But he was left in a dilemma when South played two rounds of diamonds.

Then three rounds of diamonds gave West the lead, and the contract was safe.

Now South tried three rounds of diamonds, but the jack did not fall.

The obvious defense is for West to play three rounds of diamonds.

He may have wished that the defense would win the second round of diamonds, and they did.

He was hoping that the next round of diamonds would bring the ace from East.

South won with the king and ran five rounds of diamonds.

He therefore won the first trick and put pressure on the defense by running six rounds of diamonds.

East won with the king and played a third round of diamonds to the ace.

The heart ace was won, and three rounds of diamonds were played.