This is an all-round software, it can not only solve and generate Sudoku, but also create a Sudoku Library. Any time you meet a favorite puzzle, you can input it into the software for later play. Main functions: (1)Recognize sudoku from picture (2) Simple and beautiful UI and changeable theme. Use your favorite pictures as background, the app automatically take the main color as the theme color, every day is a fresh day. (3) Perfect Undo/Redo mechanism. even APP restart also restores the previous operation history. (4) Library system. Introduce your collection into the program, and you can start solving problems easily at any time. (5) High-quality automatic generator algorithm, guaranteeing the unique solution, truly random.