More from Chalkdust
Crossnumber winners, Issues 20–22
Did you solve it?
Top Ten: Calculator buttons
The definitive chart of the best buttons
(Not) squaring the circle
Sam Hartburn attempts the impossible
Counting Countdowns
Colin counts Countdown's contingent of conundrum causing calculations
My mathematical trajectory
Stories and lessons on diversity in mathematics from a globe-trotting number theorist.
Chalkdust Issue 05 coming 7 March
Free launch party, 7.15pm. Come along! Free copies of Chalkdust, free pizza, and buy your own Chalkdust T-shirt.