Gambit and Jettison
A        
8 7 3  
A  
         
8         6        
Q   9  
Q 9 8   K  
          K J      
         
A 6  
 
Q 4 3    
Contract is Spades.  South to lead.  Win 4 tricks.
Solution:  Start by leading the 6 of hearts, giving the defense a heart trick that they were not entitled to.  This may seem like a strange thing to do but in fact the defense is going to return the favour two-fold!  When West wins the first trick they are forced to return either a diamond or a spade.  Either way North wins the return with the ace and then plays the other ace.  The only important thing for declarer to do is discard the ace of hearts from the south hand on one of these two tricks.  North's remaining hearts are good and since the ace of hearts was discarded there is no blockage to be concerned about.