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How to solve a rubrics cube.
Transcript of How to solve a rubrics cube.
Hello class of 74. I am here to teach you the steps to solve a Rubik's Cube. First, I'm going to tell you some of the history of the Rubik's Cube.
In 1974, Erno Rubik created an object that was not thought to be possible. With colorful stickers on its sides, the Cube got scrambled and the first “Rubik’s Cube” was invented. Even for the inventor himself, it took well over a month to work out the solution to his puzzle.
Erno never expected that the Rubik’s Cube would become one of the world’s best-selling toys.
Originally made of wood, Erno simply thought of the Cube as an object of art or a mobile sculpture.
The Mystery of the Rubik's Cube.
To get familiar with the Rubik's Cube lets take a look a the different parts.
Looking at the pictures to the left you can see that there are edge pieces, corner pieces and center pieces.
The Rubik's Cube has six different sides to it. They are right, left, down, up, back and the front.
As shown in the picture, when you are turning the cube you can refer to the turns as right, right inverted, left, left inverted, down, down inverted, up, up inverted, back, back inverted and front, front inverted.
All the turns I've talked about are made with the cube facing you.
The first thing to know about the cube is that the middle pieces don't move. They rotate, but they never move in relation to each other, which means that each face will always be that face.
It is also important to remember that the edge colors have to be aligned with the centers like this:
Step 1 - The Cross
Trying to Solve the Cube
If you look up on Google how to solve a Rubik's Cube, many different ways will come up, such as using mathematical algorithms, or just turning it until you get it. Today I will show you the best way I know to solve the cube. The method I use consists of 5 steps.
Step Two - The Corners
When you are trying to solve the cube hold it with the top white center piece facing you and create a white cross. You won't get it in the matter of 3 seconds but all the steps are achieved with practice and trial and error.
Step 4A - The Last Layer Cross
your 1st stage goal
Step 4B - The Last Layer Edges
your stage 2 goal
If the white corner piece is on the bottom of the cube you have to turn the bottom piece until it's directly under the white corner.
After, to get the white corner to the top, do the following sequence (ri, di, r, d), as many times as it takes. Do this sequence for all four corners.
should look like this after that step
Step 3 - The Second Layer
The goal at this point is to get the
in the right place. Start by turning the
upside down. So it looks like this.
Next you have to create a vertical line for the red and blue sides. Then rotate the front face until the front color of the edge is on the top face. The colors on the edge face will determinate wich way the edge piece should move.
If you are moving the edge piece right, here is the sequence you should use (u, r, ui, ri, ui, fi, u, f).
If you are moving the edge piece left, the sequence you should use is (ui, li, u, l, u, f, ui, fi).
Make the same cross that you made at the beginning, but just with yellow.
The sequences you can use to make the yellow cross are (f, u, r, ui, ri, fi) and
(f, r, u, ri ui, fi).
Looking at the top of the cube, the goal here is to finish this step with a completed yellow top.
To achieve the 4 corners, the sequence you can use is (r, u, ri, u, r, u, u, ri).
Do this sequence as many times as you need to in order to achieve all 4 corners.
Step 5A - The Last Layer Corners
Step 6b - The Last Layer Corners
Now that I have shown you these steps
to solve the cube, let's watch somebody finish it in under 10 seconds!
The only turns you need to remember for this stage are: ri, di, r, d.
Continue that sequence until the cube is completed.
There you have it a finished cube.
Successful completion of this step will result in a finished cube!
Before you start you should look at your cube to see if there are corner pieces already in place.
In the picture to the right the edges are in the right place just not the right way.
An algorithm to get them in the right stop is (u, r, ui, li, u, ri, ui, l).
Now it on to the last step.