Case 44: who took the Star Sapphire?

Difficulty: ★★★★★ · Board 11×11 · 7 suspects

During last night's private gala at the theater, a guest must have gotten a little too close to the Star Sapphire, on display in the Storage Room, because it was gone by morning. The guest list is short; so is the room for error. Help the police unmask the thief.

The board

ABCDEFGHIJK1234567891011SeatShelfPlantScreenTablePlant123456789101112

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. Dana's clue: She's in row 5. 10 cells remain possible.
  2. Carla's clue: She's 6 columns away from the Stage. It leaves a single cell: A10.
  3. Amara's clue: She's next to a window. 9 cells remain possible.
  4. Grace's clue: She's right next to the Stage. 2 cells remain possible: G9 and H10.
  5. Hana's clue: She's 7 rows away from the Office. It leaves a single cell: D1.
  6. Xiomara's clue: She's 2 rows away from the Lobby, and she's not next to any wall. 2 cells remain possible: I4 and J5.
  7. Priya's clue: She's next to a seat. 4 cells remain possible: J1, I2, K2 and J3.
  8. The stolen item's clue: It's next to a shelf and a wall. It leaves a single cell: E8.
  9. Carla can only be on A10. No one else can be in row 10 or column A, and no other character can be in the Rehearsal Room.
  10. H10 has already been ruled out, so Grace can only be on G9. No one else can be in row 9 or column G, and no other character can be in the Orchestra Pit.
  11. Hana can only be on D1. No one else can be in row 1 or column D, and no other character can be in the Café.
  12. B1, G1, I1, A5, G10, J10, K10 and C11 have already been ruled out, so Amara can only be on B2. No one else can be in row 2 or column B, and no other character can be in the Makeup Room.
  13. J1, I2 and K2 have already been ruled out, so Priya can only be on J3. No one else can be in row 3 or column J, and no other character can be in the Lobby.
  14. J5 has already been ruled out, so Xiomara can only be on I4. No one else can be in row 4 or column I, and no other character can be in the Props Room.
  15. The Star Sapphire can only be on E8. No one else can be in row 8 or column E.
  16. Every other cell the clue allowed has already been ruled out, so Dana can only be on F5.

Conclusion: Dana is the only person sharing the Restrooms with the Star Sapphire, which is on E8. She is the thief.

ABCDEFGHIJK1234567891011SeatShelfPlantScreenTablePlant123456789101112DCAGHXPS

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