# Rubik's Cubes

### By: Andrew SImpson

## About the Rubik's Cube

The Rubik's Cube was invented in 1974 by a professor named Erno Rubik, hints the name the Rubik's Cube. The cube is a 6 sided 3-D puzzle that has a different color for each side. You can make turns vertically and horizontally to mix up the cube. Once the cube is mixed up the goal is to get all the colors the same for all 6 sides.

## How to Read Scrambles and Solve Algorithms

For solves and for scrambles there are certain ways you need to move the cube in order to solve or scramble it correctly. For the right side if you see R you lift up the right side if you see R' you bring the right down. You would do the exact same for the left side. If you see L bring the left side up if you see L' then your bring the left down. For the top and bottom layers you move them right or left. If you see U move the top right if you see U' move the top left. On the bottom if you see D move the bottom right if you see D' then move the bottom left. For the front and the back you move them clockwise and counterclockwise. If you see F move the from clockwise if you see F' move the front counter clockwise. For the back if you see B then move the back clockwise if you see B' the move it counterclockwise.

## Algorithms And Sections to Build For The Rubik's Cube to Solve (First Layer)

In order to solve the Rubik's Cube you need to use certain algorithms to solve it. You use algorithms to solve it layer by layer until you solve the cube. In the first layer you want to first build the cross so it appears that there is a cross of one color on a side and the centers are aligned with the cross. Second you want to put in the corner pieces if in the optimal position. The third step if your corners aren't in the optimal position move them off the top to the bottom layer line them up between the 3 centers of the corner colors and put in the corner.

## Building The Second Layer of a Rubik's Cube

Since you lined up the cross in the first layer you wont have to put the cross piece in while doing the second layer. when doing the second layer you want to only place the edge pieces in. Placing the edges in is probably the part you need to be the most careful on. If executed incorrectly the first layer could get messed up. When done with the second layer your cube should look like the picture below.

## Building The Third And Final Layer of a Rubik's Cube (Part 1)

First you work on building the cross. Building the cross is built in steps. First you want to get the the "Inverted L." Once you get that you will want to repeat the same steps to get the strait line. Turn the cube so the line is horizontal if it isn't already. Once it's horizontal repeat those steps one final time. You should have the cross. Continue to spin the layer until the edges line up with the center. If they don't line up then you will need to repeat a series of algorithms to make the cross.

## Building The Third And Final Layer of a Rubik's Cube (Part 2)

You'll then want to rotate your corners until the three colors on one corner is lined up with the colors of the centers. Once all the corners are all in the right spot either 0,1,2,3, or all corners will be solved correctly. Based on how many you have solved correctly that will determine how many extra algorithms you will have to do to solve the Rubik's Cube.

## Fun Facts About The Rubik's Cube!

The fastest 3x3 time solved was by Lucas Etter with an astonishing 4.903 seconds

The worlds largest 3x3 Rubik's Cube is a 30cmx30cmx30cm. It was solved by Mats Valk and Feliks Zemdegs.

The Rubik's Cube has over 519 quintillion (519,000,000,000,000,000,000) different types of scrambles.