The fastest way to know how hard your puzzle is, or if it’s valid, is to write a solver that knows all the strategies that can try it. Most people don’t know this but Sudoku puzzles are actually generated by programatic Sudoku solvers. Our hardest puzzles require wild techniques like “XYZ Wings”, “Hidden Quadrouples”, “Jellyfish”, and “Swordfish”. We spent weeks figuring out how to generate intricate and complex puzzles you won’t find in other Sudoku apps. We wrote a puzzle generator from scratch to create over 70,000 of the highest quality puzzles you’ll see anywhere. We put everything we could into making the best digital Sudoku game ever released: Import your own puzzles from elsewhere in Custom mode (and share them with friends!) 3 Daily puzzle modes that get harder throughout the week + global leaderboards 3 standard modes: Good, Arcade, and Eternal AI powered hint support to continuously boost your skills Over 70,000 of the highest quality puzzles you’ll see anywhere Whether you’ve never tried Sudoku, or you play every day, Good Sudoku’s elegant layout, intelligent hint system, and busywork reducing tweaks will help you play better and have more fun.

Good Sudoku turns your iOS device into an AI powered Sudoku genius whose only mission is to help you learn and love this classic game.

Free for apple instal Sudoku+ HD