3OP

Example solve from Shotaro Makisumi

Description

Creator: Richard Carr, Olly Hayden

Created: ~2002

Steps:

1. Orient corners and edges separately.
2. Permute corners and edges separately using three-cycles.

Click here for more step details on the SpeedSolving wiki

Original Development (Richard Carr)

Around 2001 to 2002, Richard Carr developed a blindfold solving method that involved first separately orienting all corners and edges [1]. The corners are then permuted using simple one move setups in combination with a corner three cycle algorithm executed on the U layer. Carr’s method was placed on Jessica Fridrich’s website.

Expanded Development (Olly Hayden)

In 2002, Olly Hayden presented a similar method on his website [2]. The method contains the same general steps as Carr’s method. The primary difference is in the permutation setup moves and algorithms. In Hayden’s development, pieces are moved to the U or D layer using the group U, D, F2, B2, R2, L2. After the setup moves, a permutation algorithm is used to cycle the corners, then the setup moves are undone. A complete guide with better algorithms was later developed by Shotaro Makisumi [3].

Discussion Between Carr and Hayden

In August 2002, Carr and Hayden had a conversation comparing the difference in the permutation styles [4, 5, 6]. Carr stated that he had considered the way as described on Hayden’s site, but found it difficult.

Earlier Proposal (Jessica Fridrich)

On March 11, 1998, Wei-Hwa Huang asked the Cube Lovers mailing group if there were any techniques for blindfold solving [7]. Jessica Fridrich responded by suggesting that it may be possible to first orient all pieces, preserving their permutation, then permute all pieces, preserving their orientation [8].

References

[1] R. Carr, "Blindfold cubing," 2002. [Online]. Available: http://www.ws.binghamton.edu/fridrich/Richard/BC.html.

[2] O. Hayden, "Blindfold Cubing," February 2002. [Online]. Available: https://web.archive.org/web/20020221054757/http://homepage.ntlworld.com/angela.hayden/cube/blindfold_frontpage.html.

[3] S. Makisumi, "A 3-Cycle Guide to 3x3x3 Blindfold Cubing," 1 January 2008. [Online]. Available: https://www.cubefreak.net/bld/3op_guide.php.

[4] R. Carr, "Re: [Speed Solving Rubik's Cube] Blindfold," Speed Solving Rubik's Cube Yahoo Group, 16 August 2002. [Online].

[5] O. Hayden, "Re: [Speed Solving Rubik's Cube] Blindfold," Speed Solving Rubik's Cube Yahoo Group, 19 August 2002. [Online].

[6] R. Carr, "Re: [Speed Solving Rubik's Cube] Blindfold," Speed Solving Rubik's Cube Yahoo Group, 19 August 2002. [Online].

[7] W.-H. Huang, "Blindfold Cube-solving," Cube Lovers, 11 March 1998. [Online].

[8] J. Fridrich, "Re: Blindfold Cube-solving," Cube Lovers, 11 March 1998. [Online].