The total number of changes in the Rubik's Cube

Third order Rubik's Cube variation number The commonly referred to Rubik's Cube refers to a third-order Rubik's Cube, which is a 3x3x3 cubic structure composed of 26 color blocks. The third order Rubik's Cube has a total of 43252003274489856000 ≈ 4.3 × 1019 changes through rotation. The principle of the number of changes for a third-order Rubik's Cube is as follows: 8 corner blocks: can be swapped positions (8!) or flipped directions (38), but cannot flip a single corner block (1/3) separately, so there are 8! 37 variations. 12 edge blocks: can be swapped positions (12!) or flipped directions (212), but cannot swap a pair of edge blocks (1/2) separately, nor can a single edge block (1/2) be flipped separately, so there are 12! * 212/(2x2) variations. 6 central blocks: fixed and not movable. In summary, there are several changes in the third order Rubik's Cube.

2024-03-25

Common Terminology of Rubik's Cube

Order N: Order refers to the number of blocks shared by two adjacent rotating surfaces in the main body of a Rubik's Cube. For example, a third order Rubik's Cube has three small blocks on each side, and a pyramid Rubik's Cube has five adjacent rotating surfaces, but the main body only has three blocks in total, so it is also a third order Rubik's Cube. Restoration: refers to the process in which a Rubik's Cube moves from a non original state to its original state. SUB: The original text is "Subtraction", which means "less than or less than", and here it means "below XX seconds". Example: 3 x 3 square SUB30 refers to an average speed of less than 30 seconds. The calculation method is to remove the fastest and slowest scores after 5 timed restores and take the average. DNS: The abbreviation for "Did Not Start" refers to giving up a recovery opportunity and not starting the recovery, that is, abstaining before starting. DNF: Abbreviation for "Did Not Finish" refers to a participant who feels that they are unable to complete the Rubik's Cube within a satisfactory time and declares a waiver, or the Rubik's Cube fails to recover when the timer is pressed. Only one DNF (considered the worst result) is allowed in the average of five de tailed competitions. If there are more than two DNFs, the average score of the project is DNF. WCA: World Cube Association, founded in 2003, primarily dedicated to hosting Rubik's Cube Speed Twist competitions. The results of the 1982 World Rubik's Cube Championship held in Hungary were also recognized by WCA. CFOP: The abbreviation for Fridrich Method. The processes are Cross, F2L, OLL, and PLL, with the first letter of each step taken as the abbreviation. Cross: A cross. Refers to restoring the four underlying edges in the Fridrich Method or layer prior method. F2L: Abbreviation for First Two Layers. Using the Fridrich Method to simultaneously restore the first and second layers of the Rubik's Cube. OLL: Abbreviation for Orientation of Last Layer. The method of using Fridrich Method to restore the color of the third layer of Rubik's Cube. PLL: The abbreviation for Permutation of Last Layer. The method of using Fridrich Method to restore the position of the third layer of the Rubik's Cube. Lucky Case: Refers to the process of restoring a Rubik's Cube, where a certain step does not need to be restored and fortunately jumps to the next step automatically. Lucky Time: Refers to the time it takes to restore a Lucky Case. PB: Abbreviation for Personal Best. The fastest time to restore a personal Rubik's Cube. POP: The abbreviation for POP up. During the restoration process of the Rubik's Cube, parts such as edges and corners detach and fly out. If it occurs during a competition, it is considered an invalid recovery process. BLD: Abbreviation for Blindfold Cubing. First look, then twist. The timing starts from the first sight of the Rubik's Cube, and then memory is performed. After memory is completed, twist the Rubik's Cube blindly. Scramble: Disrupt the Rubik's Cube. UWR: Abbreviation for Unofficial World Record, an unofficial world record. LBL: Abbreviation for Layer By Layer. The finger layer method, also known as the "seven step method" in some places. WR: World Record NR: National Record AsR: Asia Record CR: Continental Record FSC: The abbreviation for Finger Short Cut. It refers to a set of rotational movements commonly used in formulas, such as R U R'U '. CZZ: Two versions: ① Disassemble and reassemble pinyin abbreviations; ② Cross (cross)+ZBLS (complete the top cross at the same time as the last group of f2l)+ZBLL (align the top edge blocks and color of the top corner blocks). PSC: A pre prepared restoration challenge.

