## Rubik's Revenge

### I. Solve the Top Centers

I am not going to decribe how to do this, as this should be intuitive and easy enough for anyone to do. Besides, the enormous amount of mind-boggling combinations would cost me many MEGS in GIF files. You can arbitrarily decide what the top side is, and which color to use. After that, the top side stays on top for the remainder of the solution.

### Notation:

There are twelve layers in Rubik's Revenge, but we only need to concern ourselves with six of them; the four vertical slices (Left, M, N and Right), the bottom layer (B) and the front side (F).

• L+ ...move the LEFT slice UP (1/4 turn)
• L- ...move the LEFT slice DOWN (1/4 turn)
• M+ ...move the MIDDLE-LEFT slice UP (1/4 turn)
• M- ...move the MIDDLE-LEFT slice DOWN (1/4 turn)
• N+ ...move the NEXT-to-the-RIGHT slice UP (1/4 turn)
• N- ...move the NEXT-to-the-RIGHT slice DOWN (1/4 turn)
• R+ ...move the RIGHT slice UP (1/4 turn)
• R- ...move the RIGHT slice DOWN (1/4 turn)
• [MN]+ ...move both (vertical) MIDDLE slices UP (1/4 turn)
• [MN]- ...move both (vertical) MIDDLE slices DOWN (1/4 turn)
• B+ ...move the BOTTOM layer RIGHT (1/4 turn)
• B2 ...move the BOTTOM layer HALF-WAY AROUND (1/2 turn)
• B- ...move the BOTTOM layer LEFT (1/4 turn)
• F+ ...move the FRONT side CLOCKWISE (1/4 turn)
• F2 ...move the FRONT side HALF-WAY AROUND (1/2 turn)
• F- ...move the FRONT side COUNTER-CLOCKWISE (1/4 turn)

NEXT: Solve the Top Corners...

#### @ Notation / Top Centers@ Top Corners@ Top Edges@ Middle Edges@ Bottom Corners@ Bottom Edges@ Middle CentersReturn to Mathematica

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