QED Night
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The Five Lanes: Dario, Cleo, Bruno, Aiko, and Elif

Verified— unique solution
zebra
Five lanes 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 driver of the blue car is immediately to the left of the driver sponsored by the dairy. 2. The driver sponsored by the airline is not Bruno. 3. The driver with the shark mascot is not the driver running on biofuel. 4. Dario is immediately to the right of the driver with the hawk mascot. 5. Aiko is directly next to the driver with the bear mascot. 6. Aiko is somewhere to the left of the driver of the red car. 7. The driver running on hydrogen is not Cleo. 8. The driver running on diesel is immediately to the right of Aiko. 9. The driver with the bear mascot is somewhere to the left of Cleo. 10. The driver with the owl mascot is somewhere to the left of Dario. 11. The driver sponsored by the bakery is immediately to the left of the driver sponsored by the dairy. 12. The driver of the green car is not Cleo. 13. Dario is immediately to the left of the driver running on hydrogen. 14. The driver of the green car is immediately to the right of the driver with the shark mascot. 15. The driver sponsored by the bakery is directly next to the driver of the silver car. 16. Bruno is immediately to the left of the driver sponsored by the bank. 17. Aiko is immediately to the right of the driver of the hybrid.

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 lane (1–5) does “Elif” end up at? Answer with the number.

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