On an N×N grid split into N colors, place exactly one cat in each color region, each row, and each column. Two cats may never touch — not even diagonally.
Play now →Features
- Colorblind-friendly by default — 10 dot-dithering patterns, Okabe-Ito palette, and borders of varying thickness let every player use the same screen without a separate mode.
- Offline puzzle generator — a Dart CLI pre-computes uniqueness, difficulty, and smooth zigzag region boundaries so the app ships quality-checked levels in a JSON bundle.
- Single endless progression — no mode select. Keep solving the next level, and the first time a new technique appears a short overlay explains it.
- Korean/English from day one —
/ko/and/en/served side by side with properhreflang.
Who it's for
Fans of Sudoku, LinkedIn Queens, and Star Battle style logic puzzles. Anyone who wants a short, login-free session during a break. Players who found color-only puzzles hard to read because of color vision deficiency.
Get started
No install required. Hit Play now to start the first level. For the full ruleset, see Rules. For the design background, see About. To study individual tactics, see Techniques.