In this episode, Rob and Andrew puzzle over black hats, mixed fruit and how to get into a football match. Or not. One of them takes a trip to Barnard Castle as they welcome special guest Sarah Leppard who is an optometrist. Or maybe optician. You'll have to listen and make up your own mind.
In this special edition of Puzzling Maths, Rob and Andrew give over a rather large percentage of their minutes to Anna Foster, co-presenter of BBC Radio 5 Live Drive.
She talks candidly about maths, what maths she uses in her work, how it is used by politicians, and much more.
Oh - and unsurprisingly - there are puzzles too.
Given that this is only episode 2 of Puzzling Maths, there is a 50% chance that it may well be the best episode Rob and Andrew have ever recorded.
It's definitely in the top two, at least.
We have more puzzles, the answer to last episode's date teaser, and some further fascinating maths from the real world, including darts, cricket, cycling and algorithms.
This, as the name suggests, was the very first episode (which partially explains why it sounds as though it was recorded in a broom cupboard), in which we introduce ourselves and why we started the Puzzling Maths podcast. We discuss a surprising application of Fibonacci numbers, and talk to special guest Shannon Fairchild about her experiences of maths at school and in the workplace.