Deal 7
 
  6
OL: J
♠ A K 9 4
K Q 6
A Q 4
♣ 10 8 6
 
 WEST  NORTH  EAST  SOUTH
1♣pass1
pass2NTpass6
passpasspass

You are East. The bidding has been as shown, (wild).

Partner led the J; Q from dummy, K from you and ruffed by South.

South then pulls two rounds of trumps, (West discards on the second one), followed by his ♠Q, dummy's ♠ A K and dummy's A.
South discards ♣s on the last two cards.

The ♣6 is then played from dummy and you must make a decision - ♣A or ♣2?

When you have made your choice click NEXT .
♠ 8 7 3
10
J 8 5
♠ 10 6 2
7 3
K 7 6 3
♣ A 9 4 2
  ♠ Q 5
A 4 2
--
♣ 7 3
 

 
Deal 7
 
  6
OL: J
♠ A K 9 4
K Q 6
A Q 4
♣ 10 8 6
  Play the ♣2.

You have a full count on South's hand.
He started with 2 ♠s, 7 s, and no s.
His other 4 cards must have been ♣s, and he has discarded 2 of them.

So he has 2 ♣s left in his hand. If one of them is the ♣K and you play your ♣A then you have handed him the contract.

By playing low you give him a guess to make.
If he plays the ♣K he will make the contract, but if he plays the ♣J he will go down.
He will probably play the ♣J, figuring you woudn't have the nerve to duck with the ♣A.
He'll know better next time he plays against you.

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