| Roman Blackwood 
    - An adaptation of the Blackwood  convention using the responses after a 
    4 Notrump slam try: 
      
        | Response | Meaning |  
        | 5C | 0-3 Aces |  
        | 5D | 1 or 4 Aces |  
        | 5H | 2 Aces without extra 
        values |  
        | 5S | 2 Aces with extra values |  Note: The Blue Team Club 
    system exchange the 5C and 5D meanings.  Further, the 
    original Roman Blackwood used 5H and 5S to show "matching" (same 
    rank, color, shape) or "unmatched" Aces. Also 
    see books on
     
        Slam and other slam conventions:
     
        1430,
        Baby Blackwood, 
        
        Blackwood, Controls,
    Exclusion Blackwood/Voidwood,
    Gerber,  
        Grand Slam Force,
    Jacoby 2 Notrump,
    Key Card Blackwood, 
    Kickback,  
        Last Train,  NAMYATS,
    Pick a Slam,
    Quantitative Notrump Bid,
    Rolling Blackwood,
    Serious 3 Notrump,
    Slam Try - Stayman,
    Splinters,
    Opener 
    Jump Shift,
    Strong Jump Shift, and legacy treatments as 
        Roman Asking Bids,
    Roman Blackwood, 
        Roman Gerber.  Slam 
        treatments 
    also include interference of 
    an overcall by opponents, as 
        Negative Slam Double,
    DOPI,
        DEPO, ROPI. |