What Burn did in practice was to lead his singleton club at the second trick.

East played the nine, South took the ace and led his singleton club.

If East had led his singleton club the defense could have taken the first four tricks.

But this plan was useless when West led his singleton club.

The singleton club was indeed led to the queen, and East continued with the ace.

South won with the ace and led his singleton club.

On other leads, like a singleton club, the penalty would have been greater.

The singleton club was led to the king, and South dropped the queen.

The singleton club was led, and East put in the queen.

South's next move was to lead his singleton club, presenting West with an awkward choice.