The Impossible Negative is a convention used by players responding to a Precision (or other strong club) 1 opening. A 1 response is normally an artificial "negative" bid that shows less than 8 points. However, responder may also bid 1 with any 4-4-4-1 hand pattern that contains 8+ points. This is the "impossible" negative bid.

After opener makes his rebid, the Impossible Negative bidder has two types of rebids to disclose his shape and values:

  1. He can make a jump rebid in his singleton suit, assuming opener has not bid the suit naturally. Examples:

    OpenerResponder
    AJT62SKQ84
    HJKT73
    DAQ745
    CA96Q532

    Opener
    1 (1)
    1
    Pass

    Responder
    1 (2)
    3D (3)

    1. Strong and artificial
    2. Negative
    3. Showing 4-4-1-4 shape and 8+ points. (Diamond singleton.)

    1! : 1!
    1NT : 3! Showing 4-4-4-1 shape and 8+ points. (Club singleton.)

  2. If opener has bid responder's singleton suit, responder can jump in notrumps. Examples:

    1! : 1!
    1H : 2NT! Showing 4-1-4-4 shape and 8+ points. (Heart singleton.)

    1! : 1!
    1S : 2NT! Showing 1-4-4-4 shape and 8+ points. (Spade singleton.)

See also

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