A dedge is a combination of two edges.

Solve centres
Solve dedges

Solve the dedges by referring to the diagrams:

None :-(
None :-(
Fix dedge parity errors if required

There is a 50–50 chance of having an odd number of dedge flips. There is also a 50–50 chance of of having a permutation parity error – i.e. two dedges need to be swapped but the rest of the cube is correct (it might not be easy to see this until the cube is nearly solved). Fix them with the following step.

  • If a single dedge needs to be flipped, hold the cube with that dedge at UF, then apply the following algorithm:

    r2 B2 U2 l U2 r' U2 r U2 F2 r F2 l'B2 r2

  • If a pair of dedges need to be swapped, hold the cube with those dedges at UF and UR, and apply the following algorithm:

    (D2 D2) (R2 r2) U2 r2 U2 (R2 r2) (D2 d2)
Solve as per 3×3×3 cube

Solve the cube using any 3×3×3 method.