Mahjong Solitaire is a category of games inspired by the classic Chinese Mahjong. Except the fact that it uses the same tileset as the original mahjong game this type of games has more characteristics of the solitaire cards games like Spider Solitaire and even closer of Pyramid Solitaire. In Mahjong Solitaire games the mahjong pieces are arranged in different formations and you can remove only one pair of identical pieces (or very similar pieces). Any piece can be removed if it’s not covered by another one or if it’s not surrounded by other pieces. The goal of the game is to remove all the pieces in the game. All that set, Mahjong Solitaire games are concentration and attention games and they are not so complex as the classic mahjong games.