Sudoku Challenge

The rules of Sudoku are very straightforward: you have a board with the size 9х9, and you need to fill empty boxes with the figures in such a way that each line, each column and each 3х3 block contained all numbers from 1 to 9.

Features:

-Endless Sudoku grids to tease your brain with numbers!

-Leaderboard to track of your progress and performance compared to other players.

-Three difficulty levels with two modes.

-Hints and number check Help Option