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
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.

01 / The method
No sums and no blind guessing. Read the scene, test every alibi, and follow the consequences.

Each row and column holds exactly one person.

Use rooms, walls, directions and furniture.

The person alone with the victim is the culprit.
02 / Evidence register
The game records a chain of reasoning, not merely a finished arrangement.
A hint names the clue and explains the next deduction. It does not hand you the answer or solution.
Every case is checked for uniqueness before it reaches the case list.
Work through more than 100 investigations, plus a new daily challenge every day.
Play without ads, an account, or a network connection.
03 / Visual evidence
Choose a file, study the room plan, and request a real hint only when the trail goes cold.



04 / Questioning the rules
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.
Read every answer →06 / Final report