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ACMLL Main.png
Proposer: James Straughan
Proposed: 2020
No. Algs: Varies
Purpose: Speedsolving

ACMLL is an algorithm set for the Roux method. After the application of the A3 blockbuilding technique to the first two blocks, ACMLL corrects the blocks while solving CMLL.


Users take advantage of pre-formed or easy to build and place blocks to create F2B in a way that the left and right block aren't perfectly formed. F2B can contain flipped pairs, swapped pairs, pairs from the opposite side block, and even misoriented and or swapped individual pieces. The ACMLL step then corrects F2B while solving the final four corners. This technique and step provides multiple benefits including: Significantly reduced move-count, the ability to plan more during inspection, and improved ergonomics due to it not being a requirement to flip a misoriented pair into its correct slot.

There are various possible ways of arranging F2B. The most advantageous blocks can be identified and users can continually progress in building new block arrangements while learning the associated ACMLL sets.

Example Solves

Example 1

  • Scramble: U F L2 D2 L F2 B' U L' U L2 D' L2 B2 D B2 D' L2 F2
  • FB: y2 F' r B2 D'
  • SB: U2 r U' r2 U' M' U' r
  • ACMLL: U F U R U' R2 F2 U' F R U R
  • LSE: M' U M' U M U' M U2 M2 U' M' U2 M

Example 2

  • Scramble: R' L2 B2 U D2 L' F' B' U B2 L2 B' R2 B R2 B2 R2 U2 B R2
  • FB: x2 F M' F U' M2 B
  • SB: R2 U' R2 U' R' U' R U r'
  • ACMLL: U2 R U2 R U2 R2 U2 R' F R F'
  • LSE: U M U' M' U' M' U2 M' U M2 U2 M U2 M

Example 3

  • Scramble: R' B R2 D2 B' U2 B2 L2 F R2 F' D2 B2 R F R' U' F2 L2 D'
  • FB: x D' R F
  • SB: M2 U' r' U' R' U2 R' U' M2 U' R'
  • ACMLL: U2 R U R' F' R U R' U' R' F2 R2 U L'
  • LSE: U M U2 M' U2 M' U' M' U2

Example 4

  • Scramble: U' R2 D F2 R2 D' L2 D' L2 D2 R' F' D2 B F2 U' L U L'
  • FB: y2 x' M2 F B2 D2 F
  • SB: R' U M R U' R2 U M2 U M' U' R
  • ACMLL: U F U2' F' U' L'
  • LSE: M' U' M U' M' U M U' M' U2 M2 U2 M

Example 5

  • Scramble: D2 B U D' R' F' U R D2 R' F2 U2 D2 F2 L B2 L U2 R' U' L
  • FB: x F R2 U F' B
  • SB: R2 U' r' R' U r2 U2 M U r'
  • ACMLL: U' R' U' R U2 r U R' U' r'
  • LSE: M U M' U' M2 U2

See Also

External links