If you can solve a 3×3, the next task is making a 4×4 behave like one. Each group of four center pieces becomes one center, and each matching pair of edge pieces becomes one edge. Reduction does not solve the corners or put every edge in its final place; it creates the pieces your familiar 3×3 method can work with.
Read Rw before starting
R turns only the outside right layer. Rw turns the outside right layer and the adjacent inner layer together; Uw does the same for the upper two layers. A prime reverses a turn and 2 means 180°. In the PLL formula, Rw2 R2 is two separate moves whose combined effect turns only the inner right layer by 180°. Our formulas use no whole-cube x rotation.
Read cube move notation →1. Build the six centers
A 4×4 has no fixed center sticker. Choose a color, join two center pieces into a 1×2 bar, make a second matching bar and join the bars into a 2×2 center. Build the opposite center next. Keep completed centers away from the slices you are using; if you temporarily split a center, undo that slice after moving the new bar out of its path.
The order matters. Standard cubes have white opposite yellow, blue opposite green and red opposite orange. Opposites alone do not fix left and right: use a real corner to check the order of its three colors. With white above and green in front, the standard right center is red. Other palettes must follow their own corner pieces. Check all six 2×2 centers before pairing edges.
2. Pair the twelve edges
Find two small edge pieces with the same two colors. A green–red piece needs another green–red piece, not just any green one. Bring them into working positions with outer turns. Use a slice to bring matching pieces together, move the completed pair out with outer turns, then reverse the slice to restore the centers.
Treat each completed pair as one unit. You are matching the two pieces, not solving that edge’s final position yet. Check that both stickers match on both sides of every pair. If the pieces face opposite ways, reposition one before joining them. When only two unmatched pairs remain, ordinary storage moves can break a pair you just made: use the exact last-two-edge example below rather than repeating a random slice.
Last two edges
Both remaining pairs must occupy the exact working positions shown. This sequence pairs them while restoring all six centers. Compare all affected stickers in 3D first; it is not a general formula for any two unmatched edges.
Uw' R U R' F R' F' R UwFinish the remaining edge pairs and restore the centers; the 3×3 stage is still ahead.
3. Use your 3×3 method
Once all centers are solid and all twelve edge pairs are joined, turn only the outer layers. Build the cross, complete the first two layers and work on the last layer using the 3×3 beginner guide. One 2×2 center block now acts as a single center; each two-piece edge acts as one edge.
If a pair separates, pause: an inner or wide turn was probably used where an outer turn was needed. Return to the preceding matching state or repair the pair and recheck the centers. A valid 4×4 can also produce last-layer cases that a 3×3 cannot. Those are the parity cases below.
Continue with the 3×3 beginner method →4. Recognize parity before choosing a formula
OLL parity means an odd number of reduced edges are flipped; it may appear as one flipped pair after the usual top-edge work. PLL parity appears later as a permutation that ordinary 3×3 moves cannot finish. Neither case means a sticker is physically broken or a corner must be twisted.
First check all centers and pairs. Place a flipped pair at the front of the top face for the OLL example. For PLL, the formula below changes the parity; it is not a universal final swap. Compare the complete starting diagram and then return to the 3×3 method. The demonstrations deliberately leave further last-layer work to do.
Checkpoints: six solid centers → twelve matching edge pairs → solved lower layers → last-layer checks. Do not move on merely because one visible face looks right.
OLL parity
Hold the flipped pair at UF: the top edge nearest you. Yellow faces up, green faces forward. This sequence changes the edge-flip parity and can move other top pieces; continue the 3×3 last-layer method afterward.
Rw2 B2 U2 Lw U2 Rw' U2 Rw U2 F2 Rw F2 Lw' B2 Rw2Keep the centers and paired edges intact after the full sequence, then finish the remaining 3×3 case.
PLL parity
Use after reduction when a last-layer swap cannot be completed with ordinary 3×3 moves. Keep the same top and front for the full sequence. It changes permutation parity; then re-evaluate the 3×3 case instead of expecting an automatically solved cube.
Rw2 R2 U2 Rw2 R2 Uw2 Rw2 R2 Uw2Keep the centers and paired edges intact after the full sequence, then finish the remaining 3×3 case.
If your case still does not match
For a mixed center, go back to step 1. For an unpaired edge, return to step 2. For correct centers and paired edges, compare the 3×3 last-layer cases before choosing a parity formula. If you have lost track, enter all 96 stickers in the 4×4 solver to get a verified sequence for that position. Its color input is manual; photo recognition is not available for 4×4.
Open the 4×4 solver →