the partner of the No Trump bidder.



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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