Starship: surprisingly good builders
More from Chalkdust
Christmas conundrum #3
Try our nonograms! And remember, not all puzzles have a unique solution...
Chalkdust’s Christmas conundrums
As the festive season strikes again, we'll be dishing out more fiendish puzzles – this time with prizes!
The croissant equation
Each time you eat a croissant you might be biting more than 500 layers of dough!
Thinking outside the box
Negative polygons and other mathematical creations
Christmaths carols II
Behind today's door... Another carol!
The Housekeeper and the Professor
Memory and maths in the modern world