He later lost a trick to the club king for down one.
South eventually lost a trick to the heart king for down one.
But he had to lose a trick at the finish for down one.
One would expect South to lose a trick in each suit, for 300.
"Lost a trick to the new kid on the block too."
South was willing to lose two trump tricks, but he lost three.
Later he lost a trick to the 10 and went down in his vulnerable slam.
But he then had no way to avoid losing a trick to the heart queen.
The danger is that you may lose a trick in each suit.
He made his contract, losing a trick in each side suit.