But the boy replied, “That is easy enough: I can guess this riddle.”
So he took and undressed himself from head to foot, put a net on himself, came on a goat, came up to the Tsar at twilight, and mounted the goat at the gate, leaving the forefeet of the goat on the courtyard and the hind feet in the street.
When the Tsar saw this, he became convinced and said, “This must be my son!”