Originally Posted by

**tsang** Hi everyone,I got this puzzle and but I cannot solve it,can anyone please help me?

For a $\displaystyle 3\times 3$ cube, it requires __6 cuts__ to cut it into 27 cubes.

Can the number of cuts be reduced if the cube __can be piled together__ after each cut?

If it can be done, then find the solution for a $\displaystyle 4\times 4$ cube and then give the general formula for a $\displaystyle n\times n$ cube.

Please help me,I found it is really not easy to visualising the situation.