More from Chalkdust
Chalkdust issue 21 – Coming 17 March
Pre-order your copy of issue 21 now!
Review: Power in numbers — the rebel women of mathematics
Celebrate International Women's day by reading about rebel women in mathematics!
Topological tic-tac-toe
Alex Bolton plays noughts and crosses on unusual surfaces
Curiouser and curiouser!
Some surprising mathematical facts
Problem solving 101
Never be stumped by a maths problem again, with this crash course from the ever-competent Stephen Muirhead
Hedy Lamarr: Hollywood star and secret inventor
James Grime gets intimate with 'the most beautiful woman in the world' from the golden age of Hollywood