When you're really decided what you are going to try their hand at the game, then of course, that you become clear if and to the difficulties they will definitely need to be overcome, and it must be done in such a way that would not get into a dead end, and do not lay your hands. After all, every time you will need to try what the obstacles as they go through and overcome, and let all you get as much as possible and correct. Here's a game.