Tip 1 -   Contract 3 NT by South           (Degree of difficulty = 8)

West leads the Queen of hearts. How should South plan his play?

Tip 2 -   Contract 4 © by South           (Degree of difficulty = 6)

After West interfered 1 spade, N/S play the contract of 4  with the Moysian fit (4-3). West leads the Ace, King and Queen of spadees. How should South plan his play?

Tip 3 -   Contract 6 © by South           (Degree of difficulty = 5)

West leads the Queen of hearts. How should South plan his play?

Tip 4 -   Contract 4 © by South           (Degree of difficulty = 7)

After West interfered 1 spade, he now leads the King of spades. How should South plan his play?

Tip 5 -   Contract 3 NT by South           (Degree of difficulty = 10)

West leads the 4 of hearts. How should South plan his play?

Tip 6 -   Contract 6 ª by South           (Degree of difficulty = 9 + 3)

West leads the T of diamonds. South tries to make the trick with the Queen of dummy but East inserts the king. How should South play to take in a safe port this contract which is not a sure one?
If you want to gain the an extra 3 points, answer at the following question: which is the likehood to make the contract?