Use correction fluid to white out all the squares on a Rubik's cube.
Write numbers 1 to 9 on each side with marker pen using following rules:
(1) Do not repeat any numeral on a single side;
(2) Make each side a unique ordering of the numerals.
Randomise the cube, i.e. mix it up.
Solve such that each side contains the digits 1 to 9.
Let me know how you get on.