I think I have the inheritance correct (it says to base it off of Task 2). It's the part about 2 checked and 2 unchecked I'm not following. Lesson 4 said the difference was basically the use of "throws" to designate which ones are checked and which are unchecked. I have specified that it throws two of them (it doesn't say which ones have to be thrown). The other tasks in this lesson were easy (including the "Medium" one), but this one has me utterly lost. I think I'm just not understanding the question.