mahjong 21The answer is Gin. If you're looking for more puzzles, Mashable's got games now! Check out our games hub for Mahjong, Sudoku, free crosswordThe most common being the 3-tile-match mahjong or triple mahjong, and 3D mahjong. 3-tile match Triple Mahjong - This has the same rules as Mahjong solitaire regarding free tiles that