This game is a classic "Sudoku"! Peculiar properties: 1. The game supports two languages: Russian and English; 2. The game has 5 levels of difficulty that will allow you to adjust the puzzle for yourself; 3. Each time you start a new game and select the level of difficulty, there is a procedural generation of " Sudoku"; 4. For cells that need to pick up a value, you can write comments that allow you to mark the numbers that are likely to be correct; 5. The color highlights the cells in which you can write values; 6. The solution verification algorithm is designed in such a way that any correct solution will be counted.