# Twisting PuzzlesPocket Cube (2x2x2) - Intermediate Solution

## Introduction

This method is based on a well known method called Ortega which would be the first stage of a corners-first approach to solving the 3x3x3 cube. There are 3 steps to the solution.

• Orient the top corners
• Orient the bottom corners
• Permute both layers at the same time

The Ortega method has the advantage of being relatively quick (average approx 20 quarter turns) with a small number of algorithms to learn.

## Notation

The notation is as for the simple solution, with the addition of the letters x, y and z. These indicate rotations of the whole cube about that axis. An apostrophe indicates an anti-clockwise rotation. So y' indicates an anti-clockwise rotation of the cube so that the L face becomes the F face.

## Step 1- Orient The First Layer

Basically make a white layer without worrying about where the corners are. It doesn't take more than 3 turns to move each corner into place. If you study the cube carefully before starting, you can line up the turns in your head and do this very quickly.

## Step 2 - Orient The Second Layer

There are 7 cases not counting fully oriented case. If you are taking the easiest colour to finish when doing the first layer, you can usually spot the orientation case that you are going to get. In the diagrams, the lines outside the puzzle indicate the position of the twisted bottom layer sticker.

0 Oriented 0 Oriented 1 Oriented 1 Oriented
R2 U2 R U2 R2 R U2 R2 U' R2 U'
R2 U2 R
L' U R U' L U R' U R U' L' U R' U' L

2 Oriented 2 Oriented 2 Oriented
R' F2 U' F U F2 R F R U R' U' F' R' F2 U' F' U F2 R

When there is only one oriented cubie, the algorithms are 3-cycles. One is the reverse of the other. The difference between the two cases is easy to spot. With the oriented cubie in the upper front right corner, the top left corner of the front face will either show the same colour or not. If it shows the same colour, do the first algorithm, if not, do the second. Even if you choose the wrong one, doing it again will orient the bottom face.

Similarly, two of the algorithms for 2 oriented pieces are also the reverse of one another. Perform either algorithm on the solved cube and you get the other case.

## Step 3 - Permute Both Layers

There are 5 cases not counting the solved case. You can turn the cube over if needed to find the case you are looking for. In the diagrams, the lines indicate correctly placed corners. You are looking for pairs of colours on the sides of the cube.

Combination Swap Horizontal Swap - Both Layers
R U' R F2 R' U R' R2 U R2 y' U2 R2 U R2

Diagonal Swap - Both Layers Horizontal Swap - Bottom Layer
R2 F2 R2 R' D L D' R D2 L' D L D2

Diagonal Swap - Bottom Layer
F2 D' L D' L' D F2 D L D L'