Sudoku Mission: Number Game

Sudoku that respects your time and your intelligence. Buy it once, play forever - no adverts, no in-app purchases, no account, and no internet connection required. FIVE TIERS THAT MEAN SOMETHING Easy through Evil are not guesses. Every puzzle is solved by an engine that uses real human techniques - naked and hidden singles, locked candidates, pairs and triples, X-Wing, XY-Wing, Swordfish - and graded by what it actually takes a person to see. A short puzzle hinging on one X-Wing is not "easy" just because it is short. A DAILY CHALLENGE EVERYONE SHARES One board a day, identical for every player, ramping from Monday Easy to Sunday Evil. Build a streak, collect medals on the calendar, and compare your time against par. HINTS THAT TEACH Stuck? A hint explains the deduction - "R4C7 is the only cell in box 6 that can hold 8" - instead of just filling in the answer. You finish the puzzle having learned the pattern. CLIMB THE RANKS Bronze to Grandmaster. Your rating reflects recent form rather than hours logged, so the badge says how you are playing now. Points bank permanently, medals are awarded against a per-difficulty par time, and 18 achievements track the milestones. BUILT FOR PLAYING - Pencil marks with auto-fill and auto-clean - Unlimited undo and redo, with an erase and a pause - Optional three-mistake limit and instant wrong-digit feedback - Row, column, box and matching-digit highlighting - Games auto-save and resume, even if the app is closed mid-puzzle - Portrait and landscape, on iPhone and iPad - Light and dark themes that follow your system setting PRIVACY BY DESIGN No ads. No adverts. No in-app purchases. No account. No analytics. No network requests of any kind. Everything you play stays on your device - there is no server for it to talk to.