Here’s a coloured map with its capitals connected.
More from Chalkdust
Congruent Triangles
We review the seventh of this year’s nominees for the Book of the Year
Let them share cake
Or, how a simple problem can get very complicated, very quickly...
Solution to Christmas conundrum #4
... and the winners
In conversation with Bernard Silverman
We chat to the chief scientific advisor to the Home Office about the role of scientists and mathematicians in politics
Advent puzzles I
Behind the second door of the advent calendar, there is a puzzle
In conversation with Hannah Fry
On the mathematics of love, communicating maths to the public, and women in maths.