Sudoku

Master Sudoku puzzles with AI Factory's award-winning brain training game — the essential download for logic enthusiasts who want to sharpen their minds anywhere, anytime.

With 2,500 expertly crafted puzzles spanning five difficulty levels — from beginner-friendly easy challenges to mind-bending extreme brain teasers — you'll never run out of fresh number-placement problems to solve. Whether you're a casual player or a serious Sudoku solver, there's always a new puzzle waiting to test your logical reasoning and concentration skills.

Play your way with flexible note input modes designed to match your preferred solving strategy. Enable pre-fill notes to speed up your workflow, or activate auto-clear notes to keep your board uncluttered as you progress. When you need support, optional hints and undo moves guide you through tougher puzzles, while board aids help you spot patterns and possibilities.

Customize your experience with four different fonts and symbol sets, plus three distinct board designs to keep gameplay fresh and visually engaging. The smooth, responsive interface works beautifully on both phones and tablets, adapting seamlessly to your device.

Track your improvement over time with built-in statistics — monitor your fastest completion times, calculate averages, and watch your completion percentage grow across each difficulty level. Recognized as a Top Developer in 2011, 2012, 2013, and 2015, AI Factory delivers the same quality gameplay and graphics found throughout their acclaimed app library.

Download this free version and transform your commute, break time, or relaxation moments into engaging mental workouts. Sudoku has never been more accessible or rewarding.