2024-03-25

The Development History of Rubik's Cube

Rubik's Cube, also known as Rubik's Cube, was originally a mechanical puzzle toy invented by Professor Erno Rubik of the Budapest School of Architecture in Hungary in 1974. Rubik's Cube has various gameplay modes such as racing, blind twisting, and single twisting, and its popularity has not declined. It holds various competitions every year, making it one of the most popular puzzle games. In the usual sense, the Rubik's Cube refers to the narrow definition of a third-order Rubik's Cube. The shape of a third-order Rubik's cube is usually a cube, made of elastic hard plastic. The conventional racing gameplay is to disrupt the Rubik's Cube and restore it in the shortest possible time. The generalized Rubik's Cube refers to various geometric entities that can be disrupted and restored by rotation. Rubik's Cube, along with Huarong Dao and the French single aristocrat (Independent Diamond Chess), are collectively known as the three incredible puzzles in the intellectual gaming world.

2024-03-25

What are the benefits of playing Rubik's Cube? Who is suitable for learning Rubik's Cube

1、 Learning Rubik's Cube is beneficial for training hand eye coordination and improving memory The restoration process of Rubik's Cube is a process of observation, action, and individual thinking. In the process of rapid recovery, it is necessary to maintain high concentration, coordinate hand movements, and high-speed thinking. The cultivation of Rubik's Cube is the sharpening of willpower, which has the general characteristics of competitive sports and requires extremely high thinking ability. Rotating the Rubik's Cube mostly involves finger movements, and these limb movements have a promoting effect on internal circulation throughout the body, which is beneficial for health. 2、 Learning Rubik's Cube is beneficial for cultivating children's concentration Rubik's cube plays an important role in shaping good thinking patterns and habits in children. Firstly, Rubik's Cube can exercise children's finger flexibility and achieve intellectual development in the process of hand brain coordination. Secondly, Rubik's Cube can cultivate children's memory. During the Rubik's Cube repair period, children need to remember a series of restoration formulas, and more restoration can sublimate children's linear memory into muscle memory. In his mind, every step of recovery became a subconscious action. 3、 Learning Rubik's Cube is beneficial for children's understanding of spatial knowledge The inventor of Rubik's Cube was a university professor, and his first wish for inventing Rubik's Cube was to help students understand the composition and structure of spatial Rubik's Cube, and to exercise their spatial thinking and memory abilities.

2024-03-25

Where is the charm of Rubik's Cube

The charm of Rubik's Cube is that it is not only a tool for entertainment and intellectual challenges, but also a multi-level and multi-dimensional experience. The following are several aspects of the charm of Rubik's Cube: Exercise hand brain coordination skills. The rotation of the Rubik's Cube requires rapid processing of color and shape information, as well as guidance for hand operations. This combination of hand and brain use can stimulate cortical activity, improve thinking agility and logical reasoning ability. Enhance spatial thinking ability. A Rubik's Cube is a three-dimensional toy that requires understanding and mastering spatial structure. In the process of restoring a Rubik's Cube, it can enhance spatial thinking ability, which is helpful for learning mathematics and other fields. Cultivate patience and perseverance. Successfully restoring the Rubik's Cube requires a lot of time and energy. Perseverance and effort in the face of difficulties and setbacks can cultivate patience and perseverance. Improve problem-solving skills. In the process of solving the Rubik's Cube problem, one can enhance their problem-solving ability and have more confidence in facing challenges in life. Enhance self-confidence. Successfully restoring the Rubik's Cube can bring a strong sense of achievement and enhance self-confidence. Rich imagination. The rotation of the Rubik's Cube stimulates imagination and helps to conceive various possible situations. Promote communication and cooperation. Playing Rubik's Cube with friends can enhance friendship and understanding, and improve social skills. Increase interest in mathematics. The Rubik's Cube involves rich mathematical principles such as geometry, probability, and combination, which can stimulate interest in mathematics. A symbol of wisdom. Rubik's cube is one of the three major intellectual toys in the world, known as the "most educational toy invented to this day.". Simplicity rather than simplicity. Clever structure and diverse types, suitable for people of different ages and abilities to learn. Challenging and unknown. The changes in Rubik's Cube are diverse and challenging, inspiring a desire for exploration and adventure. In short, Rubik's Cube is not only an entertainment tool, but also an excellent way to comprehensively enhance personal abilities, cultivate problem-solving skills, and innovative thinking.

