Four Winds - Uorurojikku – 1.1

You probably know Sudoku. Who doesn't? But do you know other Japanese puzzle game - Uorurojikku? It's Sudoku's younger brother. Very addictive, very challenging and giving a lot of fun. It is the only Uorurojikku app in the Google Play Store. In English it's called Four Wind, which stands for four directions, in which the color can smudged.