We must start and end at one of the bottom points
More from Chalkdust
Issue 09
Ride a phantom parabola into our spring 2019 issue. Billiards, maths, tiles, mistakes, plus all your favourite regulars.
What’s hot and what’s not, Issue 09
Fashion is fleeting, Chalkdust regulars are not.
Should you buy a Valentine’s day present?
For those of you tackling this dilemma, here's your answer...
Christmas cracker joke I
Behind today's door... a good joke!
Fractograms
Hugh Duncan explores the hidden patterns of fractions
For the love of puzzles
Pub ✕ maths = ?