After opener makes his rebid, the Impossible Negative bidder has two types of rebids to disclose his shape and values, as follows.
Responder can make a jump rebid in his singleton suit, assuming opener has not bid the suit naturally. For example:
Opener | Responder | ||||
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Opener 1 ![]() 1 ![]() Pass |
Responder 1 ![]() 3 ![]() |
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1NT | : | ![]() | Showing 4-4-4-1 shape and 8+ points. (Club singleton.) |
If opener has bid responder's singleton suit, responder can jump in notrumps. For example:
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1![]() | : | 2NT! | Showing 4-1-4-4 shape and 8+ points. (Heart singleton.) |
![]() | : | 1![]() | |
![]() | : | 2NT! | Showing 1-4-4-4 shape and 8+ points. (Spade singleton.) |
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