If East plays the nine, he is sure to defeat the contract.

Now West led the only card to defeat the contract: the heart king.

With the cards as shown, he has a good chance to defeat the contract.

Another way to defeat the contract was for West to start with the diamond king.

But if West had taken the trick and led either a heart or his club, he would have defeated the contract.

This defense, intended to defeat the contract, gave South no trouble.

West won the last trick with her club nine to defeat the contract.

A club lead would have defeated the contract, but West had no reason to know that.

The play of the heart 10 (not the seven) at the third trick is the only way to defeat the contract.

South ducked, and another club lead from East defeated the contract.