Serious 3NT

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Serious 3NT is a contract bridge bidding convention. It is used in game-forcing auctions where a major suit has been agreed upon.

1–2 if using 2/1 Game Forcing or 2–3 (Agreeing spades)

The next bid indicates suitability for slam:

  • 3NT: strong (Serious 3NT)
  • 4/4/4: cuebid, but not strong (non-serious).
  • 4: truly minimum.

Since Spades are the agreed trump suit, Three No Trump is not usually the best contract. Using Serious Three No Trump, a bid of Three No Trump says "I am Serious about slam", i.e. "I have a good hand". Bypassing bidding Three No Trump says "I am not Serious about Slam". Examples shown in the above auction.

If one player bypasses 3NT with a Cuebid (and is 'not serious'), then a Cuebid by partner indicates that he is serious. Note that in the example auction above, if the strong hand is next (after the 3 bid, he can differentiate between a strong hand, a weak hand that has a control (in case partner is strong) or a minimum hand.

Serious Three No Trump was devised by and named by Eric Rodwell.[1]

Frivolous 3NT[]

Some partnerships reverse the meaning of 3NT in this situation. A weak hand bids 3NT to indicate no additional strength. This has the effect that a weak hand will not pinpoint a control for the defense.

References[]

  1. ^ Various articles in the American Contract Bridge League Bulletin (magazine). Convention cards submitted to the World Bridge Federation.
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