Suzzku

Suzzku is a calm, focused Sudoku. No account, no sign-up — open it and play. ONE CELL AT A TIME • Four levels: Easy, Normal, Hard, Expert • Every puzzle is verified to have exactly one solution • Pencil notes for candidates — cleared automatically when you place a number • Undo, erase, and 3 hints per game • 3 mistakes allowed, then choose to continue or start fresh • Pause hides the board and stops the clock ONE PUZZLE A DAY, THE SAME FOR EVERYONE • A new daily puzzle, identical on every device around the world • Difficulty follows the weekday — easy start of the week, Expert on Saturday • Solved days fill in your calendar and build a streak CHALLENGE A FRIEND • Finish a game and send a challenge code • Your friend races on the exact same puzzle — no server, no login YOUR RECORDS STAY WITH YOU • Best times, clears, and win streaks per level, saved on this device • Progress auto-saves; pick up right where you left off • Light and dark themes, following your system or set by hand • 16 languages Suzzku is free and supported by ads. Watch an optional rewarded ad for an extra hint.