Sadly, Battle of the Sexes is almost certainly lost. I tried for years to track down former Multivision president Eugene Finkei, who supposedly kept the only known copy. I eventually was able to get in touch with his grandson, who confirmed that his grandfather passed away several years ago, as I had long suspected. Michael Case also confirmed that he long ago tossed anything he had related to the game (such as source code or graphic artwork). So at this point, it's highly unlikely we'll ever see this one.