The Four Lanes: Cleo, Bruno, Elif, and Aiko

Verified— unique solution

logic grid

Four drivers — Cleo, Bruno, Elif, and Aiko — each have exactly one sponsor, car colour, and fuel, and no two share any of them. Match each driver to their sponsor, car colour, and fuel from these clues: 1. The driver of the yellow car is the driver running on hydrogen. 2. The driver sponsored by the bank is the driver running on diesel. 3. The driver sponsored by the brewery is the driver running on petrol. 4. Aiko is not the driver of the yellow car. 5. The driver of the silver car is the driver running on diesel. 6. Aiko is not the driver of the red car. 7. The driver sponsored by the toy shop is the driver of the red car. 8. Aiko is not the driver running on petrol. 9. Cleo is not the driver sponsored by the toy shop. 10. Bruno is not the driver of the black car. 11. Cleo is not the driver running on petrol.

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 fuel goes with “Cleo”? Answer with just the fuel.

Hints

Solution

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