Roboku
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Case 24: who took the Ruby Brooch?
During last night's private gala at the theater, a guest must have gotten a little too close to the Ruby Brooch, on display in the Costume 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
- 1Stage
- 2Dressing Room
- 3Props Room
- 4Storage Room
- 5Office
- 6Orchestra Pit
- 7Rehearsal Room
- 8Café
- 9Private Box
- 10Box Office
- 11Lobby
- 12Costume 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
- AAmara
She's in the Dressing Room. - IInes
She's in column F. - CChidi
He's in row 3. - WWendy
She's in row 9 and 3 columns away from the Storage Room. - EEsteban
He's 5 columns away from the Props Room. - DDana
She's next to a plant. - LLucy
She's right next to the Café and in a corner. - RRuby Brooch (stolen item)
It's 7 rows away from the Private Box.
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
- Amara's clue: She's in the Dressing Room. 5 cells remain possible: D7, E7, D8, E8 and F8.
- Ines's clue: She's in column F. 7 cells remain possible.
- Chidi's clue: He's in row 3. 6 cells remain possible: A3, B3, C3, D3, F3 and G3.
- Wendy's clue: She's in row 9 and 3 columns away from the Storage Room. It leaves a single cell: C9.
- Esteban's clue: He's 5 columns away from the Props Room. It leaves a single cell: A7.
- Dana's clue: She's next to a plant. It leaves a single cell: H6.
- Lucy's clue: She's right next to the Café and in a corner. 4 cells remain possible: H4, E5, F5 and I5.
- The stolen item's clue: It's 7 rows away from the Private Box. It leaves a single cell: I1.
- Wendy can only be on C9. No one else can be in row 9 or column C, and no other character can be in the Costume Room.
- Esteban can only be on A7. No one else can be in row 7 or column A, and no other character can be in the Rehearsal Room.
- Dana can only be on H6. No one else can be in row 6 or column H, and no other character can be in the Props Room.
- The Ruby Brooch can only be on I1. No one else can be in row 1 or column I.
- Every cell still open to Amara is in row 8, so no one else can be in that row.
- Every cell still open to Ines is in column F, so no one else can be in that column.
- H4, F5 and I5 have already been ruled out, so Lucy can only be on E5. No one else can be in row 5 or column E, and no other character can be in the Box Office.
- D7, E7, E8 and F8 have already been ruled out, so Amara can only be on D8. No one else can be in row 8 or column D, and no other character can be in the Dressing Room.
- Every cell still open to Ines is in the Lobby, so no other character can be there.
- A3, C3, D3, F3 and G3 have already been ruled out, so Chidi can only be on B3. No one else can be in row 3 or column B, and no other character can be in the Stage.
- F3, F5, F6, F7, F8 and F9 have already been ruled out, so Ines can only be on F4.
Conclusion: Ines is the only person sharing the Lobby with the Ruby Brooch, which is on I1. She is the thief.