For over a century, everyone believed that The Devil's Checkmate (1831), the famous painting by Friedrich August Moritz Retzsch, depicted the ultimate defeat of the human soul at the hands of the devil -- a dark scene with no apparent way out. But in 1888, chess champion Paul Morphy saw the painting... and noticed something no one else had. According to the story, he studied the board, analyzed the position of the pieces, and revealed that the young man wasn't lost after all -- he still had one move left. This discovery not only changed how we look at the...