Classic sudoku for beginners and advanced players. whether you'd like to relax or keep your mind active – pass time in a pleasant way! get a small stimulating break or clear your head with sudoku. take your favorite game with you wherever you go. playing sudoku on mobile is as good as with a pencil and paper. choose any level you like. play easier levels to challenge 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. get an amazing sudoku experience: · complete daily challenges and get unique trophies · challenge yourself figuring out your mistakes, or enable auto-check to see your mistakes as you go · make notes to keep track of possible numbers. each time you fill in a cell, notes are automatically updated! · choose one of three appearances to play sudoku with more comfort, even in the dark! · highlight duplicates to avoid repeating numbers in a row, column and block · hints can guide you through the points when you are stuck · express yourself with funny ninja stickers for imessage! challenge your brain with sudoku anywhere, anytime!