The solution to Rubik’s cube relies on two main principles. Break the problem down into simpler subproblems. We chose the one dubbed layer by layer. To solve each subproblem, recognize the position, then alter the position to bring it one step closer to the solution. We already outlined a possible implementation of the first, as [...]
OK, dummy! You’re ready to uncover the marvelous secrets of the cube. You know I’ll be talking of moves, which are nothing more than lists of rotations, applied to any of the sides of the cube, rotations which can have a clockwise or a counter-clockwise direction. You already know the meaning of these terms, I [...]
Rubik’s cube is pretty simple, as you already know. So at first glance you may think there is little need, if any, to establish terminology. But before we start talking about the cube, we must decide on a common vocabulary, so that we can convey the information as intended. Terminology is important. And since I’m [...]