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MI2

Description​

Proposer: Michael James Straughan

Proposed: 2010

Steps:

  1. Orient all edges while solving a line of edges at FL and BL. This step is called EOLine.
  2. Build a 1x2x3 block of oriented pieces on both the bottom and upper layer.
  3. Orient the remaining corners while placing the FR and BR edges.
  4. Permute all corners and edges.

MI2 Website

Click here for more step details on the SpeedSolving wiki

Origin​

Development​

In late 2009, Michael James Straughan began experimenting with combining the EOLine step of ZZ with Corners First. The result was a method that solved all corners after EOLine, then the permutation of all remaining edges [1, 2]. The two initial ideas were:

Idea 1

  1. EOLine on the bottom.
  2. Solve all corners.
  3. Solve the UF and UB edges.
  4. Permute the left and right side edges.

Idea 2

  1. EOLine on the left.
  2. Solve two corners at the bottom left, avoiding having the FR or BR edges connected to the corners.
  3. Solve the two pairs at dFR and dBR.
  4. Solve the U layer corners.
  5. Permute the U and D edges.

MI2 was placed on Straughan's first website. This website wasn't preserved well on archive.org and only the main page remains archived [3].

In October, 2011 Straughan discovered the oriented blockbuilding concept and incorporated it into MI2 [4]. This set the steps of the method to what they are now.

References​

[1] M. J. Straughan, "ZZ and ZB Discussion," SpeedSolving.com, 4 May 2010. [Online]. Available: https://www.speedsolving.com/threads/zz-and-zb-discussion.20834/post-374352.

[2] M. J. Straughan, "Random Cubing Discussion," SpeedSolving.com, 6 September 2011. [Online]. Available: https://www.speedsolving.com/threads/random-cubing-discussion.22862/post-638800.

[3] M. J. Straughan, 110mb.com, March 2010. [Online]. Available: https://web.archive.org/web/20110224050936/http://athefre.110mb.com/.

[4] M. J. Straughan, "Random Cubing Discussion," SpeedSolving.com, 3 October 2011. [Online]. Available: https://www.speedsolving.com/threads/random-cubing-discussion.22862/post-650817.