More from Chalkdust
- David Sheard sets the third puzzle. Can you solve it?
- £100 of MathsGear goodies to be won if you can solve it
- David Sheard explores the rich mathematics and history behind the Apollonian packing, and the cover of issue 11
- Colin Beveridge looks at different designs for 2- and 3-dimensional tiles
- We have a go at the puzzles in Daniel Griller's new book
- Vote for your favourite colour of chalk for Issue 04: is it white, yellow, or the Post Office Tower?