Roboku
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Case 60: who took the Ruby Brooch?
The guard on duty at the theater admits, a little embarrassed, that he dozed off for ten minutes. When he woke up, the Ruby Brooch, resting in the Storage Room, was gone. He swears he doesn't snore that loudly. Help the police unmask the thief.
The board
- 1Dressing Room
- 2Stage
- 3Private Box
- 4Makeup Room
- 5Rehearsal Room
- 6Costume Room
- 7Props Room
- 8Lobby
- 9Storage Room
- 10Box Office
- 11Restrooms
- 12Café
- 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
- WWendy
She's 6 columns away from the Makeup Room and in a corner. - SSandra
She's 5 rows away from the Box Office and 6 rows away from the Café. - LLucy
She's 4 columns away from the Box Office and in row 9. - AAmara
She's 6 rows away from the Private Box. - TTariq
He's next to a seat. - XXiomara
She's not next to any wall. - NNoah
He's in column K. - RRuby Brooch (stolen item)
It's 7 rows away from the Stage.
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
- Wendy's clue: She's 6 columns away from the Makeup Room and in a corner. 3 cells remain possible: J4, I5 and I6.
- Sandra's clue: She's 5 rows away from the Box Office and 6 rows away from the Café. It leaves a single cell: E6.
- Lucy's clue: She's 4 columns away from the Box Office and in row 9. 2 cells remain possible: B9 and L9.
- Amara's clue: She's 6 rows away from the Private Box. It leaves a single cell: A4.
- Tariq's clue: He's next to a seat. 8 cells remain possible.
- Xiomara's clue: She's not next to any wall. 31 cells remain possible.
- Noah's clue: He's in column K. 9 cells remain possible.
- The stolen item's clue: It's 7 rows away from the Stage. It leaves a single cell: C2.
- Sandra can only be on E6. No one else can be in row 6 or column E, and no other character can be in the Dressing Room.
- Amara can only be on A4. No one else can be in row 4 or column A, and no other character can be in the Makeup Room.
- J4 and I6 have already been ruled out, so Wendy can only be on I5. No one else can be in row 5 or column I, and no other character can be in the Props Room.
- The Ruby Brooch can only be on C2.
- Every cell still open to Lucy is in row 9, so no one else can be in that row.
- Every cell still open to Tariq is in the Storage Room, so no other character can be there.
- L9 has already been ruled out, so Lucy can only be on B9. No one else can be in row 9 or column B, and no other character can be in the Private Box.
- K1, K2, K3, K4, K5, K9, K10 and K12 have already been ruled out, so Noah can only be on K7. No one else can be in row 7 or column K, and no other character can be in the Lobby.
- K1, J2, L2, K3, J9, I10 and K10 have already been ruled out, so Tariq can only be on J11.
- Every other cell the clue allowed has already been ruled out, so Xiomara can only be on G10.
Conclusion: Amara is the only person sharing the Makeup Room with the Ruby Brooch, which is on C2. She is the thief.