The unexpectedly hard windmill question (2011 IMO, Q2)
3Blue1BrownThe famous (infamous?) "windmill" problem on the 2011 IMO Help fund future projects: / 3blue1brown An equally valuable form of support is to simply share some of the videos. Special thanks to these supporters: http://3b1b.co/windmillthanks Home page: https://www.3blue1brown.com The author of th