IM Mark Ginsburg continues his series on the effectiveness, and sometimes lack thereof, of computer analysis engines. As usual, Mark has done his homework to provide us with some well prepared material. Today's topic is seen through the "looking glass" of Theoretical Opening Preparation -- in particular, the Blumenfeld Gambit. This topical line has been frequented several times of late at the high levels of chess, but has white been consistently employing the best options? Watch and find out...