Can you reproduce this drawing?
More from Chalkdust
My secret
Julia Schanen hates being mistaken for a genius.
Issue 14
Venn diagrams, retrograde chess, and behind-the-scenes Christmas lectures all feature in our autumn 2021 edition. Plus all your favourite puzzles & columns.
Book of the Year 2019
We announce the winner of this coveted prize
My life with mathematical tattoos
... and how Chalkdust played a role in one of them
Crossnumber winners
Are you a winner?
Interstellar travel
Investigate the mathematics of wormholes