More from Chalkdust
Top Ten: Mathematical games
The undisputed chart of the best mathematical games this season
Issue 12
Independent Sage's Christina Pagel, hyperbolic mindfulness and make-your-own Markov tweet feature in our autumn 2020 edition. Plus all your favourite puzzles & columns.
Christmas conundrum #1
Solve this and you could be the lucky winner of a Chalkdust T-shirt
The Chalkdust Christmas card
This year's Chalkdust puzzle Christmas card
What’s your favourite shape?
Read ours then send us your favourites!
How to make: a Dear Dirichlet Valentine’s Day card
Make the perfect gift for your loved one