I disagree on this. Yeah it is super simple, but it will take you around 6 hours to pull this off. After dealing with the monotonous game play for an hour or two, you will understand that flipping the score is a test of extreme patience.
Monotonous, yes. But if it's doable by a 9 year old kid (me, in 1984) then it's one of the easiest games to roll over.