7x7

Step 1 — White Center

Build the white 5x5 center grid by making four 1x5 bars.

Pair the white center piece with 4 White inner-edges to make a 1x5 line.

Once a bar is made, hold it vertically on the white face so moving new layers around won't accidentally break it.

Build four 1x5 bars in total and line them up side-by-side to complete the 5x5 white center block.

Step 2 — Yellow Center

Flip the cube so White is on the bottom.

Build a yellow bar on the top face while preserving the white center using: Rw and U

When inserting the last yellow bars, line up the incoming yellow bar in the exact same column as a yellow bar already on top. Pushing it up, turning U2, and bringing it back down will swap them and leave all yellow bars on top while keeping white intact.

Step 3 — Side Centers

With White on the left and Yellow on the right, solve the 4 middle centers around the sides.

Solve the first two centers using the Rw U2 Rw' bar-insertion logic.

When space gets tight on the last two side centers, build remaining 1x5 bars using Center Commutators to swap individual pieces or partial bars between the two faces without messing up finished centers:

Push the piece in → move to a new layer → push second layer down → move back to old layer → bring first layer back up → move back to new layer → bring second layer back up.

Step 4 — Edge Pairing

Find two matching edge pieces and place them on the front-left and front-right edges.

Flip if needed: Use the edge flipping algorithm (R U R' F R' F' R) on the right edge so the pieces are positioned diagonally from each other:

Slice the inner layers horizontally to pair the matching edge pieces together.

Move the newly completed edge up into the top layer (U), swap it with an unsolved edge, and bring it back down (U').

Slice the inner layers back to restore all 6 center grids.

When no unsolved top/bottom edges remain, place matching pieces on the same horizontal row and use slicing and flipping turns to join them directly without breaking centers.

Step 5 — Fix The Parity (If Needed)

There's a 50% chance one single edge piece remains flipped or mismatched.

Rw U2 x Rw U2 Rw U2 Rw' U2 Lw U2 5Rw' U2 Rw U2 Rw' U2 Rw'

Step 6 — Solve Like a 3x3

Turn only the outer layers (R, L, U, D, F, B) and solve the rest of the cube like a standard 3x3!