Deal 12
 
  1NT
OL: ♣K
♠ J 6 3
A K 10 9 8
8 2
♣ 10 9 4
 
 WEST  NORTH  EAST  SOUTH
1
pass1pass1NT
passpasspass

You are West. The bidding has been as shown.

You lead the ♣K and continue with the ♣J then ♣Q, taken by South's ♣A.
To trick 4 South plays the 4. What do you play?

When you have made your choice click NEXT .
♠ Q 9 2
Q 3
Q J 10 6
♣ K Q J 8
♠ 4


♣ 5 3
 
4

♣ A 6 2
 

 
Deal 12
 
  1NT
OL: ♣K
♠ J 6 3
A K 10 9 8
8 2
♣ 10 9 4
  Play the Q.

To see why you should play the Q, just visualize the result if you play low.
South will finesse with dummy's 8.
If East wins his J on this trick there will be 4 good tricks in dummy.
If East withholds his J then Declarer will have 3 winners.

Now visualize the result of playing the Q.
Whether South takes this trick or not he cannot win more than 2 s.

 Deal 13 
♠ Q 9 2
Q 3
Q J 10 6
♣ K Q J 8
♠ A 10 7 4
J 6 5 2
9 5 4
♣ 5 3
  ♠ K 8 5
7 4
A K 7 3
♣ A 7 6 2