Roboku
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Case 58: who took the Antique Violin?
At closing time at the theater, security confirmed that the Antique Violin was missing; it was last seen in the Dressing Room. The cameras show nothing out of the ordinary, which points to someone who was already inside. Help the police unmask the thief.
The board
- 1Costume Room
- 2Café
- 3Restrooms
- 4Rehearsal Room
- 5Storage Room
- 6Dressing Room
- 7Stage
- 8Private Box
- 9Props Room
- 10Office
- 11Box Office
- 12Makeup Room
- Plant: no character can stand on its cell, but the stolen item can be there.
- Seat: anyone can be on it.
- Shelf: no character can stand on its cell, but the stolen item can be there.
- Table: nothing can be on its cell.
- Screen: nothing can be on its cell.
Suspects and clues
- LLiu
He's in column I and in the Storage Room. - HHugo
He's in row 10. - XXiomara
She's 6 rows away from the Stage. - MMatthew
He's in column H. - FFarah
She's next to a plant. - PPeter
He's right next to the Costume Room. - SSven
He's in a corner and in the Rehearsal Room. - NNoah
He's 4 columns away from the Café and 7 rows away from the Storage Room. - OOmar
He's 7 columns away from the Props Room and 3 rows away from the Restrooms. - AAntique Violin (stolen item)
It's 2 rows away from the Makeup Room.
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
- Liu's clue: He's in column I and in the Storage Room. It leaves a single cell: I9.
- Hugo's clue: He's in row 10. 9 cells remain possible.
- Xiomara's clue: She's 6 rows away from the Stage. It leaves a single cell: B4.
- Matthew's clue: He's in column H. 12 cells remain possible.
- Farah's clue: She's next to a plant. 6 cells remain possible: J5, L5, C6, K6, D7 and C8.
- Peter's clue: He's right next to the Costume Room. 20 cells remain possible.
- Sven's clue: He's in a corner and in the Rehearsal Room. 6 cells remain possible: G3, H3, H4, E5, F6 and G7.
- Noah's clue: He's 4 columns away from the Café and 7 rows away from the Storage Room. It leaves a single cell: F3.
- Omar's clue: He's 7 columns away from the Props Room and 3 rows away from the Restrooms. It leaves a single cell: J1.
- The stolen item's clue: It's 2 rows away from the Makeup Room. It leaves a single cell: L6.
- Liu can only be on I9. No one else can be in row 9 or column I, and no other character can be in the Storage Room.
- Xiomara can only be on B4. No one else can be in row 4 or column B, and no other character can be in the Private Box.
- Noah can only be on F3. No one else can be in row 3 or column F, and no other character can be in the Costume Room.
- Omar can only be on J1. No one else can be in row 1 or column J, and no other character can be in the Café.
- Every other cell the clue allowed has already been ruled out, so Peter can only be on C2. No one else can be in row 2 or column C, and no other character can be in the Props Room.
- The Antique Violin can only be on L6. No one else can be in row 6 or column L.
- J5, L5, C6, K6 and C8 have already been ruled out, so Farah can only be on D7. No one else can be in row 7 or column D, and no other character can be in the Dressing Room.
- G3, H3, H4, F6 and G7 have already been ruled out, so Sven can only be on E5. No one else can be in row 5 or column E, and no other character can be in the Rehearsal Room.
- Every other cell the clue allowed has already been ruled out, so Matthew can only be on H8.
- The Antique Violin can only be in the Restrooms, and Hugo is the only character who can still get in there. Since the thief shares a room with the item, Hugo must be in the Restrooms.
- A10, B10, C10, F10, G10, H10, J10 and L10 have already been ruled out, so Hugo can only be on K10.
Conclusion: Hugo is the only person sharing the Restrooms with the Antique Violin, which is on L6. He is the thief.