When I was in school, Sudoku was a very popular number game that appeared in textbooks, magazines, newspapers, and various small mobile devices. Sudoku is not only a number game, but also a mathematical logic game, which can be used to exercise logical thinking ability. Sudoku has very simple game rules, but has very complex logical reasoning skills, so it can be easily introduced, but difficult to master. For solving some difficult problems, it will consume a lot of your time, and more importantly, you must have good logical thinking ability.

With the development of Sudoku games, there are more and more ways to play Sudoku, and the difficulty and fun have been greatly improved. The difficulty of some variants is more than one level higher than that of classic Sudoku. We hope that different types of Sudoku games can be played on mobile devices, and this work will try to achieve various modified Sudoku games. including but not limited to:

- Classic Sudoku
- X Sudoku
- Window Sudoku
- Percent Sudoku
- Pyramid Sudoku
- Bend X Sudoku
- Jigsaw Sudoku
- Killer Sudoku
- Ring Sudoku(Round Sudoku)


Sudoku basic rules:

1. The sudoku board is a nine palaces, and each palace is divided into nine small grids.
2. At the beginning of the game, a certain known number is given in the eighty-one grids.
3. Players need to fill in 1-9 in each grid, so that each number from 1-9 only appears once in each row, column and box.