Case 17: who took the Golden Helmet?

Difficulty: ★★★☆☆ · Board 7×7 · 6 suspects

Amid the chaos of a school visit at the museum, someone took advantage of the confusion to make off with the Golden Helmet, on display in the Office. For once, the suspect list doesn't include any nine-year-olds. Help the police unmask the thief.

The board

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Suspects and clues

Remember the rules: no two suspects (nor the item) ever share a row or a column, each character is in a different room, and the thief is the only one sharing a room with the stolen item. Unsure? Read how to play and the clue types.

Solution

Try it yourself first: pen and paper are enough. When you want to check, open the reasoned solution.

Show the step-by-step solution
  1. Javier's clue: He's in the Archive and in row 7. 4 cells remain possible: D7, E7, F7 and G7.
  2. Ivan's clue: He's 2 columns away from the Restoration Room. It leaves a single cell: D2.
  3. Wendy's clue: She's next to a shelf. 2 cells remain possible: E1 and F2.
  4. Tariq's clue: He's in column A. 4 cells remain possible: A1, A2, A6 and A7.
  5. Aisha's clue: She's 2 rows away from the Restoration Room. It leaves a single cell: B4.
  6. Farah's clue: She's right next to the Main Hall and in a corner. 5 cells remain possible: D1, E1, G2, E3 and G3.
  7. The stolen item's clue: It's not in the Storage Room. 32 cells remain possible.
  8. Ivan can only be on D2. No one else can be in row 2 or column D, and no other character can be in the Restrooms.
  9. F2 has already been ruled out, so Wendy can only be on E1. No one else can be in row 1 or column E, and no other character can be in the Main Hall.
  10. Aisha can only be on B4. No one else can be in row 4 or column B, and no other character can be in the Exhibition Hall.
  11. D1, E1, G2 and E3 have already been ruled out, so Farah can only be on G3. No one else can be in row 3 or column G, and no other character can be in the Storage Room.
  12. D7, E7 and G7 have already been ruled out, so Javier can only be on F7. No one else can be in row 7 or column F, and no other character can be in the Archive.
  13. A1, A2 and A7 have already been ruled out, so Tariq can only be on A6. No one else can be in row 6 or column A, and no other character can be in the Office.
  14. Every other cell the clue allowed has already been ruled out, so the Golden Helmet can only be on C5.

Conclusion: Aisha is the only person sharing the Exhibition Hall with the Golden Helmet, which is on C5. She is the thief.

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