More from Chalkdust
- Venn diagrams, retrograde chess, and behind-the-scenes Christmas lectures all feature in our latest edition. Plus all your favourite puzzles & columns.
- Win a £100 Maths Gear goody bag by solving our infamous puzzle
- Football, telly and shape-shifting houses find their way into the prof's postbox this issue.
- Can you solve it?
- How did your favourite sweater become so big? And how big can it get?
- The definitive chart of the best waves