Fox, Duck, Corn and the Farmer
A man went on a trip with a fox, a goose and a sack of corn. He came
upon a stream which he had to cross and found a tiny boat to use to
cross the stream. He could only take himself and one other - the fox,
the goose, or the corn - at a time. He could not leave the fox alone
with the goose or the goose alone with the corn. How does he get all
safely over the stream?