Award-winning Sudoku with no adverts, six difficulty levels, advanced hints and powerful tools. Enter, solve and analyse any Sudoku—even puzzles from newspapers.
Enjoy classic Sudoku without adverts, from relaxing beginner puzzles to exceptionally difficult challenges created for experienced players.
Choose a quick, simple game or put your logic skills to the ultimate test. With six difficulty levels, powerful solving tools and virtually unlimited puzzles, there is always a new Sudoku waiting for you.
Play one of the built-in puzzles or enter any 9x9 Sudoku from a newspaper, magazine or elsewhere. Solve it yourself with pencil-style notes, ask for a helpful hint, or use the Sudoku solver and analysis tools to identify mistakes and discover your next move.
PERFECT FOR EVERY PLAYER
• Six difficulty levels: Simple, Easy, Medium, Hard, Very Hard and handcrafted Sudoku Master
• Easy Sudoku puzzles for beginners learning the rules
• Challenging logic puzzles for advanced and expert players
• Virtually unlimited, uniquely generated Sudoku puzzles
• Every built-in puzzle has exactly one valid solution
• Complete a Sudoku every day and watch your solving improve
• Play at your own pace, anytime and anywhere
POWERFUL SUDOKU TOOLS
• Create, solve and analyse Sudoku puzzles
• Enter and play puzzles from newspapers or magazines
• Add pencil-style notes for possible numbers
• Use the Ball of String tool to track complex solving paths
• Highlight mistakes and conflicting numbers
• Automatically fill possible candidates
• Colour-code cells and notes using a full palette
• Choose from several types of helpful hints
• Use Suggest a Technique to find your next logical move
• Get help with advanced strategies including Triplets, Quads, X-Wings, Swordfish and Jellyfish
MORE WAYS TO PLAY
• Picture Sudoku
• Grid Transform
• A rewarding scoring system with the ultimate goal of becoming a Sudoku Master
• Game Center achievements and leaderboards
• Designed and refined with feedback from more than 200 Sudoku players
Sudoku is an ideal daily brain exercise: relaxing when you want to unwind, yet demanding enough to give your logic, concentration and problem-solving skills a serious workout.
Enjoy the familiar feel of pencil-and-paper Sudoku combined with the convenience and advanced tools of your device.
Can you progress from your first Easy puzzle to the handcrafted Sudoku Master levels?
PROFESSIONAL REVIEWS
“Mastersoft Sudoku comes with an exceptional range of functions to help you play.”
— Gadgetorama
“Quite frankly, the best version of this game I have seen.”
— PDA247
“Its intuitive interface, extensive options and picture-style puzzles make it one of the best Sudoku games available.”
— PPCLife
AWARDS
• Winner — Handster Best Software Awards, 2008
• Winner — Smartphone Magazine Awards, 2008
• Winner — Smartphone Magazine Awards, 2007
• Winner — HP Choice Awards, 2005
• Number one in the HP chart for more than a year
End User Licence Agreement:
[http://www.TheChessSolitaireSudokuFactory.com/eula.htm](http://www.TheChessSolitaireSudokuFactory.com/eula.htm)
Privacy Policy:
[http://www.TheChessSolitaireSudokuFactory.com/privacy.htm](http://www.TheChessSolitaireSudokuFactory.com/privacy.htm)
Easy to use, fun to play, works fine on me iPhone 6plus. It would be nice if there were more difficulty levels. Plus a reset to the first error placed on the board. Any error means the game cannot be finished. This function keeps a time log of moves as soon as an incorrect move is placed on the board. Then when the board is full pop up allows the player to removes all plays since the error, including the error or highlighting the error. This allows the player to finish the game and get a score. Lots of options for colors and number types. What is missing is an automatic all possible guesses function that completes all the legal guesses for any empty square.
Unhappy with the $
MJFlutterby
“Love this game. Play it all the time!” That was my original review (with 5 stars) years ago when I got the game. It provided simple games - very hard games, ad free, with an option to purchase for even harder games and extras. With an update, it required purchase for the very hard games, but still gave you simple - hard. Ads were included. Today when I went to play it, it only gave me simple games. I have to buy the rest. No thank you. I have been playing and promoting this game for years. If I had wanted to spend money on it, I would have when I got it. I will be sorry to see it go, but bye-bye. Like any relationship that turns to take advantage of you or require things of you that you don’t want to give, it is time to go. You cannot lure me in, then change the rules and expect me to stay. I am very disappointed, but I will get over it.
Paid for Pro but doesn’t register I paid for it
FelineFemale
I even deleted and re-downloaded and now lost my streaks too. I tried to restore my purchase and it just closes the game. I paid for a yearly subscription to use all features and evidently wasted my money because I don’t have all the features and it still says upgrade to pro. Please fix or I will seek refund from Apple. Thanks. Otherwise I like this game although I don’t like subscriptions. I prefer to pay for a game and just have it.
Developer Response
Hello, is the latest version okay?
hints vs techniques
Jean Voldman
What you call a hint is in fact a known technique to solve a sudoku puzzle. I don't understand why one is penalized for using such. You keep resetting me to novice and i don't understand why. You claim your puzzles to be symmetric but they are not.Your coloring does not work and thus no coloring scheme can be used.The only technique you seem to allow is "let's try this, and if it does nor work go back to try the other value". Sudoku is not really a guessing game.There is no possibility of scaling the size of the candidates numbers. There are 729 candidate numbers. You penalize those who choose to use "calculate the candidates" by 25%.When you will be 78 years old, if you reach that age, this will look to you more like a vision acuity test than anything having to do with solving sudoku.
Developer Response
Hello, sorry it doesn't suit you. We're not sure why you couldn't get coloring to work. No guessing is required in our free Sudoku. There is an option to turn on symmetry, but you'd probably be better off looking for a different version of the game that you like better.
We have removed all advertising.
Version 4.62
The developer, Mastersoft, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Diagnostics
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
