Sudoku for the hardest This Sudoku is not for wimps. If you prefer easy levels, 25 or more defaults, please pick another app. This version creates only the most extreme Sudoku’s possible, in most cases with only 17 defaults. This is the lowest number for a still unambiguous solution. Other apps talk about extreme levels, but only here you’ll find the real challenge. 2 levels exist: 1. Extreme, here you get only levels with 17 defaults, hard enough for most players. If you ever find another app with 17-Sudokus, they tell you this would be the maximum of complexity. But here it’s only the entry level! 2. More than extreme, if you feel the level above is still too easy for you, than try this one. Here you get the most complicated Sudokus possible. No easy strategy you will bring any progress, even the candidates and highlighting aren't useful at first view. Here the real masters are challenged; even the most solver apps don’t handle these Even when you don’t believe, there is a unique solution, and in case, the app helps you to find it. Top-Features - Only 2 Levels, extreme and beyond extreme! - The tournament mode. Solve a Sudoku and enter the highscore. In your local list and global to compare with all other players - Use of candidates, if it’s too hard for you without - Automatic fading out of obviously wrong candidates - With candidates, best overview for the game - Optionally highlight all the same numbers that you picked - Show and correct errors - All positions and the course of the gameplay stay if you leave the app, the time is stopped too. So a restart brings you just where you left. Just as it should be - Open the menu with a simple slide from the left to the middle - No music, no sounds, no animations, no needless graphics. This is Sudoku, does anyone need this? I would be happy to get new proposals or improvements and will try to implement them into the app. If you like my app, please write a nice comment. Then I still wish much fun by solving new riddles again and again.