Understanding Crazy 3x3x3 Neptune
First, take a look at the diagram below.
You'll see that Neptune is listed as "80", and on the picture, the red, white and green faces are different to the other 3 faces. The "0" means that when you turn the red, white and green faces, the center parts do not turn with the face. When you turn the other faces, the center parts do move. So they're "1" faces.
[My understanding of why the Neptune has the specification "80" is because when you look at the position of the red, white and green faces on the diagram above, and remember that they are all "0" faces, there appear to be two "0" faces on top of one another, as well as the single "0" face to the right. This kind of makes an "8" next to a "0" if you look really carefully.]
But yours may have different colours as the "0" faces. It'll definitely have three faces in the same relative positions where the centers turn with the face, but they might be, for example, green, blue and red. (Apparently the factory just puts them together with the correct face specification regardless of colour.) It's a good idea to make yours the same colour specifications as the original. This site will be using the correct colours. This video will show you how (it's using the Earth cube, but the procedure is identical).
The Basic Plot
- Solve inner edges
- Solve outer edges
- Solve outer corners
- Solve inner corners (circle corners)
Step 1: Inner Edges
Solve the inner edges as follows:
- Solve white and green inner edges
- Solve red inner edges
- Solve all other inner edges
Step 2: Outer Edges
A useful thing to know is that when you do an edge piece series, and only turn the red, green and white faces, the inner edges are unmoved.
This means that as long as we do an edge piece series turning only the red, green and white faces, we can move around our outer edges as we like. Proceed like this:
1. Solve all the blue, orange and yellow pieces first by bringing the "visitor" piece onto the red, green and white faces, and then carrying out an EPS. Then return it to its home.
2. Solve the next few pieces in the same way.
3. If you solve the pieces from the outside in, you'll find that the last three pieces will automatically be positioned around the corner common to the white, green and red faces. This means you can carry out the final corner piece series without any setup moves.
4. If you need to swap two pieces, use a "series of replacements". (This is Marshall's term for dealing with the need to swap two edges on a standard Rubik's cube.) Make sure that you have a "1" face (red, orange, blue or yellow) on the right and a "0" face (white or green) on top. Then re-solve the remaining edges.
Step 3: Solve Outer Corners
Do this exactly as for a standard cube, using the corner piece series. You won't mess up any of the edge pieces you've already done.
Step 4: Solve Inner Corners
To cycle inner corners, hold the cube with the "0" faces at up/right/back. It makes no difference whether white is up and green is right, or perhaps green is up and red is white, as long as all three "0" faces are up/right/back.
Here's what to do:
- Corner piece series first turn of upper face clockwise
- Turn the whole cube clockwise about the vertical axis
- Corner piece series first turn of upper face anticlockwise
Using the above, we cycle our inner corners pieces (potentially 24 of them) until all are solved. Initially it's quick and easy. It's often possible to cycle 2 at a time, and occasionally, all 3. As there are less pieces to cycle, it becomes harder. When you're down to the last 5 or so, it can often be difficult to setup the pieces and keep track of what you did. The videos below will give you a good idea of how to do it.
And a final video showing the endgame.
And that's it. Your Crazy 3x3x3 Neptune is now solved. I trust this site has been helpful. If you have any questions or want some clarifications, please use the comments to do so.