South took his winners but had to guess at the 12th trick when he led the heart five and the three appeared on his left.
The best the defense could do was to take East's winners.
He led his diamond jack, and East took her winners.
After a heart lead he took dummy's two winners in the suit and followed with three clubs.
South took dummy's three winners, leaving the jack at large.
The next move was to surrender a diamond trick to West, who took his winners in that suit.
South led a trump from dummy, and West took his two winners before shifting to a low heart.
East shifted to a club, and West took his two winners and led a heart.
West took his two winners and shifted to the diamond king.
A heart was led against three no-trump, and East took his two winners.