More from Chalkdust
We don’t talk about the integers
Simone Ramello explores the hic sunt leones of the friendliest numbers we know...
A day in the life: statisticians
We talk to four statisticians working in different jobs across industry and academia
Will this article ever end?
Emilio McAllister Fognini explores the maths that made Turing so famous
Topological tic-tac-toe
Alex Bolton plays noughts and crosses on unusual surfaces
Advent Calendar: 24 December
It's the last day of the Chalkdust advent calendar, so there must be something very good behind today's door...
Christmaths carols I
Behind today's door... a mathematical Christmas Carol