Description:This is a two in one game of Sudoku! Besides just the normal Sudoku it includes Soku as well. Soku is a speed version of Sudoku, an adjustment to the rules.Sudoku states that you must place digits 1 to 9 in all fields in such a way that no digit is repeated in any 3x3 blocks, row or column. In Soku every row, column or 3x3 boxes contains the same set of numbers.So if you want to strain your brain a little more than usual play Sudoku-Soku. Have fun!