OK, I know the quote mentions judo and the sign in the picture says tae kwon do, but the magazine labeled the essay as Karate Nuns, so that's where I got the title.
Lara, #4 is wrong... but the picture I used as an illustration is not representative of the game. I think one difference had already been solved when I took the screenshot. Follow the link and you'll get to play screen after screen of these. The game actually moves while you're thinking! The game corrects a difference when you find one, and keeps count of how many differences are left.