Step 4 of 4 · 2-look last layer
Placing the edges: Ua, Ub, H and Z
Finish the cube by placing the 4 top edges.
Keyboard: Enter to continue, ← to go back. Keep your hands on the cube.
Read whole lesson on one page
One side fully solved: hold it at the back. The three other edges cycle: to the left, it’s Ua; to the right, Ub.
No side solved: if the edges have to swap with the opposite one, it’s H; with the neighboring one, it’s Z.
One last U to line up the top, and the cube is solved. With these 4 steps, you have all 16 algorithms of the 2-look last layer.
Remember: Ua and Ub only use M and U: keep your hands in the same place and let your ring finger do the M moves.
The cases
- Ua-perm: M2 U M U2 M' U M2. Edges: three edges cycle.
- Ub-perm: M2 U' M U2 M' U' M2. Edges: three edges cycle the other way.
- H-perm: M2 U M2 U2 M2 U M2. Edges: swaps opposite edges.
- Z-perm: M' U M2 U M2 U M' U2 M2 U'. Edges: swaps two pairs of adjacent edges.
Troubleshooting
- The edges cycle the wrong way
- You did Ua instead of Ub (or the other way around). No big deal: do the same algorithm one more time.