Everyone has heard of the famous Königsberg bridge problem, where one must traverse all seven bridges and end up back where one started without traversing a bridge twice. This is indeed impossible, as dictated by Graph Theory.
However, loosening the restriction to we must traverse each bridge exactly twice, we see that it indeed becomes possible:
Image credit Jake Lai
So, is it possible, with these new rules, to successfully traverse through any set of paths (i.e graph)?