Real hints
A hint names the clue and explains the next deduction. It does not hand you the answer or solution.
Case file № 001 / iPhone
Solve the case.
One clue per suspect.
Detective Sudoku combines spatial logic with a murder mystery. Place every suspect, make every truthful clue fit, and let the completed room reveal the culprit.
- Over 100 levels + a daily challenge
- Real, explained hints
- No ads or account
Case 001
Petals at Dusk
Opening the case file…
01 / The method
Three facts.
One culprit.
No sums and no blind guessing. Read the scene, test every alibi, and follow the consequences.
- 01
Place the suspects
Each row and column holds exactly one person.
- 02
Make every clue true
Use rooms, walls, directions and furniture.
- 03
Name the murderer
The person alone with the victim is the culprit.
02 / Evidence register
Everything you need
to close the case.
The game records a chain of reasoning, not merely a finished arrangement.
Explained
Exactly one solution
Every case is checked for uniqueness before it reaches the case list.
Over 100 levels
Work through more than 100 investigations, plus a new daily challenge every day.
Offline by design
Play without ads, an account, or a network connection.
03 / Visual evidence
Reconstruct
the scene.
Choose a file, study the room plan, and request a real hint only when the trail goes cold.
04 / Questioning the rules
Do I ever need to guess?
No. Each case has one verified solution and a logical path to reach it. When you are stuck, Detective Sudoku explains the next valid deduction instead of filling a position for you.
Is Detective Sudoku like killer sudoku?
It shares the one-per-row-and-column discipline of sudoku, but replaces arithmetic cages with truthful suspect clues, rooms and a murder mystery.
Does every puzzle have exactly one solution?
Yes. Every generated case is checked by a solver that searches for a second solution and rejects the case if one exists.
Is Detective Sudoku free and are there ads?
The download is free, with no ads or accounts. Optional consumable packs add hints and reveals; the cases themselves remain fully playable without a purchase.
Does it work offline?
Yes. Cases, progress and hints all work on the device without a network connection.
What does beside mean?
Beside means orthogonally adjacent—north, south, east or west—in the same room. Diagonals do not count, and a wall breaks adjacency.
How do hints work?
A hint replays a genuine solver deduction. It identifies the clue and explains which placement or elimination follows from it.
Can two suspects share a room?
Yes. Rooms can contain several suspects, but each row and column still contains exactly one suspect.
06 / Final report
Over 100 levels.
A new challenge every day.
- Status
- Available on the App Store
- Platform
- iPhone, iOS 17+
- Languages
- 23
- Account
- Not required