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Initial release.
Calm, modern Sudoku with daily challenges.
Sudoku Zen: Logic Puzzle is a classic 9x9 sudoku game with a calm, modern design. Sharpen your mind with number puzzles ranging from quick beginner grids to expert-level logic challenges — fully playable offline. FIVE DIFFICULTY LEVELS Choose Beginner, Easy, Medium, Hard, or Expert. Every puzzle is generated with a guaranteed unique solution, so each sudoku can always be solved by pure logic — no guessing required. Perfect for both first-time players and experienced solvers. DAILY CHALLENGE Solve a new daily sudoku every day and build your streak. Daily puzzles work offline, and the calendar lets you go back and finish days you missed. SMART SOLVING TOOLS • Pencil marks (notes) with automatic cleanup when a number is placed • Unlimited undo and a quick eraser • 5 hints per game • Number pad shows how many of each digit remain • Row, column, box, and same-number highlighting PLAY YOUR WAY Make the game yours in settings: dark, light, or automatic theme, sound and vibration feedback, mistake limit on or off, auto-check for wrong entries, duplicate highlighting, and timer display. Pause anytime, and auto-save lets you close the app and continue your game right where you left off. TRACK YOUR PROGRESS Detailed statistics for every difficulty: games completed, win rate, best and average solve times, win streaks, and perfect wins. Beat your records and earn a new best-time badge on the results screen. RELAXING, DISTRACTION-FREE DESIGN A minimalist zen interface with soothing colors keeps you focused on the puzzle. New to sudoku? A short built-in tutorial teaches the rules in minutes. Whether you want a relaxing brain workout with your morning coffee or a serious logic challenge, Sudoku Zen is a clean, modern take on the classic number puzzle game. Download now and train your brain every day.