Cubo di Coppo

The Coppo Cube, the puzzle which, like Sudoku, is inspired by the Latin square. In this curious and exciting game, mathematics has little to do: it is based on logic.
The game, in fact, relates twelve numbers to each other without actually handling the arithmetic properties, but taking into account their position on the three matrices. The challenge of this game is on three dimensions and is more complex and challenging than the traditional Sudoku.