Twixt on igGameCenter http://www.boardgamegeek.com/image/376757 3M catalog listing 1970 http://www.boardgamegeek.com/image/332661 Advert from 3M bookshelf game in-box advertising leaflet circa 1964 http://www.boardgamegeek.com/image/332244 3M set with diagonal guide lines added. All you need is an awl, a straightedge, and a neutral color pencil. http://www.boardgamegeek.com/image/268974 My son house rules... http://www.boardgamegeek.com/image/255660 Ursula overjoyed at winning a game against Dad http://www.boardgamegeek.com/image/233773 Homemade version with hand-drilled board! http://www.boardgamegeek.com/image/208729 Dutch box cover http://www.boardgamegeek.com/image/207830 Version marketed as Imuri http://www.boardgamegeek.com/image/197158 Overall shot http://www.boardgamegeek.com/image/193706 Spine of the 3M Bookshelf Game http://www.boardgamegeek.com/image/193705 Box front (german edition by schmidt international) http://www.boardgamegeek.com/image/172363 Mini-Twixt - Schmidt International edition (box cover) http://www.boardgamegeek.com/image/167084 T1j - a open source, java Twixt AI. http://www.johannes-schwagereit.de/t1j/index.html http://www.boardgamegeek.com/image/157700 http://www.boardgamegeek.com/image/146608