5x5 edge parity
Swap the two wings of the top-front edge, nothing else moves.
- You start with (input)Solve it like a 3x3
- Result you will get after finishing this step5x5 edge parity
Which case do you have?
2R2B2U22LU22R′U22RU2F22RF22L′B22R2
Keep the front
Before you compare and all through the formula: keep the front (the face marked FACING YOU in the pictures) turned towards you. A picture marked BACK, AWAY FROM YOU looks from behind: do not turn the cube, just tilt it to see the back.
How to do it
- Sometimes the last edge looks almost right: the middle edge is correct but the two wings have swapped places, so the colours do not match. No outer turn fixes it: that is 5x5 edge parity.
- Bring that edge to the top-front edge and do the formula once.
This step: look only for
- Piece
- Wings
- Colours
- Two wings swapped round a correct middle edge
- Where
- The last edge
- How many
- 1 edge
Leave every other piece alone for now: the pictures show them in grey. Found one? Compare it with the cases below.
- A long formula: go slowly and count each turn.