Going back to old exercises?

I want to go back and redo the exercises that I think I need a bit of a refresher on since I’ve been so busy. Is there any way to go back to an exercise and not have the solution already typed out? I tried to do it but it seems like the only way I can really do it is if i start completely over or if I make a new account?

edit: I know there is a “reset code” button, but what if I want to go back to a certain point and just continue from there? Do I have to click the reset code one every exercise?

Those solutions are loaded from local storage. If you empty it, you should get “fresh” exercises.