An example of a checkerboard-style coloured doodle
More from Chalkdust
Once Upon A Prime
We review the third of this year's nominees for Book of the Year
Significant figures: Gladys West
Madeleine Hall looks at one of the minds behind GPS
Surfing on wavelets
Johannes Huber explores the maths behind how image compression works.
The simplest difficult task
Factorisation is often used in cryptography. But there's something even simpler which turns out to be just as hard.
The spider witch project
Constructing a spiderweb: in the spookiest and most horrific way possible!
Puzzles, Issue 04
Solve the puzzles that appeared in Issue 04.