AI Extreme Logic Puzzle
Counts, islands and connection
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Start with a demanding puzzle, not a warm-up. Explore eight verified boards, learn with a visual demo, and test your ideas with reversible hypotheses, notes and undo.
Read the counts. Shape the islands. Connect the black cells.
A deliberate logic puzzle built around three interacting constraints.
EIGHT DEMANDING BOARDS
Choose any of eight 8×8 puzzles, including a challenging first stage. An independent solver has verified that every included puzzle has exactly one black-and-white solution. Perceived difficulty and solving time vary by player.
LEARN BY WATCHING AND TRYING
A separate 4×4 visual walkthrough demonstrates row and column counts, island area, island separation and black-cell connectivity. Finish by filling two practice cells yourself. The demo never changes your main-game progress.
EXPLORE A HYPOTHESIS
Keep your original board and notes while testing an idea. Discard returns to the original state; committing groups the hypothesis into one undoable move. Use question-mark notes, up to 100 undo steps and an enlarged board.
THINK AT YOUR OWN PACE
There is no time limit. Progress and hypotheses save automatically on your device. Check flags immediate contradictions; it does not guarantee that an arbitrary partial board can still be solved. Revealing an answer requires confirmation and is recorded separately from an independent clear.
FREE, WITHOUT ADS OR PURCHASES
No account required. Gameplay works offline. Japanese and English interfaces, haptic feedback and reduced-motion options are included.
AI in the title refers to design assistance during development. The app does not send your input to an AI service or generate new puzzles while you play. All eight puzzles are built in. There is no cross-device synchronization or transfer service.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Koji Tamatsu, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Koji Tamatsu
- Size
- 826.4 KB
- Category
- Puzzle
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- Copyright
- © 2026 KO-JI APPS