Toy
Rubik
わたしわ Tuat です
Today, I introduce you a toy that I very love, it called Rubik.
Rubik is a mechanical puzzle game invented by a Hungarian architect, sculptors Ernő Rubik in 1974. The common wrong names of this game are Rubix, Rubic and Rubick.
Each side of this version has 9 squares and is painted in one of six different colors, usually white, red, yellow, orange, green and blue (some blocks replace the white side by color black). The problem starts with shuffling all the squares on each side, ie alternating colors. The problem is solved only when each side of the block is a uniform color.
A standard Rubik's cube (3 × 3 × 3) can have 8! the arrangement of blocks in the corner, 7 blocks can be rotated arbitrarily because the dimension of the 8th block depends on the remaining 7 blocks; create 3 permutations. The blocks at the edges have 12! / 2 permutations. View the dimension of a block at the edge is fixed, the dimension of 11 blocks can be independent of each other; create 2¹ permutations. The total Rubik's cubes have:
4.33*10^19 ~ 43.252.003.274.489.856.000 permutations.
I will guide you to resolve the rubric block 3x3x3 in the upcoming article.
Wish you have a nice weekend.
