Rubiks Cube

2010-06-04T17:46:35Z

EdgarLoo: /* Third Layer */

This is a quick reference only. You must be familiar with the notation... You're probably best to find a more in-depth tutorial if none of this makes sense. :)

== Algorithms ==

* Corner Algorithm: '''Ri Di R D'''
* Middle Layer (Left): '''Ui Li U L U F Ui Fi'''
* Middle Layer (Right): '''U R Ui Ri Ui Fi U F'''
* Third Layer Cross: '''F R U Ri Ui Fi''' (Blue 'L' shape Should be in upper left-hand corner, repeat if necessary)
* Third Layer Opposite Edge Flip: '''R U Ri U R U U Ri'''
* Third Layer - Edges: '''R U Ri U R U U Ri U''' (with two lined up sides (one in right hand, one opposite of you)
* Third Layer - Corners: '''U R Ui Li U Ri Ui L'''

== Solving the Cube ==

=== First Layer ===

* Intuitively build a cross on the green face, ensuring non-corner edge pieces match center pieces of middle layer.
* Position each green corner piece below its target destination on the third layer
* With piece in place, hold cube green face up with target corner in bottom right-hand side
* Repeat '''Corner Algorithm''' until corner piece is in correct position
* Repeat for each corner until first layer is completely solved

=== Second Layer ===

* Place cube green face down, blue face up
* Find non-corner edge piece with no blue on it
* Line piece up with centre piece of middle layer
* Use either the '''Middle Layer (Left)''' or '''Middle Layer (Right)''' algorithms to place piece in the correct position in middle layer.

=== Third Layer ===

* If you do not have a blue cross on the blue face, use the '''Third Layer Cross''' algorithm.
* If you end up with backwards L shape. It should be placed at the top left.
* Need two edge pieces to line up with the same color in the middle layer.
* Place one lined up side in your right hand, the other needs to be opposite of you.
* Position any correct corner, WITHOUT spinning any [http://www.bestdissertation.com dissertation writing] sides, to the lower right hand corner of the blue face (blue is still on top).
* If no such corner exists (they are all in the wrong position) do the '''Third Layer - Corners''' algorithm from any position
* Use '''Corner Algorithm''' with target corner at bottom right of blue face until corner is flipped correctly.
* Rotate top clockwise to next unsolved corner
* Use '''Corner Algorithm''' with target corner at bottom right of blue face until corner is flipped correctly.
* Repeat for each last two steps for each unsolved corner.

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Rubiks Cube