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Convention: Bergen Responses to Gambling 3NT

 From the book by Marty Bergen (1985), Better Bidding with Bergen — Volume One, Uncontested Auctions.

4 says let’s play in a Part Score 4 or 4

4 is asking opener to bid a singleton: responses are

4= singleton, 4= singleton, 4NT=minor suit singleton, and 5 no singleton.

Depending on the location of the singleton and your hand, responder is usually interested in playing in a game, 5 or 5 or a slam, 6 or 6.

Example: Responder has:   A K Q x x x  A K Q x x x x

With a heart singleton, you want to play in 6 otherwise you would bid 5.

4 and 4S are signoffs in responders long suit. Opener must pass.

4NT is invitational to slam, asking opener to bid a minor suit slam with an extra trick.

Example: Responder has like Q x x x x x A K Q J x x x

5 asks opener to play in a game, either 5 or 5.

5 is a signoff by responder, responder knows that the opener has long diamonds and wants to play game from his

6 is to play slam in 6 or 6, opener is to pick the suit.

Again, a bid of 6 by responder is to play slam in diamonds, responder knows that it is the long suit.


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