Deal 9
 
  3NT
OL: 5
♠ K J 6
J 10 6 3
A Q 6
♣ Q 10 5
 
 WEST  NORTH  EAST  SOUTH
1NT
pass3NTpasspass
pass

You are East. The bidding has been as shown.
Partner led the 5, dummy played the 10 and it is your play.

When you have made your choice click NEXT .

5

♠ 9 7 3 2
--
10 9 8 4 3
♣ A K J 9
 


 

 
Deal 9
 
  3NT
OL: 5
♠ K J 6
J 10 6 3
A Q 6
♣ Q 10 5
  Play the 3 (or the ♠2).

You really want West to lead a ♣ if he gets into the lead.
If you discard the ♣9 West will surely get the message and will lead a ♣.
BUT - you will only win 3 ♣ tricks. The ♣9 would have been the fourth winner.

So instead, play a low card in one of the other suits, say the 3.

South is one trick short and he sees he can easily get that trick in s.
So he plays a second from dummy and you now discard the ♠2.
West takes the A and he can see that you don't want him to lead a ♠ or a .
He deduces that you might like a ♣ so he plays his ♣2 and you win 4 tricks.

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