Jettison Two-Entry Strip
-        
A 7  
-  
Q J 5    
8         -        
K 3   6 5  
-   A K 9  
K 9       -        
J        
J 9  
Q J  
-        
Contract is spades.  South to lead.  Win 4 tricks.
Solution:  Start by playing the jack of spades, discarding the five of clubs from the north hand.  Declarer then plays a heart; West must cover with the king or else Declarer's job is easy.  When West covers, the trick is won with North's ace of hearts.  Declarer cannot continue hearts due to the blockage, therefore he must play the club queen or jack.  The key is that on this trick Declarer must discard his remaining heart.  Now even if West exits a heart Declarer will be able to win in the north hand with the seven and cash his remaining good club.