Dont have wonderboy III. Sorry. Found this fucking awesome site where some guy beats super mario 3 in 11 mins. Has a bunch of other games on it too, most for nintendo. Guy beats zelda in 26 fuckin mins. It will make you sick about your game playing abilities. (at least it made me sick about mine)
http://bisqwit.iki.fi/jutut/nesvideos/
http://bisqwit.iki.fi/jutut/nesvideos/