Zen Sudoku - classic soduku is an iPhone application that offers a collection of 750 editor's choice puzzles for each difficulty level. With the goal of filling a 9x9 grid with numbers from 1 to 9, Sudoku is a popular and challenging puzzle game that tests your logic skills.

This app provides several features to enhance your gameplay experience. It offers hints to help you when you get stuck, and it has an auto-check feature that highlights mistakes and duplicates, making it easier to find errors. Additionally, the relay challenge mode presents editor's choice puzzles that give your mind a real workout.

Sudoku is not only a fun game but also a great brain exercise. By playing Sudoku daily, you can improve your concentration and overall brain power.

Enjoy the peace of mind and sharpen your logical thinking with Zen Sudoku - classic soduku!