文档介绍：魔方
Magic Cube
There are 26 blocks in a three-order magic cube , while it can offer *10^19 likelihoods(可能情况).
So even you can make three turns per second, it will take billions years to ergod (遍历) all the likelihoods!
We have long heard about the magic cube. But can you solve it now ?
Some guys just can solve such a Rubik’s Cube(三阶魔方)  in less than one minute , even with their eyes closed. Are they really so smart ?
And how to solve a Rubik’s cube ?
Somebody is confused by such a Rubik’s cube. Why ?
Because we are not mathmaticians ( 数学家).
Solves are calculated and given by Mathematics.
Players need only remember some formulas (公式).
So not the players but the mathmaticians are truly smart.
With some formulas as follows, you can also solve it easily!
Step 1: Remember the Marks
F: front side turn clockwisely once (顺时针转)
F’: front side turn anticlockwisely once(逆时针转)
B: back side turn clockwisely once (顺时针转)
B’: back side turn anticlockwisely once (逆时针转)
F2: front side turn clockwisely twice (顺时针转)
So the others are the same:
R: right side L:left side
U: up side D: down side
Step 2: Remember the formulas
Then we make the first and the second floor in right order
左换位:U’L’ULF’LFL’
右换位:URU’R’FR’F’R
上顺上顺上顺顺下顺下顺