Difference between revisions of "Petrus Method"
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== Petrus variations == | == Petrus variations == | ||
| − | There are several other [[sub step|substeps]] that can be used [[EJLS]], [[WV]], [[COLL]], [[ | + | There are several other [[sub step|substeps]] that can be used [[EJLS]], [[WV]], [[COLL]], [[JSLS]], and [[ZBLL]], which completes the entire last layer in a single algorithm. |
== Petrus as a Beginner Method == | == Petrus as a Beginner Method == | ||
Revision as of 00:07, 22 January 2010
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The Petrus Method, invented by Lars Petrus, is a block-building method where the F2L is solved intuitively with no algorithms. Behind Fridrich, it is currently the second most popular speed cubing method in use.
Contents
The Steps
1. First, build a 2x2x2 block anywhere on the cube.
2. Next, you expand the 2x2x2 block to a 2x2x3 block.
3. After that, you fix the "bad edges" or orient the remaining seven edges on the cube that have not been solved.
4. Then, you finish the First Two Layers (F2L). The pure Petrus approach is to create a 1x2x2 block and expand it to a 1x2x3 block to finish off the F2L, not to solve the cross piece and two corner/edge pairs.
5. Next, you permute the last layer corners, or put them in their proper places (they do not have to be oriented.)
6. Now, you orient the last layer corners, making the whole last layer a solid color.
7. Finally, you permute the last layer edges, without disturbing anything else, to solve the cube.
Pros
The Petrus Method uses fewer moves than the Fridrich method and most other non-block-building methods. It is more intuitive than the Fridrich method, and it requires far less algorithms.
Cons
It can be sometimes hard (especially for a beginner) to optimize block building, and it's difficult to keep consistently turning throughout the solve.
Petrus variations
There are several other substeps that can be used EJLS, WV, COLL, JSLS, and ZBLL, which completes the entire last layer in a single algorithm.
Petrus as a Beginner Method
Used as a beginner method, Petrus requires much more intuition, but also involves learning fewer algorithms. For a tutorial, see the external links below.
External Links
- Lars Petrus's tutorial
- Petrus Speed Website
- Speedsolving.com YouTube Beginner Petrus Tutorial
- YouTube: Petrus Tutorial by fallofshadows
- YouTube: Petrus Tutorial by CuberChris
