| 
Non Vulnerable - A Non-Vulnerable condition may occur on one, both, or 
neither side of the table, depending on the circumstance.  In Rubber 
Bridge, the state where the side has not won a game.  In Duplicate Bridge, 
the condition where the side is enjoys a higher game or slam score but incurs 
additional penalties.  Sometimes referred to as the color "white".  
Thus, "White versus white" means neither side is Vulnerable. Vulnerability By Board - 
      
        | North | 1 None
 | 5 N-S
 | 9 E-W
 | 13 All
 | 17 None
 | 21 N-S
 | 25 E-W
 | 29 All
 | 33 None
 |  
        | East | 2 N-S
 | 6 E-W
 | 10 All
 | 14 None
 | 18 N-S
 | 22 E-W
 | 26 All
 | 30 None
 | 34 N-S
 |  
        | South | 3 E-W
 | 7 All
 | 11 None
 | 15 N-S
 | 19 E-W
 | 23 All
 | 27 None
 | 31 N-S
 | 35 E-W
 |  
        | West | 4 All
 | 8 None
 | 12 N-S
 | 16 E-W
 | 20 All
 | 24 None
 | 28 N-S
 | 32 E-W
 | 36 All
 |  Vulnerable Conditions - 
      
        | Our Side | Their Side | General Slang | U.S. Term | U.K. Term |  
        | Non-Vulnerable | Non-Vulnerable | Neither | White 
        vs White | White |  
        | Vulnerable | Non-Vulnerable | Unfavorable | Red vs White | Red |  
        | Non-Vulnerable | Vulnerable | Favorable | White 
        vs Red | Green |  
        | Vulnerable | Vulnerable | Horse and Horse | Red vs Red | Amber |    |