3.3.3 Cube Questions
====================
Is there a dissection of the 3-cube in 7 different pieces
with a unique solution? (Martin Gardner (Polycubes p.40))
solution:
          1   1 1     1     1       1     1
1 1 1   1 1   1 1   1 1 1   1 2   2 1   1 1 1
                                          1        has a unique solution