Omar Khalid
Plastic cube puzzles are a fun and challenging way to pass the time. One of the most famous plastic cube puzzles is the Rubik's Cube, invented in 1974 by Hungarian sculptor and professor of architecture, Ernő Rubik. The puzzle consists of 21 pieces: a single core piece made up of three intersecting axes that hold the six centre squares in place, and 20 smaller plastic pieces that fit into it. The Rubik's Cube was initially created as a teaching tool to help students understand 3D objects and solve the structural problem of moving parts independently without the mechanism falling apart. Since its international debut in 1980, it has become a worldwide phenomenon, with numerous speedcubing championships and strategies dedicated to solving it.
| Characteristics | Values |
|---|---|
| Inventor | Ernő Rubik |
| Year of Invention | 1974 |
| Original Name | Magic Cube |
| No. of Pieces | 21 |
| No. of Smaller Plastic Pieces | 20 |
| No. of Centre Pieces | 6 |
| No. of Faces | 6 |
| No. of Stickers per Face | 9 |
| Colors | White, Red, Blue, Yellow |
| Awards | German Game of the Year (1980), Best Puzzle (1980), Inducted into the US National Toy Hall of Fame (2014) |
| No. of Cubes Sold Worldwide | 500 million |
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What You'll Learn
History of the Rubik's Cube
The Rubik's Cube is a 3D combination puzzle invented in 1974 by Hungarian sculptor and professor of architecture Ernő Rubik. Originally called the Magic Cube, the puzzle was first licensed by Rubik to be sold in the UK in 1978, and then by Ideal Toy Corp in 1980. The cube was released internationally that year and became one of the most recognised icons in popular culture.
Rubik's initial purpose in creating the cube was to solve the structural problem of moving the parts independently without the entire mechanism falling apart. He did not realise that he had created a puzzle until the first time he scrambled his new Cube and then tried to restore it. It took him a full month to solve his own puzzle. Rubik was shocked by the runaway success of the cube, which he believed would appeal to those with science, math, or engineering backgrounds.
The first test batches of the Magic Cube were produced in late 1977 and released in toy shops in Budapest. With Ernő Rubik's permission, businessman Tibor Laczi took a Cube to Germany's Nuremberg Toy Fair in February 1979 in an attempt to popularise it. It was noticed by Seven Towns founder Tom Kremer, and they signed a deal with Ideal Toys in September 1979 to release the Magic Cube worldwide. Ideal wanted at least a recognisable name to trademark; that arrangement put Rubik in the spotlight because the Magic Cube was renamed after its inventor in 1980.
The Rubik's Cube has inspired other designers to create a number of similar puzzles with various numbers of sides, dimensions, and mechanisms. The cube has also inspired numerous artworks and films, and spawned a competitive sport called speedcubing. Since 2003, the World Cube Association (WCA), the international governing body of the Rubik's Cube, has organised competitions worldwide and has recognised world records.
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How to disassemble a Rubik's Cube
To disassemble a Rubik's Cube, you can use either your hands or tools like a screwdriver. The first step is to turn the top layer 45 degrees. Hold the cube flat and turn the top layer so that its corners stick out over the middle squares of the second layer.
The next step is to remove a middle piece from the top layer. Use slow, steady pressure to pry it out without breaking it. You can use a screwdriver if your fingers are not strong enough or the cube is too stiff. Once the first piece is out, the two corners will fall out, and the rest of the pieces will come out easily. There are eight corners, twelve edge pieces, and an inner core containing six centers.
If your cube is too tough, you can try to twist a side layer to free the inner anchor of the upper edge. To adjust the tension of the cube, you can pop out the caps on the center pieces and screw or unscrew the bolt. If the cube is too loose, it will be easier to turn, but pieces might pop out. Be careful not to make it too tight either.
You can also try "filleting" the cube's edges by sanding away at two faces that slide against each other to create a small gap between the pieces. This method should be used with caution as it can make the cube feel looser when reassembled. Another option is to use a lubricant like petroleum jelly between the cube's rotating layers to make them easier to remove.
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The mechanics of a Rubik's Cube
The Rubik's Cube is a 3D combination puzzle invented in 1974 by Hungarian sculptor and architecture professor Ernő Rubik. The puzzle consists of 26 miniature cubes, also known as "cubies" or "cubelets". Each of these has a concealed inward extension that interlocks with the other cubes, allowing them to move to different locations.
The puzzle's centre cube on each of the six faces is a single square facade, with all six affixed to the core mechanism. These centre pieces are held together by a centre spindle, allowing them to rotate but not change places. This means that the centre pieces will always be in the same place relative to each other. There are twelve edge pieces on a Rubik's Cube, each with two stickers from adjacent centres. No two opposite colours can be on the same edge.
