Double Entry Strip
7 4 3    
A  
A  
         
A 6 5     Q        
K   Q  
K   Q  
-         Q J      
K J 2    
 
 
3 2      
Contract is no trump.  South to lead.  Win 4 tricks.
Solution:  Start by playing the ♠K.  East can obviously not win this trick.  West will have to win the first, second or third spade you play.  If West wins the first spade he either has to return a low spade or a red king.  Either way you are able to win in the north hand a win four tricks; two spades and your two red aces.  If West ducks the first spade you must discard a low spade from dummy and continue with the ♠J.  Again West suffers a similar fate and the ♠7 becomes your entry to dummy.  If West waits until the third round of spades to win his ace then he is left with no choice but to play a red king and give you the final two tricks.