2024-03-25

Rubik's cube tutorial formula mnemonic seven steps

The seven steps of the formula mnemonic in the Rubik's Cube tutorial are as follows: Bottom cross. The purpose of this step is to correctly position the four corners of the bottom surface and form a cross shape on the bottom surface. Formula: Bottom right, top right, front left, top left, front right, top right (180 degrees), bottom right, top right, front left, top left, front right, top right (180 degrees). Bottom corner block. In this step, return the four corner blocks on the bottom surface and adjust the position of the edge corner blocks. Formula: Bottom right, top right, front left, top left (180 degrees), front right, top right (90 degrees), bottom right, top right (clockwise rotation 90 degrees), front left (clockwise rotation 90 degrees), top left (clockwise rotation 90 degrees). Middle layer edge block. This step aims to reposition the four edges of the middle layer and adjust the position of the corner blocks again. Formula: Top right (90 degrees), bottom right (90 degrees clockwise), top right (90 degrees clockwise), top right (90 degrees clockwise), bottom right (90 degrees clockwise), and top right (90 degrees clockwise). Top cross. In this step, it is necessary to form a cross shape on the top surface and reposition the four corner blocks on the top surface. Formula: The corresponding formula can be selected according to the actual situation. Top corner block. The purpose of this step is to reposition the four corner blocks on the top surface while adjusting the position of the edge corner blocks. Formula: The corresponding formula can be selected according to the actual situation. Top edge block. In this step, the four edge blocks on the top surface need to be repositioned and the position of the corner blocks needs to be adjusted again. Formula: The corresponding formula can be selected according to the actual situation. The last layer of edges. The final step is to reposition the edges of the last layer, thus completing the restoration of the entire Rubik's Cube. Formula: The corresponding formula can be selected according to the actual situation.

2024-03-25

What are the precautions for the third level Rubik's Cube competition

In the competition, participants need to focus their attention and constantly observe the changes in the Rubik's Cube in order to make timely adjustments. At the same time, participants also need to master certain skills and techniques, such as quickly rotating the Rubik's Cube, mastering formulas, etc. Summary: The rules of the third level Rubik's Cube competition include Rubik's Cube standards, competition time, disrupting Rubik's Cube, ranking methods, and violations. Participants need to abide by the rules and master certain skills and techniques in order to achieve good results in the competition. Through the introduction in this article, readers can better understand the rules of the third-order Rubik's Cube competition, as well as further understand the gameplay and skills of Rubik's Cube.

