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

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Four authors — Lindqvist, Okafor, Tanaka, and Petrova — each have exactly one bookmark and cover colour, and no two share any of them. Match each author to their bookmark and cover colour from these clues: 1. The author whose book holds a receipt is the author with the white cover. 2. The author whose book holds a pressed leaf is the author with the green cover. 3. Lindqvist is not the author whose book holds a postcard. 4. Lindqvist is not the author whose book holds a receipt. 5. Tanaka is not the author with the black cover. 6. The author whose book holds a ribbon bookmark is the author with the blue cover. 7. Okafor is not the author whose book holds a postcard. 8. Tanaka is not the author with the green cover. 9. Tanaka 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 matching, which cover colour goes with “Tanaka”? Answer with just the cover colour.

Hints

Solution

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