Sudoku Puzzle Pro.

The most intuitive, polished, and enjoyable Sudoku game on the App Store! Completely FREE with an endless supply of Sudoku puzzles. Choose any level you like. Play easier levels to exercise your brain, or try expert levels to give your mind a real workout. Our Sudoku has some features that make the game easier for you: hints, auto-check, and duplicates highlight. You can use them or complete the challenge without help – it's up to you! What's more, in our Sudoku each puzzle has one solution. Includes: - Endless, Free Sudoku puzzles - 4 levels of difficulty: Simple, Medium, Hard, Master - Hints and Notes Train your brain with Sudoku anywhere, anytime!