The Five Shelves: Tanaka, Moreau, Petrova, Vásquez, and Lindqvist
Verified— unique solution
zebra
Five shelves stand in a row, numbered 1 to 5 from left to right. Each holds exactly one of each attribute, and no attribute repeats. Work out the full arrangement from these clues:
1. The author whose book holds a pressed leaf is immediately to the right of Tanaka.
2. The poet is somewhere to the left of the author with the cloth-bound edition.
3. The author whose book holds a feather is directly next to the author whose book holds a ribbon bookmark.
4. The author with the leather-bound edition is not the poet.
5. The author with the black cover is immediately to the right of the author whose book holds a ticket stub.
6. The author with the green cover is immediately to the right of Vásquez.
7. The author with the black cover is not Vásquez.
8. Moreau is directly next to the author whose book holds a feather.
9. The author with the paperback is immediately to the left of the author with the cloth-bound edition.
10. Petrova is directly next to the historian.
11. The author with the green cover is immediately to the left of Petrova.
12. The author with the blue cover is immediately to the right of the cookbook writer.
13. The author with the leather-bound edition is immediately to the left of the author with the spiral-bound edition.
14. The science-fiction writer is immediately to the left of the author with the cloth-bound edition.
15. The author whose book holds a postcard is not the poet.
16. The author with the green cover is immediately to the left of the author with the white cover.
17. The author with the spiral-bound edition is not the author with the white cover.
Hints
Hint 1
Hint 2
Hint 3
Solution
Commit an attempt to unseal the proof. Write your answer — right or wrong, thinking it through is the point.
In the final arrangement, which numbered shelf (1–5) does “Lindqvist” end up at? Answer with the number.
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