The Five Shelves: Okafor, Petrova, Vásquez, Tanaka, 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 with the paperback is directly next to the mystery writer. 2. The memoirist is immediately to the left of the author with the boxed set. 3. Okafor is immediately to the right of the author with the gold cover. 4. Lindqvist is immediately to the left of the science-fiction writer. 5. The author with the red cover is somewhere to the left of the author with the white cover. 6. Tanaka is immediately to the right of the historian. 7. The science-fiction writer is somewhere to the left of Petrova. 8. The historian is not the author with the cloth-bound edition. 9. The author with the blue cover is immediately to the left of the poet. 10. The mystery writer is not Vásquez. 11. The author with the blue cover is immediately to the right of the author with the red cover. 12. The author with the white cover is immediately to the left of the author with the spiral-bound edition. 13. The author with the paperback is not Okafor.

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 “Vásquez” end up at? Answer with the number.

Hints

Solution

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