QED Night
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The Five Platforms: Jonas, Priya, Zara, Luca, and Mateo

Verified— unique solution
zebra
Five platforms 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 traveler reading a manual is immediately to the right of the traveler with the satchel. 2. The traveler bound for Prague is not the traveler with the suitcase. 3. Priya is the traveler bound for Vienna. 4. Luca is immediately to the left of the traveler bound for Kraków. 5. The traveler bound for Bruges is immediately to the right of the traveler reading a newspaper. 6. The traveler reading a novel is somewhere to the left of the traveler with the guitar case. 7. Luca is immediately to the left of the traveler reading a comic. 8. Mateo is immediately to the left of the traveler holding a day-return ticket. 9. Jonas is somewhere to the left of the traveler holding a rail pass. 10. The traveler doing a crossword is not Priya. 11. The traveler bound for Bruges is immediately to the left of the traveler with the duffel bag. 12. Jonas is somewhere to the left of the traveler with the trunk. 13. The traveler with the duffel bag is immediately to the left of the traveler holding a group fare. 14. Jonas is immediately to the left of the traveler holding a first-class ticket. 15. The traveler with the guitar case is immediately to the left of the traveler holding a day-return ticket.

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

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