The Four Shelves: Lindqvist, Okafor, Petrova, and Tanaka

Verified— unique solution

logic grid

Four authors — Lindqvist, Okafor, Petrova, and Tanaka — each have exactly one bookmark, cover colour, and binding, and no two share any of them. Match each author to their bookmark, cover colour, and binding from these clues: 1. The author with the gold cover is the author with the leather-bound edition. 2. The author whose book holds a ribbon bookmark is the author with the leather-bound edition. 3. The author whose book holds a receipt is the author with the red cover. 4. Tanaka is not the author with the blue cover. 5. The author whose book holds a pressed leaf is the author with the boxed set. 6. Tanaka is not the author whose book holds a ribbon bookmark. 7. Okafor is not the author with the cloth-bound edition. 8. Lindqvist is not the author with the leather-bound edition. 9. Okafor is not the author whose book holds a ribbon bookmark. 10. Okafor is not the author with the boxed set. 11. The author with the blue cover is the author with the cloth-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 binding goes with “Petrova”? Answer with just the binding.

Hints

Solution

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