2024-03-25

Third Order Rubik's Cube Competition Rules

Third Order Rubik's Cube Competition Rules Third order Rubik's Cube is a popular puzzle game, and as more and more people join the Rubik's Cube community, Third order Rubik's Cube competitions have become increasingly popular. This article will introduce the rules of the third-order Rubik's Cube competition to help readers better understand this game. Expand Description: The rules of the third-order Rubik's Cube competition include the following aspects: 1. Rubik's cube standard: The third-order Rubik's cube used in the competition must comply with international standards, with a side length between 5.5-6.0 centimeters. 2. Competition time: The usual competition time is 5 minutes, and the referee will count down. When time runs out, participants must stop restoring the Rubik's Cube. 3. Disrupting Rubik's Cube: To ensure fairness in the competition, it is necessary to randomly shuffle the Rubik's Cube before the competition, usually using the official shuffling program of WCA. 4. Counting method: The referee will record the best and second best scores of each participant, and the final score will be the average of the two. If there are tied scores, the ranking will be determined by comparing the third or fourth scores of the contestants. 5. Violation: During the competition, it is prohibited to use illegal means, such as using clips, magnets, etc. Participants must abide by the rules, otherwise they may be disqualified from the competition.

2024-03-25

What is a Rubik's Cube?

Rubik's cube is a classic intelligence game, usually composed of small blocks of different colors, which are restored to specific shapes or states according to certain rules through actions such as rotation and flipping. There are various types of Rubik's Cubes, including traditional third-order Rubik's Cubes, Alien Rubik's Cubes, Mirror Rubik's Cubes, and so on. It varies in difficulty and is suitable for players of different age groups to challenge. Rubik's cube games can exercise people's spatial imagination, logical thinking ability, and problem-solving ability, making them a very popular intellectual competition activity. Meanwhile, Rubik's Cube is also a highly challenging entertainment activity, providing people with fun and opportunities to challenge themselves.

2024-03-25

Don't let vulgar toys erode childlike innocence

A few days ago, there was a news that accidentally discovered that a 10-year-old child had started smoking. When the child is doing homework, he is holding a cigarette in his mouth, the cigarette butt flickering and the smoke is even spewing out of his mouth. His family was very shocked and asked him why he started smoking at a young age. But the child, with an innocent expression, said that it was not a cigarette, but a fruit flavored "toy cigarette" that he bought at the stationery store near the school gate. Many boys in the school like to buy this kind of thing and "think it's cool" It should be said that children living in today's era, especially those in cities, are mostly only children. They are all treasures in the hands of the family, and can be said to be extremely happy, having whatever they want. This is based on the widespread love and indulgence of parents towards their children nowadays. The manufacturers and sellers of children's toys are committed to exploring and expanding the children's toy market in order to maximize their business efficiency. They can be said to use all means and methods, and some so-called "adult", "violent", and "vulgar" toys aimed at children pursuing novelty and excitement are so grandly introduced, tempting children with weak discernment ability and fragile self-control to buy and play. It is natural for children to love toys. Good toys can develop their intelligence, cultivate their character, and motivate them to be positive and upward. However, it should be noted that these adult, violent, and vulgar toys often regard hiding dirt and grime as avant-garde and vulgarity as unconventional, which can easily affect children's physical and mental health. It is not difficult to imagine that when young children immerse themselves in these so-called "advanced and novel" toys, they will unconsciously lead them into another "bad environment". In a subtle way, their young minds will be eroded by the terrifying, bloody, vulgar, and ugly "toy culture", and thus prematurely lose that beautiful childlike innocence. To keep children away from vulgar toys, it requires the participation and cooperation of all sectors of society. Schools and families should strengthen publicity and education for students, improve their cognitive and discriminative abilities, and consciously resist these vulgar toys; The departments of industry and commerce, quality supervision, etc. should strengthen the supervision of shops around schools, increase the inspection of "three no" products, take strong measures, and cut off the production of vulgar toys from the source; The cultural department should implement a "grading" system in the toy market as soon as possible, classify adult toys and children's toys, and prohibit arbitrary sales. Serious investigation and punishment should be imposed on toy merchants who sell toys containing elements of violence, pornography, superstition, etc. to children. As long as we work together in multiple ways to guide and educate children to stay away from vulgar and negative information pollution, we can purify the school atmosphere and promote healthy growth of children. Don't let adult, violent, and vulgar toys erode the pure and flawless childlike hearts.

2023-12-28