| Sandwich Notrump - When one opponent opens, partner passes, 
    and other opponent bids a second suit, an intervening Notrump call 
    "sandwiched" between the two opponents conventionally show a weak two-suited 
    hand in the remaining suits.  Thus, the Sandwich Notrump functions 
    similar to the Unusual Notrump. Since the opponents will usually have the 
    balance of power, the Sandwich Notrump caller seeks a great trump suit fit 
    in which to compete.  This overcaller often has few points, instead 
    hoping the fit and vulnerability will compensate in competitive bidding.  
    Ideally, the Sandwich Notrump intervention will either push the opponents' 
    into an uncomfortable contract or lead to a profitable sacrifice. Examples:
  (1D) -   P   - (1H) - 1N;
  P    -  (1C) -    P  - (1D);2N
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