Formula CubeTwist 3x3x3 Puzzle Speed Sudoku Number Magic Cube Educational Puzzle Toy - Black .100% brand new and high quality skewb Magic Cube .Special designed,Sudoku on a Puzzle Cube, smooth touch .Solve it by making each side the number 1-9 in order .Activate your imagination and creativity .Enriches the child's imagination and Intelligence .Rotate the magic cube with your friends and enjoy the happiness