Deal 16
 
 
 
♠ Q 10
K Q 5 3
A 8 6 3
♣ 8 5 2
 
 WEST  NORTH  EAST  SOUTH
1NT
pass2♣pass2
pass3NTpasspass
pass

South is to play 3NT.
West leads the ♠3. East plays the ♠5.

Make a Plan, then click NEXT .
   
  ♠ J 7 4
A 7
K 7 5 2
♣ A K 7 3
 

 
Deal 16
3NT
OL: ♠3
 
♠ Q 10
K Q 5 3
A 8 6 3
♣ 8 5 2
  From the opening lead of ♠3 and East's play of ♠5 you should have deduced that West held five ♠s to the A K. Therefore if you lose a trick in any other suit West will be able to take 4 ♠ tricks and defeat you.

You have 8 winners, and if East holds 4+ s AND 3+ s then only he can guard the two suits.

But how can you squeeze him?

 NEXT 
♠ A K 9 3 2
10 4 2
J 9
♣ J 6 4
♠ 8 6 5
J 9 8 6
Q 10 4
♣ Q 10 9
  ♠ J 7 4
A 7
K 7 5 2
♣ A K 7 3
 

 
Deal 16
3NT
OL: ♠3
 
♠ Q
K Q 5 3
A 8 6 3
♣ 8 5 2
  The answer to that question is that YOU cannot squeeze him.

But maybe you can make his partner do the job for you.

At trick 2 you play a ♠.

 NEXT 
♠ A K 9 2
10 4 2
J 9
♣ J 6 4
♠ 8 6
J 9 8 6
Q 10 4
♣ Q 10 9
  ♠ J 7
A 7
K 7 5 2
♣ A K 7 3
 

 
Deal 16
3NT
OL: ♠3
 
♠  
K Q 5 3
A 8 6 3
♣ 8 5 2
  Of course West will win this with his ♠K.

And he will no doubt continue with the ♠A and ♠9.

You discard 2 s from dummy and a ♣ from your hand.

East cannot spare either a or a so he also throws a ♣.

 NEXT 
♠ A 9 2
10 4 2
J 9
♣ J 6 4
♠ 8
J 9 8 6
Q 10 4
♣ Q 10 9
  ♠ J
A 7
K 7 5 2
♣ A K 7 3
 

 
Deal 16
3NT
OL: ♠3
 
♠  
K Q 5 3
A 8
♣ 8 5 2
  ***Remember this position***

West will almost surely cash his ♠2.

You and dummy both discard a ♣ and East also must discard a ♣.

It doesn't matter what West plays next, lets say it is a ♣.

 NEXT 
♠ 2
10 4 2
J 9
♣ J 6 4
♠  
J 9 8 6
Q 10 4
♣ Q 10
  ♠  
A 7
K 7 5 2
♣ A K 7
 

 
Deal 16
3NT
OL: ♠3
 
♠  
K Q 5 3
A 8
♣ 8
  In your hand with the ♣K, you now play the ♣A.

East is truly squeezed. If he discards a , dummy's 5 will become a winner. but if he discards a then you will get a third trick and the contract.

Since it was West who started the squeeze by cashing his last ♠, this is called a Suicide Squeeze.
BUT, what if West had not cashed that ♠?

 NEXT 
♠  
10 4 2
J 9
♣ J 6
♠  
J 9 8 6
Q 10 4
♣  
  ♠  
A 7
K 7 5 2
♣ A
 

 
Deal 16
3NT
OL: ♠3
 
♠  
K Q 5 3
A 8
♣ 8 5 2
  ***Here is the position you were supposed to remember***

Suppose West is a really expert defender and avoids the Suicide Squeeze by just refusing to cash his winning ♠. It doesn't matter what else he plays instead, so let us assume it is a ♣.

You win in your hand and establish a winner by playing A, K, and a small . East wins but cannot reach his partner's hand for that good ♠.

So you establish a winner and make your contract.

 Deal 17 
♠ 2
10 4 2
J 9
♣ J 6 4
♠  
J 9 8 6
Q 10 4
♣ Q 10
  ♠  
A 7
K 7 5 2
♣ A K 7