Sudoku Challenge (air.com.maysalward.SudokuChallenge) on Google Play
The rules of Sudoku are very easy: 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 figures 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.-3 difficulty levels with 2 modes.-Hints and number check Help Option