# Rubik cube : Generization, Solution, Program

```Coming soon:
* Solution for 3x3x3 : Well-known solution and corners-then-edges solution.
* My solutions for 4x4x4, 5x5x5, 2x2x2 and nxnxn.
* My program : nxnxn and nxmxp with solver of nxnxn and 1xnxm, on DOS.
* Some group theory for solving special problem--switching in last 2
edges of 4x4x4 and upper.

I can solve it within 1 minute, I mean 40-90 seconds.
Moreover, I can play 4x4x4 the Rubik's revenge, 4-9 minutes, or any bigger
Rubik cube!

My solution for 3x3x3 cube is very well known. It has 3 steps, complete
first face with its boundary, fill the middle row and then complete the
last row. Almost people say that the CORNERS-THEN-EDGES solution is the
best.

The solution for 4x4x4 and nxnxn cube is very complicate. There is some
switching between the last 2 noncentral edges. As a mathematics student,
I solve this problem by simple group theory.

I have designed 5x5x5 independently and finished the first prototype in
the end of 1989. No one can make the regular 7x7x7 or bigger, unless its
rows are not equal.

rec.puzzles