Both sides vulnerable.  
West deals.
                              North
                              S: 7 5                
                              H: 6 2         
                              D: Q J 10 7 6 5 2     
                              C: 5 3 
            West                             East
            S: Q 6 3                         S: K J 4 2      
            H: Q J 9                         H: 9 7 5 3      
            D: 4                             D: K 8                 
            C: K 10 9 7 6 2                  C: Q J 8    
                              South                         
                              S: A 10 9 8   
                              H: A K 10 4      
                              D: A 9 3
                              C: A 4        
          The Bidding:  
                   West   North     East   South                      
                   Pass    Pass      1C     Dbl
                    3NT    Pass     Pass    Dbl
                 (All Pass)
	Opening Lead: DQ
    This took place at a duplicate game and all of the players were 
reasonable players.  The auction was exactly as shown and I have no
explanation for it. I held the South cards and it sounded as if my
side would not be able to score a game so I was very willing to
settle for plus two hundred.  It would not matter what partner led.
I would be able to take the first five tricks.  There was always 
the chance that partner would want to pull the double, but we had
played together many times and partner knew that I would not be
making this double without the setting tricks in my hand.
     The opening lead was delightful.  Declarer called for the king
and I won the ace.  I returned the nine of diamonds and declarer 
discarded the two of clubs.  I wasn't sure what was going on but
it did not matter.  After partner cashed all of the diamonds, 
making declarer pitch many cards, a heart back to my hand was 
the entry for me to take all of the rest of the tricks. 
    Declarer could have saved two tricks by pitching better but
it hardly mattered.  Down seven would have been -2000 instead of
the -2600 that he got for down nine.
    It appears that five diamonds is the best that North-South 
can do all by themselves.  Three no-trump goes down on the 
obvious club lead as there is no entry to dummy to take the 
diamond finesse.