| 
    Thrump Double - Derived from the words "THRee  
    notRUMP", a specialized use of 3N useful after partner opens and 
    Right Hand Opponent makes a preemptive 3 level bid (3D through 3S). 
    When responder does not have a biddable 5 card major or a stopper yet holds 
    at least 10 points, the Thrump Double allows game exploration.  Note: 
    if opener began with a major suit, responder's Thrump Double denies 3 card 
    support. After 
    responder makes a "Thrump Double"; here is an example illustrating 
    opener's 
    possible rebids: 1C - (3D) - X - (P);    
    Thrump Double?
 
      
        | Response | Meaning |  
        | 3N | Opener promises a stopper |  
        | 3H | Opener holds a 4 card Heart 
        suit (perhaps Spades - up the line) but not a stopper |  
        | 3S | Opener holds a 4 card Spade 
        suit (not 4 Hearts) |  Note: 
    responder may have a long minor suit, choosing to rebid the suit as a 
    signoff bid when opener does not have a stopper. |