Deal 5
 
  4
OL: ♣A
♠ A
K 10 8 2
A Q 7 3
♣ J 8 6 2
 
 WEST  NORTH  EAST  SOUTH
1pass1
pass2pass4
passpasspass

You are East. The bidding has been as shown.
Partner led the ♣A, dummy played the ♣2 and it is your play.

When you have made your choice click NEXT .



♣ A
♠ Q 10 8 4
Q J 9
K 9 5 2
♣ 9 3
 


 

 
Deal 5
 
  4
OL: ♣A
♠ A
K 10 8 2
A Q 7 3
♣ J 8 6 2
  Play the ♣3.

If you signal with the ♣9 West will continue with the ♣K and another which you will have to ruff.
You will give up your NATURAL trump trick by doing so.
Worse, you will allow North's ♣J to be established as a winner that South can later discard a on.

Much better to play low. Partner will surely switch to a , and South will probably finesse, though it doesn't matter whether he does or not.
You will win the K, return the ♣9 back to West's ♣K, and still have your trump trick for later.

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