In the game, is to pass all of the conditions are turning into black and white checkered squares. The square is the starting point with a star, from the starting point to draw flop route, the route through the grid will flip once, will be translated into black and white, will be translated into black and white. Because many starting off more than one card, it might be the same grid flipped more than once, which is the brains of the game's most taken place, namely, how to set the right course flop so that all squares are ultimately translated into black. On the surface, this game is not too difficult, but in fact go through customs is not easy!