Sudoku daily
[Update daily]: Sudoku is the number puzzle. Although it is a number game, Sudoku requires no mathematical skills – just a keen grasp of logic and plenty of patience.
The rules are simple: You simply fill in all the squares in the grid so that each row, column and each of the 3×3 squares contains all the digits from 1 to 9 without repeats or omissions. It sounds a piece of cake, but…