TSP solver wins $100k prize at Amazon's “Last Mile” ML Challenge (using no ML) (amazon.science)

Video explanation by the very entertaining Bill Cook from the winning team:

https://m.youtube.com/watch?v=vQMFVLa7yYQ

One peculiarity of the winning submission is that, in an ML challenge, they did not use ML at all:

https://mobile.twitter.com/alexkontorovich/status/1423259110...