Popular Sudoku game.

Rules of the game:
The playing field is a 9 × 9 square, divided into smaller squares with a side of 3 squares. The entire playing field consists of 81 cells. At the beginning of the game, they contain some numbers (from 1 to 9), called tips. In Sudoku, you are required to fill in empty cells with numbers from 1 to 9 so that in each row, in each column, and in each small 3 × 3 square, each number would appear only once.

Sudoku app supports 4 difficulty modes:
1. Easy - simple level.
2. Medium - the average level.
3. Hard - hard level.
4. Expert - super difficult level.

Sudoku also allows you to save and view your results.

Good luck with the game.