RULES AND FEATURES
Sudoku has only one rule. It is necessary to fill the free cells with digits from 1 to 9 so that every row, every column and every 3x3 small square each digit would meet only once. The game trains attention, because without it, you are unlikely to solve this problem.
You can play the game SUDOKU online 24 hours a day for free. It is no need to download and install it on your computer, and it is also not required you to be the registered user. Just ckick and enjoy. See also a set of related games below on that you might be interested to look.