How to collect Rubik's cube 2x2. Algorithm for building a Rubik's cube 2x2

Rubik's Cube is one of the most popular and loved by many puzzle.

Few historical facts

A toy called "Rubik's Cube" was invented back in 1974 by a Hungarian sculptor and architecture professor Erno Rubik. There is a version that originally this puzzle was developed as a textbook, with the help of which it would be easier for children to understand the mathematical theory of groups.
At first it consisted of 27 wooden blocks with borders of different colors. Later, more than once changed, until it got its final look. And already in 1975 the developer of this toy received a patent for his invention, after which the Rubik's cube (as they call it in the common people) entered mass production. For the first time it went on sale as a New Year's toy in 1978 under the name "Magic Cube"
After that there was a sharp rise in the popularity of this puzzle, and a decline in demand among buyers. And now in our time interest in Rubik's cube began to grow again actively.

Assembly scheme for the Rubik's cube 2x2

Having bought this puzzle, many can spend whole days, or even weeks, puzzling over how to collect it. And not all of this is obtained. In order to learn how to collect a 2x2 cube, you do not need to be a genius. To do this, it is sufficient to study the existing schemes and special algorithms with which you can easily and quickly assemble it. It is a clear scheme for assembling the Rubik's cube 2x2 to help you easily figure out how to do it.

For today in shops it is possible to find a plenty of various variants of a cube of Rubik: a cube with cells 2 on 2, 3 on 3, 4 on 4, 5 on 5, etc. We will stop in detail on the information useful for beginning cubers, namely on How to collect a Rubik's cube 2x2. There is a certain algorithm for assembling this puzzle, without knowledge of which it is possible to try to solve it for a very long time and to no avail. It should be noted that for a huge number of people around the world, the assembly of the Rubik's cube has become the subject of competition. So, for example, a well-trained cuber can collect a Rubik's cube in thirty seconds, while a world champion - a maximum of eight. In order to get a little closer to such results, let's consider the options for how to collect a Rubik's cube 2x2. This toy is a mini version and consists of six colors on six sides, each of which has four cubes. Such a cube is not so easy to fold, as it might seem at first glance. Even though there are fewer combinations than the standard Rubik's 3x3 cube, the beginning cuber will have to spend a lot of time to successfully build a Rubik's 2x2 cube.

Assembly scheme Rubik's cube 2x2

The assembly scheme of the Mini Rubik's Cube (this is sometimes called a Ruby 2x2 cube) is quite simple. Following this scheme, you can collect a Rubik's cube 2x2 maximum in 20 minutes. Before proceeding directly to the assembly process, it is necessary to properly study the instructions to this puzzle and the terms described in it.

Terminology

In the description of the assembly scheme of the Rubik's cube, as a rule, one can find a special terminology used to display the sequence of rotations of the cubes' planes.

The first and most important thing to understand is the conventional notation for the sides (planes) of the cube. To do this, you need to take a 2x2 cube in your hands so that one of its planes is at eye level. It is this side of the cube that is called the frontal and is denoted by the letter Φ (F). The other parties are designated as follows:
• H (D) is the lower,
• In (U) is the upper,
• П (R) is the right one,
• A (L) is the left,
• T (B) is the rear.
The color of the sides of the cube does not matter.

How to assemble Rubik's cube 2x2, following the scheme?

It's very simple - it's important to stick to the sides of the cube chosen at the very beginning of the combination.
With the definition and designation of the planes of the cube, we sort of figured out what to do with them further? There are two types of rotation of the plane of the cube: the first is a rotation by 90 ° clockwise and the second - by 90 ° in the opposite direction - counterclockwise.
There are several more symbols used in the process of building a Rubik's cube:
• "-" symbol - applied when rotating in the direction opposite to the clockwise direction indicated by the previous side;
• the designation "2" can also be used, which means that the side needs to be rotated by 90 degrees twice (in the end - by 180 degrees).
So, consider the algorithm for assembling the Rubik's cube 2x2.

Step 1. We collect the first (lower) layer

The first thing to do is to assemble the bottom layer in such a way that all four cubes from below are of the same color, and the remaining two correspond to the colors of the cubes located in the neighborhood. After building the bottom layer, you can proceed to the next step, which allows you to understand how to make a Rubik's 2x2 cube (or, more precisely, to assemble it).

Action # 2. Collect the top layer of the cube

At this stage of the assembly, you need to place the cubes in the upper part in their places, and do not necessarily match their colors. The latter can be done later.

First you need to decide on the color of the top plane. To do this is absolutely simple: the color of the upper plane of the cube is the color that is not in the lower layer. Next, you need to rotate the top part until the selected upper dice does not occupy the desired position by hitting the intersection corner of all three colors of this element. It is not necessary at this stage that all colors match in the selected element.

After one of the four corners of the cube is fixed, you need to correctly place the parts of the remaining corners. This can be done by selecting one of the two existing combinations. The first combination allows you to swap diagonal cubes, the second - adjacent. As a result, in order to properly arrange all the angular cubes, you only need to select the desired combination. This combination may look like this: FPVV'B'F' (1) FVF'V'L'V'L (2).

Step 3. Rotate the cubes of the top layer

All combinations produced at this stage of the Rubik's cube assembly must be paired. First you need to rotate one corner (for example, counter-clockwise), then the second, but in the opposite direction, according to the second combination (clockwise). The same actions can be performed for three angles, which must be turned to the same side (in this case, three times one of these combinations).

At this point, it may seem that the cube has become even more confusing, but do not worry. In order to bring the cube back to the assembled view, you need to rotate the other corner in a different direction until it happens. In this case, between the operations performed, you just need to rotate the top face until a certain angle is located in the upper right corner. Combination: П'Н2ПФН2Ф' (3) ФН2Ф'П'Н2П (4).
For the three angles that you want to rotate in the same direction, you can also use other combinations. For example, you can arrange the cube so that the selected angle turns into the far upper left.

To rotate the remaining three angles in the direction opposite to the clockwise direction, you can use the following combinations: (VFVVP'V'F') 2 (5) - combination (1), performed twice; Or В2ФВ2Ф'В'ФВ'Ф' (6); Or FVF2LFL2VLV2 (7);
Rotation of the same angles, but clockwise, can be performed by performing the following combinations: (FVPV'P'F'V') 2 (8) - a combination (2), performed twice; Or FWF'VFB2F'B2 (9); Or B2B'B'A2F'L'F2B'F '(10).

In fact, the assembly of the Rubik's cube 2x2 can become a simple and even fascinating exercise. The main thing is to stick to the algorithm described above, and then everything will turn out. And after that you can safely take on more challenging puzzles!