Mahjongg Solitaire, also called Taipei or Shanghai, is an old chinese board game. The objective is to remove all 144 tiles from the board. There are six kinds of layer suit for play on iPad. The rules are simple: Starting from the sides, or from the central tile at the top of the pile, remove tiles by clicking on two equal symbols. If the tiles are identical, they will disappear. Removeable tiles always must be free on their left or right side. If a tile sits between two tiles on the same level, it cannot be selected.