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    Odd-Even Discard (Roman Discards) - A discard system which uses the parity (odd/even) 
    and rank of the card signal suit preference.  Assume opponents are 
    running a long suit; when partner cannot follow to the suit, the first 
    discard in an unwanted signifies suit preference.  An odd card shows 
    preference to the suit discarded; an high even card asks partner to lead the 
    higher non-played suit, while a low even card requests the lower non-played 
    suit.  
    Example: Opponents are running a long Heart suit; on the first discard, the 
    player may pitch to show suit preference: 
      
        | Discard | Suit Preference |  
        | D3 - suit | Diamonds |  
        | S5 - suit | Spades |  
        | C7 - suit | Clubs |  
        | D4 - low | Clubs |  
        | S8 - high | Diamonds |  
        | C2 - low | Diamonds |  
        | Any 6 | Not defined (cannot say or 
        no preference) |  
        | Honor | Not defined (cannot say or 
        no preference) |  Also see and
    Details on signaling and books on
      
    Signals |