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

Verified— unique solution

zebra

Four shelves stand in a row, numbered 1 to 4 from left to right. Each holds exactly one of each attribute, and no attribute repeats. Work out the full arrangement from these clues: 1. Petrova is directly next to Lindqvist. 2. Petrova is directly next to Tanaka. 3. The author with the cloth-bound edition is immediately to the left of Tanaka. 4. The author with the leather-bound edition is the author whose book holds a receipt. 5. Lindqvist is the author with the spiral-bound edition. 6. Vásquez is the author whose book holds a feather. 7. Tanaka is the author whose book holds a postcard.

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 (1–4) does “Vásquez” end up at? Answer with the number.

Hints

Solution

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