More from Chalkdust
- Donovan Young looks at the shapes made when two cones collide
- We review the first of this year's nominees for the Book of the Year
- Kimi Chen deciphers the 1920s story you haven’t heard
- David Sheard explores the rich mathematics and history behind the Apollonian packing, and the cover of issue 11
- This year's Chalkdust puzzle Christmas card
- Does form going into the play-offs predict your success?