There are two Hyper Sudoku 3D puzzles (Rules of Sudoku 3D). Each puzzle is made of two 6x6x6 cubes then you must use numbers from 1 to 12. The first one has rectangular regionc and the second has irregular regions. Just to remind that a row or column has 12 cells and spans on two faces on a cube but when two cubes are touching, like in these cases, a supplementary row or column is created when the two faces from two different cubes are meeting.