This game is based on the ancient Chinese game of Mahjong solitaire. The object of the game is to clear the board, which is filled with 144 tiles. Only two matching tiles positioned according to certain rules may be removed at any one time. YINCHENG contains a two- and a three-dimensional game variant, which differ in the rules, but hardly differ in the quality of play. YINCHENG is an ideal game for cold winter evenings, which will surely captivate everyone to the computer.