The game is a very interesting puzzle. The basis of the original decision, you need to walk the ball in such a way to get rid of all the cells. As soon as the ball will fall into the cell, it immediately disappears after the movement of the ball. In each level there is a finite cell, it is in it you have to stay at the end of the level by getting rid of all the others. This game requires precision and cold calculation, one wrong move, and you can replay the round. Some cells are strengthened, they need to come twice, so they disappeared.