Simple premise:
You control a square which can move around the screen.
Your goal is to move out of the top left corner and after, without triggering btnp(), get back into the top left corner.
Sounds simple enough.
In fact, I will even let you look at the code!
It is very difficult, so I made an easier version of it for you to try out first.
You will need to download the cart to solve the challenge.
Call the function and as the argument use the table:{x=0,y=0} or {y=0,x=0};
Modify the _draw() function like so:
Type resume and hit enter.