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Lesson 2

Edge Solving

In Old Pochmann, we solve edges one piece at a time using the UF edge as a buffer. We read the sticker at UF, find where it belongs, move that target piece to UR, perform a T-perm, and undo the setup.

The Edge Cycle

  1. Look at the UF edge. Read its letter — this is your first target.
  2. Find that target piece and use setup moves to bring it to the UR position.
  3. Execute the T-perm to swap UF and UR.
  4. Undo the setup to restore everything except the solved edge.
  5. Repeat with the new piece in UF until all edges are solved.

Edge Swap Algorithm (T-Perm)

R U R' U' R' F R2 U' R' U' R U R' F'

This swaps UF and UR edges. It also swaps two corners, but that is harmless because we solve corners afterward.

Setup Move Examples

A setup move brings the target edge to UR. The setup must not disturb the UF buffer. After the T-perm, undo the setup.

UR (B)
(none)
Already in place
BR (E)
D' L2
Bring BR to UR
FR (G)
D L2
Bring FR to UR