Snake-in-the-Box
I started working on the Snake-in-the-Box problem when I saw it featured in
xkcd #3125 back in August.
My latest results are in a paper available in PDF
at zenodo.org .
I might have the record length snakes in 11, 12, and 13 dimensions
but you can never know for sure. Someone could be working on the
problem alone and keeping results private for who knows what reason.
More to come on this page. Please check back.
xkcd image by Randall Munroe
license:
CC BY-NC 2.5