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CML Method method
Information about the method
Proposer(s): Various, Marc Waterman, Christoph Petsch, Tobias Petsch
Proposed: 2020
Alt Names: none
Variants: Waterman Method,Salvia Method
No. Steps: unknown
No. Algs: 20-40
Avg Moves: max. 60
Purpose(s): Speedsolving, FMC

The CML-Method (Corner-Middle-Layer-Method) is a speedsolving method created in 2020. It's predecessor was the Waterman Method, but CML uses far less algorithms and is effitiently enough to be a speedcubing method.

CML-Method in-depth

  • Step 1: First Layer (Blockbuilding or LBL approach)
  • Step 2: COCP-LL (Corner Orientation Corner Permutation Last Layer) (done on the last layer)
  • Step 3: EML (Edge-Middle-Layer)
  • Step 4: PML (Permutation-Middle-Layer)


turn the solved side on the back and insert the remaining edges of the last Layer with U-Perms and F-Moves to insert them, use also S moves or do f moves for better move speed. Sometimes the edges are misoriented (bad egdes in this sense). For these bad edges do: z' 2(M U M U) z . You can also correctly insert the edge directly by choosing one of the U-Perms.


Permutation of the Middle layer is done by a set of 6 algorithms. Only bad edges at the right position: R E' R B2 R' E R E B2 R2 E'

One bad edge and three have to be permuted. Hold the bad edge on the front left position and do for clockwise: U' F L F2 B U R' F' R F2 B' L' U F' counterclockwise: U F U' L F2 B R' F R U' F2 B' L' F' sometimes you have to do then: U2 R B' D R' B U2 D2 F' L D' F L' D2 ( for diagonal orientation of the edges on the Middle layer)

in case of no bad edge, hold the right permuted edge also on the front left side and do: clockwise: U R2 U' D B2 D' counterclockwise: U' D B2 U D' R2

the last case is a swap of two parallel edges: U2 R U' D F L2 D2 R2 B U' D R U2 B2


  • nearly no cube rotations needed
  • very fast blockbuilding in step 1
  • step 3 can be optimized by some more specific algorithms
  • can be used as a beginner speedcubing method
  • not much algorithms 20 - 40 (if optimized)
  • sub-20 is possible


  • E-moves are not ergonomic
  • can be slow on some cases
  • a lot of practice is needed to be really fast with this method