With a 9 x 9 grid, this number puzzle is the biggest challenge from the Rubik's Cube. The empty fields must be filled so that the numbers from 1 to 9 appear only once in each row, in each column, and in each 3 x 3 block.

And the best part is that you don't need to be a number lover or a math genius to enjoy Sudoku. It features 5 difficulty levels. This unit consists of 5 identical individual titles.