In competition, doubles are penalties, and redouble is for rescue.
This opening bid shows at least five spades, fewer than four hearts, fewer than six of either minor suit and normally less than the values for a one-level spade opening.
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2NT |
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Values-based inquiry |
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3C |
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Any 4-5C |
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3D/3H |
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Natural and forcing |
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3S |
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Invitational |
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3NT |
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To play |
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4C |
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Sets clubs as trumps and demands control bidding |
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4D/4H |
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Splinters agreeing clubs |
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4S/5C |
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To play |
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3D |
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Any 4-5D |
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3H/4C |
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Natural and forcing |
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3S |
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Invitational |
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3NT/ |
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To play |
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4D |
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Sets diamonds as trumps and demands control bidding |
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4H |
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Splinter agreeing diamonds |
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4S/5D |
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To play |
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3H |
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No minor, good hand, game-forcing, sets spades unless responder rebids 3NT |
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3S |
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Shape inquiry |
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3NT |
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0-2C |
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4C |
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0-2D |
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4D |
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0-2H |
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3NT |
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To play |
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4C/4D/4H |
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Control bids |
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4S |
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To play |
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3S |
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No minor, bad hand, does not set spades |
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3NT |
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To play |
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4C/4D/4H |
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Natural and forcing |
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4S |
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To play |
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3C/3D/3H |
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Natural and non-forcing, expecting a raise with 3-card or longer fit |
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3S |
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Not invitational |
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3NT |
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To play |
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4C/4D |
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Splinters |
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4H/4S/5C/5D |
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To play |
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4NT |
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RKC for spades |