Neither side vulnerable.  
East deals.
                              NORTH
                              S: 9 8 7 5 4        
                              H: J           
                              D: Q 7 5 3     
                              C: K 7 2   

                              SOUTH                         
                              S: K Q J 6 2
                              H: A 4 3 2    
                              D: A 4       
                              C: J 9    
	The Bidding:
                   EAST   SOUTH     WEST   NORTH                  
                   Pass    1S      Double   3S  
                   Pass    4S       Pass    Pass
                   Pass
	Opening Lead: 8D
     North's three spade bid after the takeout double by West
shows a good spade raise with less than ten points.  It is meant
to be more of a disruptive bid than a constructive one.  South
felt that his hand was very good and continued on to game.  The
competition was "rubber bridge" and the game bonus is sufficient
justification for South's aggressive bidding.
     West led the eight of diamonds.  The three was played from
dummy, East inserted the jack, and South won the ace.  Declarer
led the king of spades to the second trick.  West won the ace
while East played the three.  Without any apparent hesitation or
pause for thought, West placed the three of clubs on the table. 
Put yourself in declarer's position and determine what card you
would play from dummy.
     You have already lost a spade and you will probably lose a
diamond.  You must restrict your club losses to only one trick. 
If you had to play the suit yourself it is likely that you would
simply lead toward the king and play West for the ace.  This is a
50-50 play.  You now have others options, or so it would seem. 
If West has under led the queen, it is correct to duck.  If East
has both the ace and the queen, it does not matter what you do,
you will be defeated.  If West has under led the ace, then you
must play the king.  Here is the whole hand:  
                              NORTH
                              S: 9 8 7 5 4        
                              H: J           
                              D: Q 7 5 3     
                              C: K 7 2   
            WEST                             EAST
            S: A 10                          S: 3            
            H: K 9 8 6                       H: Q 10 7 5     
            D: 10 8 2                        D: K J 9 6           
            C: A 10 4 3                      C: Q 8 6 5     
                              SOUTH                         
                              S: K Q J 6 2
                              H: A 4 3 2    
                              D: A 4       
                              C: J 9
     I would guess that most players would call for a low club
from dummy at this point, based on the assumtion that West has
under led the queen of clubs.  In fact, we are taught that it is
wrong to under lead an ace against a suit contract.  Keep in
mind, however, that rules are meant to be broken.  Determining
the right time to break the rule is the big question.  Here, if
the defense is entitled to a diamond trick it will not go away,
and if declarer has the queen of clubs he will lose only one club
trick anyway.  But if partner has the queen, there is a chance to
beat the contract.  Putting declarer to the test early is the
right play for this hand.  
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