The classic Sudoku game is one of the best-known logic puzzles. It is a grid game where you have to place numbers from 1 to 9 in a 9x9 grid, without repeating any numbers within the same row, column, or block. The objective is to find and place all the numbers from 1 to 9 in the grid in order without repeating any numbers within the same row, column, or block. This puzzle is also known as a Sudoku game, Sudoku 9x9, or simply Sudoku.

The difficulty of the Sudoku game depends on how you want to play it. There are four levels of difficulty: easy, medium, hard, and very hard. The harder the difficulty level, the more difficult the game is to solve.

The game is extremely easy to play. All you have to do is to place the numbers from 1 to 9 in a grid. You don't have to enter any information. Just enter the number you want to place in the grid, and the app will do all the calculations for you.

When you have placed all the numbers, you can save your game and share it with your friends. You can also save it to your device and you can play it anytime you want.