Layer by layer

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Layer-By-Layer, or normally only LBL is a group of methods that solves the cube in layers. In the basic, beginner LBL method, the solver finishes the layers one at a time: the first layer edges, then corners, then the second layer edges, and finally the last layer. This is a common method for new cubers to discover on their own. In more advanced LBL methods, you solve layers more efficiently or solve two layers at once. For example, in the CFOP method, one solves the first two layers simultaneously by forming a cross of the first layer edges, and then filling in four pairs of a corner and an edge into the so-called slots.

3x3x3 LBL Method

LBL (3x3x3) Method
Layer by layer.gif
Information about the method
Proposer(s): David Singmaster and others
Proposed: 1970s
Alt Names: none
Variants: CFOP, 8355
No. Steps: 5+
No. Algs: 6+
Avg Moves: 80+

There are many 3x3x3 methods that fully or partially use a LBL approach, including CFOP, the method used by most top speed cubers in the world. Three examples of how cubers might approach LBL:

Introductory 3x3x3 LBL

Scramble 04.jpg

Scrambled cube -> (Daisy ->) Cross -> Corners XG -> Std LBL edges -> 4-Look Last Layer -> Solved cube

The Beginner Method is a 3x3 beginner method.

Mini maru.jpg

At this stage the novice cuber truly completes each layer one after the other, using few algorithms but taking perhaps over 100 moves.

Main Article : The Beginner Method

Intermediate 3x3x3 LBL

At this stage the cuber may develop strategies such as keyhole to reduce middle layer moves, as well as learning further last layer algorithms.

Advanced 3x3x3 LBL

The advanced LBL cuber often uses CFOP, employing fast, intuitive F2L techniques and learning many more last layer algorithms to reduce moves and improve speed further.

2x2x2 LBL Method

LBL (2x2x2) Method
Information about the method
Proposer(s): none
Proposed: 1970s
Alt Names: none
Variants: CLL
No. Steps: 3
No. Algs: 3+
Avg Moves: 25+

Done as if solving the 3x3 corners using the Layer-By-Layer method. You can use shorter last layer algs because there are no edges that need to be kept in position on a 2x2. You can use any OLL of your choice as long as the corners are in the correct position. There are two options for the last layer in a beginner 2x2 solve:

  • Orientation followed by Permutation
  • Permutation followed by Orientation

See also

External links

Web pages

Video tutorials