The corner pieces, of which there are eight, have three stickers each, and the centres of these colours are all next to each other on the cube. Corners have three different orientations, so even if they are in the right place, they may be misoriented or "twisted". The pieces are organised into three layers, and any manipulation that changes the relative locations of these pieces is called a turn.
Over time, the plastic of the cube tends to wear down, leaving plastic dust inside the mechanism. Cubes can be lubricated to improve their performance, with silicone spray and oil being the best options.
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How to solve each side of a Rubik's Cube
Solving a Rubik's Cube can be challenging, but there are several methods that can help, especially for beginners. One of the most common methods for beginners is the Layer by Layer (LBL) approach, which involves solving each layer one by one. Here is a step-by-step guide to help you solve each side of a Rubik's Cube using the LBL method:
Step 1: Complete the First Layer Cross
The first step is to create a cross on the first layer, which will be the foundation for the rest of the solution. Look for the edge piece with two colours, typically green and white, and turn it so that the white side is on top and the green side is facing forward. Repeat this process for the other three edges until you have a white cross on top.
Step 2: Complete the First Layer Corners
Once the cross is complete, you need to position the corner pieces of the first layer correctly. This step may require some practice. You can do this by turning the top layer until the next corner piece to be rotated is in the top right position. Repeat the sequence until the side of the corner that you are rotating is on top.
Step 3: Complete the Second Layer
Now, move on to the second layer. This step may require some adjustments to ensure the first layer remains intact. The goal is to create a solid colour on the second layer, matching the centre colour of the adjacent faces.
Step 4: Complete the Third Layer Cross
After completing the second layer, focus on creating a cross on the third layer. This step is similar to the first layer, but you are now working with the top layer of the cube.
Step 5: Complete the Third Layer Corners
Finally, put the corner pieces of the third layer in their correct positions. If one corner piece is already in the correct corner but oriented incorrectly, you can fix it by performing specific sequences. Remember, solving the top row is often considered the hardest part, as it requires solving the adjoining row simultaneously.
It is important to note that there are various other methods for solving a Rubik's Cube, including speedcubing methods like the Fridrich Method. Additionally, solving a Rubik's Cube requires memorisation and practice, and you can always refer to online resources and tutorials for further guidance.
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The international debut of the Rubik's Cube
The Rubik's Cube is a 3D combination puzzle invented in 1974 by Hungarian sculptor and professor of architecture Ernő Rubik. The puzzle was originally called the Magic Cube and was licensed by Rubik to be sold in the UK in 1978 and then internationally in 1980.
The first test batches of the Magic Cube were produced in late 1977 and sold in toy shops in Budapest. The puzzle was held together with interlocking plastic pieces, which prevented it from being easily pulled apart. In February 1979, businessman Tibor Laczi took the Cube to Germany's Nuremberg Toy Fair, where it was noticed by Seven Towns founder Tom Kremer. They signed a deal with Ideal Toys in September 1979 to release the Magic Cube worldwide.
Ideal Toys wanted a recognisable name to trademark, and so the Magic Cube was renamed after its inventor in 1980. The puzzle made its international debut at the toy fairs of London, Paris, Nuremberg, and New York in January and February 1980. After its debut, the progress of the Cube towards toy shop shelves in the West was briefly halted so that it could be manufactured.
The Rubik's Cube became one of the most recognised icons in popular culture. It won the 1980 German Game of the Year special award for Best Puzzle. As of January 2024, around 500 million cubes had been sold worldwide, making it the world's bestselling puzzle game and bestselling toy. The Rubik's Cube was inducted into the US National Toy Hall of Fame in 2014.
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Frequently asked questions
A plastic cube puzzle is a 3D combination puzzle invented by Hungarian sculptor and professor of architecture Ernő Rubik. It was originally called the "Magic Cube" and was licensed by Rubik to be sold internationally in 1980.
The Rubik's Cube consists of 21 pieces: a single core piece made up of three intersecting axes that hold the six centre squares in place, and 20 smaller plastic pieces that fit into it. Each of the six centre pieces pivots on a fastener held by the centre piece, allowing the puzzle to be easily manipulated.
Ernő Rubik created the plastic cube puzzle in 1974 while working at the Department of Interior Design at the Academy of Applied Arts and Crafts in Budapest. He intended to use it as a teaching tool to help his students understand 3D objects and solve the structural problem of moving parts independently.
Solving the Rubik's Cube can be challenging, and most people can only solve one or two sides. There are many resources available, such as books and online tutorials, that provide step-by-step methods for solving the puzzle. Practice and memorization of algorithms can also help improve speed and efficiency in solving the cube.
The Rubik's Cube became a worldwide craze in the early 1980s, with an estimated 200 million cubes sold between 1980 and 1983. It has won multiple awards, including the German Game of the Year special award for Best Puzzle in 1980, and has been inducted into the US National Toy Hall of Fame in 2014. As of January 2024, around 500 million cubes have been sold worldwide.
