This is a classic version of Sudoku, a game with numbers. You must place numbers on different lines and each line must have unique numbers. The numbers are between 1 and 9.
The game features 2 difficulty levels:
It shows hints and a help menu where you can read the rules about how to play.
How to play
- you have digits from 1 – 9
- each column and each row must contain all digits
- also, the 3×3 squares (see image) must contain all digits from 1 to 9
Read more on Wikipedia.