Try to create the following special tiles whenever possible as these will make completing your objective easier. Combining four tiles in a line will create a special frosting tube that can wipe out a whole row or column. Combining four tiles so they form a square will enable you to wipe out a random tile of the same colour when the special tile is tapped. Another special tile that is useful when you need to collect a certain number of one kind of cake is to combine five tiles in a row so they lead to a special rainbow star as this tile will wipe out one type of cake. It is also possible to combine special tiles with other special tiles to create even more special bonuses.