First, though, what should be the result in five diamonds by South?

If all this was true, East had to be short in diamonds.

The game then made easily because South knew what to do in diamonds.

There is also a desire for more companies to trade in diamonds.

West was still connected to the East hand in diamonds.

Then South could be sure of building up a 10th trick in diamonds.

Now it was too late for a winning guess in diamonds to do any good.

Thus South's first play in diamonds should have been the ace.

Eventually he made the winning guess in diamonds to make his game.

The A center is probably the most common defect in natural diamonds.