AI Extreme Logic Puzzle

About

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.