You must not be strange to the world-famous sudoku game. Many people cannot stop playing this simple but also complicated number game as soon as they started it. Sudoku game is always a good option for you either when you want to challenge your intelligence limit or when you just want to kill time. While this software is aimed to bring you an extra-fresh experience. Not only a puzzle generator and solver iSudoku is also a great tutor to help you quickly master sudoku skills. It has the following features: 1. The superb and unique hint system helps you learn various sudoku techniques rather than giving you answers only. 2. You can generate and solve unlimited numbers of puzzles in 5 different levels of difficulties. 3. You are able to manage the puzzle difficulty by adding/removing solving techniques to/from a given difficulty level. 4. Powerful undo and redo features enable you to review every move you have made. 5. Various input methods including mouse input keyboard input dialer pad input and mouse wheel support can always satisfy all your needs. 6. Shortcut keys are customizable to help you operate as quickly as possible. 7. Four different text formats are supported for puzzle opening and saving. This helps you exchange puzzles with others easily. 8. You can design a puzzle of your own. 9. Customizable colors and themes settings give you a better user interface. 10.Puzzles can be copied into and pasted from clipboard in 4 different text formats. 11.You can also copy and save the original or current puzzle as an image. 12.A simple print mechanism can suit your basic need to have a hard copy of sudoku puzzles. 13.Powerful help file provides you with every detailed information you want to know about. 14.It supports multiple interface languages: English Chinese Simplified and Chinese Traditional. So do not miss it!!!