More from Chalkdust
Should you buy a Valentine’s day present?
For those of you tackling this dilemma, here's your answer...
Binary magic card trick
Behind today's door... A binary magic card trick!
Killing by numbers: the mathematics of warfare
A blast from the past. Modelling battle grounds from ancient Greece.
Proof by storytelling
Sit in your favourite chair and do away with those tedious algebraic proofs
A counterintuitive result in the theory of traffic flow
Additional roads do not imply faster travel times!
Optimal Pac-Man
Matthew Scroggs spends too much time beating this arcade classic.