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Case 56: who took the Giant Pearl?
A routine inventory at the aquarium has revealed that the Giant Pearl, officially listed as being in the Diving Room, is nowhere to be found. The insurance company won't pay a cent without a named culprit, so the pressure to solve this is real. Help the police unmask the thief.
The board
- 1Gift Shop
- 2Restrooms
- 3Lobby
- 4Diving Room
- 5Laboratory
- 6Tank Room
- 7Café
- 8Office
- 9Storage Room
- 10Children's Room
- 11Terrace
- 12Main Aquarium
- 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
- SSandra
She's 3 rows away from the Children's Room. - FFarah
She's 3 rows away from the Lobby. - EElena
She's 5 rows away from the Restrooms. - CChidi
He's in column J, and he's not in the Office. - IInes
She's 6 rows away from the Diving Room. - HHugo
He's 1 row away from the Gift Shop and 7 columns away from the Restrooms. - YYusuf
He's 10 columns away from the Storage Room. - GGiant Pearl (stolen item)
It's 2 columns away from the Lobby.
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
- Sandra's clue: She's 3 rows away from the Children's Room. It leaves a single cell: B7.
- Farah's clue: She's 3 rows away from the Lobby. 2 cells remain possible: C6 and B7.
- Elena's clue: She's 5 rows away from the Restrooms. 2 cells remain possible: L1 and K2.
- Chidi's clue: He's in column J, and he's not in the Office. 6 cells remain possible: J1, J2, J3, J4, J5 and J6.
- Ines's clue: She's 6 rows away from the Diving Room. 4 cells remain possible: E3, G3, D4 and H4.
- Hugo's clue: He's 1 row away from the Gift Shop and 7 columns away from the Restrooms. 2 cells remain possible: E6 and E9.
- Yusuf's clue: He's 10 columns away from the Storage Room. It leaves a single cell: K11.
- The stolen item's clue: It's 2 columns away from the Lobby. 4 cells remain possible: E1, E2, E3 and D4.
- Sandra can only be on B7. No one else can be in row 7 or column B, and no other character can be in the Gift Shop.
- B7 has already been ruled out, so Farah can only be on C6. No one else can be in row 6 or column C, and no other character can be in the Terrace.
- E6 has already been ruled out, so Hugo can only be on E9. No one else can be in row 9 or column E, and no other character can be in the Diving Room.
- Yusuf can only be on K11. No one else can be in row 11 or column K, and no other character can be in the Office.
- K2 has already been ruled out, so Elena can only be on L1. No one else can be in row 1 or column L, and no other character can be in the Main Aquarium.
- E1, E2 and E3 have already been ruled out, so the Giant Pearl can only be on D4. No one else can be in row 4 or column D.
- E3, D4 and H4 have already been ruled out, so Ines can only be on G3. No one else can be in row 3 or column G, and no other character can be in the Laboratory.
- J1, J2, J3, J4 and J6 have already been ruled out, so Chidi can only be on J5.
Conclusion: Farah is the only person sharing the Terrace with the Giant Pearl, which is on D4. She is the thief.