Challenge your mind with Sudoku Classic: Puzzle Guru! Enjoy challenging Sudoku puzzles free and offline, enhance your logic skills, and conquer daily challenges. Enjoy a user-friendly interface, various difficulty levels, and daily challenges and become a Sudoku master. Join millions of players worldwide, train your brain and experience the ultimate Sudoku adventure today! Classic Sudoku puzzle is a logic-based number game that requires you to fill a 9x9 grid with numbers from 1 to 9. The objec