4x4 Parity [exclusive] Jun 2026

Yes — this swaps the two opposite edge pairs on the last layer (UF↔UB and UR↔UL) without affecting corners. After this, your cube will have a solvable 3×3 PLL.

(Permutation of Last Layer parity) – Two edges (or two corners) need to be swapped, which is impossible on a 3×3. Appearance: Two adjacent or opposite edge pairs need swapping, or you get an impossible PLL case like two swapped corners. 4x4 parity

There are two main types you will encounter during the "3x3 stage" of a 4x4 solve: Parity or: How I Learned to Stop Worrying and Love the 4×4 Yes — this swaps the two opposite edge