Tangram Master is another form of competitive tangrams, but is designed for four players and includes four very nice wooden sets of tans. Players compete simultaneously to be the first to solve the selected tangram. The book included in the game is spiral-bound so that it lays flat, and depicts each of 200 puzzles in four orientations, so all players can see it in its upright form. The book also includes historical information about tangrams, and some nice photos of old sets.