History Of Appearance, Competition, Some Facts
The cube, as a puzzle and as a textbook for teaching students the basics of mathematical group theory, appeared in 1974 thanks to a Hungarian architect named Erno Rubik. He invented the 3x3x3 mechanical cube, familiar to everyone today. The most difficult thing was to come up with a mechanism that connected 26 cubes that form planes.
Interestingly, Rubik collected his creation for the first time for almost a whole month. Originally, the puzzle was called "Magic Cube".
Now international competitions are held in various disciplines related to the solving of both a 3x3x3 cube and other puzzles based on it. The world record for solving the Rubik's cube 3x3x3 as of 2020 was 3.47 seconds.
Interestingly, the number of all reachable different states of the Rubik's cube 3x3x3 is 43,252,003,274,489,856,000. Taking into account the orientation of the central squares, the number of states increases 2048 times, namely up to 88,580 102 706 155 225,088,000 states!
At the same time, there are algorithms when any, the most confusing Rubik's cube, can be collected in no more than 20 steps or moves. In this case, any rotation of the face is considered one move. Such algorithms are called "God's Number" or "God Algorithm".
The world record for solving the Rubik's cube in the minimum number of moves was set in 2019 at international competitions. The Italian Sebastiano Tronto solved the 3x3x3 Rubik's cube in just 16 moves!
Now that you have a cube, let's study its structure and language of algorithms in the next steps of learning.
Comments
Post a Comment