Case 16: Murder Sudoku
Crime Logic Puzzle Mysteries
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
A murder, a floor plan, and a clue from every suspect. Put everyone where they stood — whoever shares the victim’s room did it.
A murder, a floor plan, and a clue from every suspect.
Put each suspect on the square where they stood: one to a row, one to a column. The victim was alone with the killer, so whoever shares their room did it. No guessing, no luck — every case has exactly one answer, and you can reach it by reasoning alone.
THE RULES FIT ON A CARD
• One suspect to every row and every column.
• "Beside" means left, right, above or below — never diagonal, never through a wall.
• Nobody stands on furniture. Tables, plants and boxes are solid; chairs, beds and carpets are somewhere to be.
• The victim was alone with the killer. Their room holds exactly two people.
80 CASES, EASIEST FIRST
From a 5×5 warm-up to 12×12 boards that take a whole evening. Bars, ferries, hospitals, film sets, a reading of the will. Every difficulty is measured from the steps it takes to solve, not guessed, so the case number is the ladder.
A NEW CAST EVERY CASE
Suspects are dealt fresh for each case — different faces, clothes, hats and habits — so you are never solving the same five people twice.
THE MONTHLY CASE
Once a month, one big 12×12 case and one attempt. Fastest times go on the ranking.
HINTS THAT TEACH
Stuck? A hint shows the next step of the deduction and why it follows — never just the answer.
FAIR ABOUT ADS
Every case is free, and ads pay for them. A hint plays a short ad first; leaving a case you have just solved plays one. An ad never plays before the reveal, and time spent on an ad never counts on your clock.
Turn every ad off with Case 16 Ad-Free: $1.99 a month, or $9.99 once for good. The monthly subscription is charged to your Apple Account and renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel it in Settings › Apple Account › Subscriptions.
No account, no sign-up, no email.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://case16.blankhexadecimal.com/privacy-policy
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Information
- Seller
- BLANK HEXADECIMAL SL
- Size
- 73 MB
- Category
- Puzzle
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later. - iPad
Requires iPadOS 16.4 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Infrequent
Cartoon or Fantasy Violence
Horror/Fear Themes
Alcohol, Tobacco, Drug Use or References
Contains
Advertising
- In-App Purchases
Yes
- Ad-Free, monthly $1.99
- Ad-Free, for good $9.99
- Copyright
- © 2026 BLANK HEXADECIMAL, S.L.