More from Chalkdust
Orbit crossnumber
Can you solve it?
How to make sci-fi fans angry
Follow these simple steps to frustrate anyone who ever dreamed of using their light saber on the USS Enterprise
What is the point of intersection?
Elizabeth A Williams falls off a log
What’s hot and what’s not, issue 08
Fashion is fleeting, Chalkdust regulars are not.
Christmas conundrum #3
Try our nonograms! And remember, not all puzzles have a unique solution...
Roots: Mary Somerville
Mary Somerville fights against social mores to become one of the leading mathematicians of her time.