Make some r/r' & U/F/B/D moves to form 2 adjacent red pieces. It is best to rotate (flip) the cube so the solved center blocks (yellow & white) will be on the R & L faces. The 3rd center block: we can choose any of the remaining four colors to be the third block to solve. If the 3 white pieces on top, or the piece on the front face, are positioned differently than in the example, all you have to do is just some U / F turns to adjust them like in the image and solve. The only difference is that we have to make only single F turn, because one white piece was already "inside" the elevator. Same idea is implemented here: We'll use the elevator idea as well. That way we are able to position pieces while preserving already solved pieces. It's just like an " elevator" move, we bring down the "elevator" toward the pieces we want to reposition, "upload" the pieces into the "elevator", and elevating them upwards into the solved position. This is an important idea in understanding the 4x4 solution. The white pieces are now correctly positioned on the top face, and all yellow pieces on the bottom remained unharmed.
Now we'll finally reverse the r' move by doing an r move. (There are 2 yellow pieces on the back face at the moment, which will go back into their solved position in the next move). Therefore, we make an r' move and take down the non-white center pieces on top into the F face, then switch them with the 2 white pieces, by doing F2. The way to "upload" a center piece from a side face (F / B / R / L) into the Upper face is using the following moves:Įxample: uploading 2 white center pieces from the F face (same for all faces).Įxplanation: since we have to preserve the center pieces at the bottom, just doing an r / l move is not enough. Since the only pieces to preserve are the bottom & top centers, you can freely turn: F / B / R / L layers. The way to solve the white center block is by repositioning the white center pieces, one by one (or in pairs), into the top face (without harming the solved center block on bottom of course). )įlip the cube upside down, so the yellow center block will be on bottom. The 2nd center block: The second center block to solve needs to be the opposite in color to the previous we've just solved: Since we'd just solve the yellow center block, now we should solve the white center block (This applies only to original color scheme cubes! Where yellow is in opposite to white, red to orange, and blue to green. Just take some time to practice the movements of the 4x4 cube, and you will shortly master the ability to create center blocks intuitively. I kept the instructions short for this part, as it's an intuitive part. If the yellow piece on the front face were on a different position in the front face (out of the 4 possible positions), you could just make some F turns to adjust it. (In the image: example of a paired red-blue edge block)Įxplanation: by doing an r' move you will bring down the upper-right yellow center piece on the top face into the front face (now it will adjacently match the center piece on front face), then an F move to align both pieces on the right side of the front face, and finally an r move to bring them both upwards into the top face, and form a complete yellow center block. For 2 identical edge pieces paired-up together we call an edge block. In the 2nd step we are going to pair them up together. Multiple edge pieces: every edge piece in the 4x4 cube has an identical edge piece around the cube, meaning there are 2 edge pieces of every type (e.g. (In the image: example of a solved red center block) For 4 center pieces solved together we call a center block. As mentioned, there are 4 center pieces for each color. That means we cannot determine the cube color-scheme by looking at the center pieces (we'll use memory, or corner pieces). No fixed Center pieces: There are no fixed center pieces in the 4x4 cube, meaning these center pieces can move around the cube, and replace places with each other (unlike the 3x3 where yellow will always remain opposite to white, for example). There is no single center piece, but 4 center pieces per color therefore they are not fixed in their positions. The 4x4 mechanics is a bit different from the classic 3x3 Rubik's cube.
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