The Five Shelves: Lindqvist, Tanaka, Petrova, Okafor, and Vásquez
Verified— unique solution
logic grid
Five authors — Lindqvist, Tanaka, Petrova, Okafor, and Vásquez — each have exactly one cover colour, bookmark, and binding, and no two share any of them. Match each author to their cover colour, bookmark, and binding from these clues:
1. Vásquez is not the author with the spiral-bound edition.
2. The author whose book holds a ribbon bookmark is the author with the leather-bound edition.
3. Vásquez is not the author with the hardback.
4. Okafor is not the author whose book holds a ticket stub.
5. The author whose book holds a feather is the author with the hardback.
6. Okafor is not the author whose book holds a receipt.
7. Tanaka is not the author with the black cover.
8. The author with the green cover is the author with the cloth-bound edition.
9. The author with the black cover is the author with the boxed set.
10. Okafor is not the author with the green cover.
11. The author with the red cover is the author with the leather-bound edition.
12. Vásquez is not the author whose book holds a pressed leaf.
13. Vásquez is not the author with the boxed set.
14. The author whose book holds a ticket stub is the author with the boxed set.
15. The author with the blue cover is the author with the hardback.
16. Petrova is not the author with the boxed set.
17. Tanaka is not the author with the green cover.
18. The author whose book holds a receipt is the author with the spiral-bound edition.
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 matching, which cover colour goes with “Vásquez”? Answer with just the cover colour.
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