Roboku
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Case 45: who took the Antique Violin?
At 3:10 this morning, the alarm went off at the theater. After the authorities and the venue's staff arrived, an inventory was carried out, and it turned out that the Antique Violin, which had been on display in the Orchestra Pit, was missing. Help the police unmask the thief.
The board
- 1Storage Room
- 2Box Office
- 3Office
- 4Costume Room
- 5Dressing Room
- 6Stage
- 7Rehearsal Room
- 8Café
- 9Makeup Room
- 10Restrooms
- 11Props Room
- 12Orchestra Pit
- 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.
- Window: the blue line on a wall.
Suspects and clues
- GGustavo
He's 5 columns away from the Restrooms. - FFatima
She's 6 rows away from the Box Office, and she's not next to any wall. - HHugo
He's 6 rows away from the Orchestra Pit. - LLiu
He's 5 rows away from the Office. - ZZara
She's 1 column away from the Costume Room, and she's not in the Makeup Room. - BBilal
He's 7 columns away from the Office. - KKenji
He's 3 columns away from the Props Room. - AAntique Violin (stolen item)
It's 8 rows away from the Storage Room, and it's not in the Dressing Room.
Extra clue: No one is in 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
- Gustavo's clue: He's 5 columns away from the Restrooms. 2 cells remain possible: B6 and A7.
- Fatima's clue: She's 6 rows away from the Box Office, and she's not next to any wall. 2 cells remain possible: F2 and I3.
- Hugo's clue: He's 6 rows away from the Orchestra Pit. It leaves a single cell: G11.
- Liu's clue: He's 5 rows away from the Office. 2 cells remain possible: C1 and E1.
- Zara's clue: She's 1 column away from the Costume Room, and she's not in the Makeup Room. 3 cells remain possible: E2, F3 and E4.
- Bilal's clue: He's 7 columns away from the Office. It leaves a single cell: K5.
- Kenji's clue: He's 3 columns away from the Props Room. 2 cells remain possible: F1 and D2.
- The stolen item's clue: It's 8 rows away from the Storage Room, and it's not in the Dressing Room. 2 cells remain possible: H9 and G10.
- Extra clue: No one is in the Makeup Room. No character can stand on those cells.
- B6 has already been ruled out, so Gustavo can only be on A7.
- Hugo can only be on G11. No one else can be in row 11 or column G, and no other character can be in the Box Office.
- Bilal can only be on K5.
- G10 has already been ruled out, so the Antique Violin can only be on H9.
- Every cell still open to Liu is in row 1, so no one else can be in that row.
- F1 has already been ruled out, so Kenji can only be on D2. No one else can be in row 2 or column D, and no other character can be in the Costume Room.
- F2 has already been ruled out, so Fatima can only be on I3. No one else can be in row 3 or column I, and no other character can be in the Rehearsal Room.
- E2 and F3 have already been ruled out, so Zara can only be on E4. No one else can be in row 4 or column E, and no other character can be in the Orchestra Pit.
- E1 has already been ruled out, so Liu can only be on C1.
Conclusion: Hugo is the only person sharing the Box Office with the Antique Violin, which is on H9. He is the thief.