This is the twenty-second match in our group stage: from Group 2, it’s Marianne Freiberger and Rachel Thomas up against Jorge Nuno Silva. The pitches are below, and at the end of this post there’s a poll where you can vote for your favourite bit of maths.
Take a look at both pitches, vote for the bit of maths that made you do the loudest “Aha!”, and if you know any more cool facts about either of the topics presented here, please write a comment below!