The Five Lanes: Elif, Aiko, Bruno, Dario, and Gustav
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 running on petrol is somewhere to the left of the driver running on hydrogen.
2. The driver sponsored by the dairy is not Dario.
3. Bruno is somewhere to the left of the driver with the hawk mascot.
4. The driver with the owl mascot is immediately to the left of the driver sponsored by the brewery.
5. The driver of the hybrid is immediately to the left of Aiko.
6. The driver running on petrol is immediately to the left of the driver running on biofuel.
7. Gustav is directly next to the driver running on diesel.
8. The driver running on petrol is Dario.
9. The driver with the fox mascot is immediately to the right of the driver sponsored by the brewery.
10. The driver sponsored by the toy shop is somewhere to the left of Elif.
11. The driver with the shark mascot is immediately to the right of the driver running on petrol.
12. The driver running on diesel is not Bruno.
13. The driver sponsored by the toy shop is directly next to the driver sponsored by the bakery.
14. The driver sponsored by the brewery is immediately to the right of the driver sponsored by the toy shop.
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 “Dario” end up at? Answer with the number.
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