1. Use clues 9, 10, 15 directly.
2. Clue 6 implies that the green house must be house 3, 4, or 5.
3. Clue 4 implies that the green house with coffee must be house 4 or 5.
4. Clue 6 implies that either house 3 or 4 is white.
5. Clue 2 implies that the red house with the American is house 3 or 5.
6. Clue 8 implies that the yellow house with the polo player is house 1.
7. Clue 12 implies that the horse is in house 2.
8. Clue 13 implies that the hiker with orange juice is in house 2, 4, or
5.
9. Only here do we have to make an assumption and see where it leads.
Assume
that the green house with coffee is house 5; if this doesn't work,
then come back to here and assume that the green house with
coffee
is house 4.
10. Clue 6 implies that house 4 is white.
11. Clue 2 implies that the red house with the American is house 3.
12. Clue 5 implies that the Ukrainian with tea is in house 3.
13. Clue 13 implies that the hiker with orange juice is in house 4.
14. Clue 14 implies that the Japanese with surfing is in house 5.
15. This leaves only house 1 for the water drinker.
16. Clue 7 implies that soccer and snails go in house 3.
17. Clue 11 implies that skiing is in house 2 and the fox is in house 1.
18. Clue 3 implies that the Spaniard with the dog is in house 4.
19. This leaves the zebra in house 5.
20. The remaining blanks can be filled
directly.
Final Arrangement