RBK'S cube is a game that demands high imagination.
This application is a tutorial to solve the 2x2 cube problem, especially for beginners or if you just want to learn it.
This application only explains for beginners, when you want to become an expert. You need a routine and practice.
You can download the free 2x2 cube rbk tutorial for free.
This application uses English, but you can still understand if you look at the notations and algorithms that have been listed.