More from Chalkdust
Do the shuffle: finding π in your playlists
Henry Jaspars really likes Nick and Norah’s infinite playlist.
In conversation with Eugenia Cheng
We chat to the author of the best-selling book How to Bake Pi and pioneer of maths on YouTube
Going once, going twice… game theory?
A quick look at how to get the most bang for your buck the next time you're in a bidding war
Crossnumbers and cross products
A crossnumber clue takes us plunging headfirst towards projective geometry
Thinking outside the box
Negative polygons and other mathematical creations
Optimal Pac-Man
Matthew Scroggs spends too much time beating this arcade classic.