East put up the ace to return the eight-spot for the ten and jack. West elected to switch to a heart as partner won the ace and exited with the ten for dummy's jack. An advance of the queen of spades was successful as West contributed the ten. Declarer drew trump with another finesse and disposed of a diamond from hand on the fourth heart to emerge with an overtrick, N-S +170. The partscore would have suffered defeat if West had produced the king of spades since he would have delivered the heart ruff. Admittedly, this was unlikely since West had shown up with king-jack of clubs and East had opened the bidding. The major suit game was essentially dependent upon avoiding the loss of a trump trick. Spades divided 3-1 but the singleton ten in West guaranteed ten tricks.
North's artificial jump to three diamonds was a Bergen raise promising a four-card limit raise of spades. Since South owned a balanced 11 HCP, he signed off at three spades which could potentially have been a notch too high on another layout. Bergen Raises are a useful tool to have available and should be employed whether partner has opened in a major or overcalled, as long the response is a jump.