MahJong Ace - new MahJong Solitaire You have to match tiles in pairs until all of the tiles are gone. Once two tiles have been matched, they will disappear from the board. When you click on a tile - it becomes highlighted. In order to select a tile, it must have at least one side edge free - no other tiles touching it, and cannot have any tiles on top of it. You can choose from 7 different Tile Sets.