More from Chalkdust
- We talk to the Fields medallist about his life, his work and his advice to his younger self.
- Alex Bolton plays noughts and crosses on unusual surfaces
- Win £100 of Maths Gear goodies by solving our famously fiendish crossnumber
- We feel underdressed for Breakfast at Villani's
- The definitive chart of chalk's greatest colours
- How many points could you have scored at our launch quiz?