https://web.mit.edu/sp.268/www/rubik.pdf

Introduction to Group Theory and Permutation Puzzles March 17, 2009

Introduction

Almost everyone has tried to solve a Rubik’s cube. The first attempt often ends in vain with only a jumbled mess of colored cubies (as I will call one small cube in the bigger Rubik’s cube) in no coherent连贯的 order. Solving the cube becomes almost trivial once a certain core set of algorithms, called macros, are learned. Using basic group theory, the reason these solutions are not incredibly difficult to find will become clear.

The Mathematics of the Rubik’s Cube

原文：https://www.cnblogs.com/chucklu/p/10536325.html