Sudoku Classic

The name of the game Sudoku Classic for Android speaks for itself. This Japan puzzle will come in handy for those who like spending their spare time profitably. The game is a square board consisting of 81 cells, i.e. 9 cells in each line and each column. Except for this the playing field is divided into 9 blocks 3x3 cells in size. The essence of the game is that you have to fill in the playing field with the numbers from 1 to 9 so that not a single number repeated itself neither in vertical nor horizontal lines.