# Einstein’s riddle

This is a riddle that Einstein devised when he was a child.

There are five houses painted in five different colours. A person with a different nationality lives in each house. The five house owners each drink a certain beverage, keep a certain pet, and play a certain game. No two house owners drink the same baverage or play the same sport or keep the same pet.

Facts:

1. The Briton lives in the red house.

2. The Swede keeps dogs as pets.

3. The Dane drinks tea.

4. The green house is on the left of the white house.

5. The owner of the green house drinks coffee.

6. The person who plays football rears birds.

7. The owner of the yellow house plays baseball.

8. The man living in the centre house drinks milk.

9. The Norwegian lives in the first house.

10. The man who plays volleyball lives next to the one who keeps cats.

11. The man who keeps the horse lives next to the man who plays baseball.

12. The owner who plays tennis drinks beer.

13. The German plays hockey.

14. The Norwegian lives next to the blue house.

15. The man who plays volleyball has a neighbor who drinks water.

QUESTION: Who owns the fish?

Try if you can solve this mentally. (Hint: You can make calculated guesses to start, and backtrack if some guesses go wrong.)

(In other versions of the riddle, playing a certain sport is replaced with smoking a certain type of cigar. But the crux of the riddle remains the same.)