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About game
Sudoku Zen is a calm and stylish number puzzle for both beginners and experienced players. Choose from six difficulty levels, solve a new daily puzzle, build a streak and earn medals for completed months. Use notes, undo moves, erase numbers or spend coins on hints when you get stuck. Track your best time and statistics, switch between visual themes and continue your progress with cloud saving after signing in. Complete the 9×9 grid without repeating numbers in any row, column or 3×3 block.
How to play
Choose a difficulty or open the daily puzzle. Select an empty cell, then press a number from 1 to 9. Each row, column and 3×3 block must contain every number only once. Use Notes to mark possible values, Erase to clear a cell and Undo to reverse the last move. You can use a hint for coins or enable auto notes. Three mistakes end the round, but you may continue using coins. Fill the entire grid correctly to complete the puzzle, earn coins and improve your best time.