Ritangle 2021 took place 5 October – 14 December 2021, with over 700 teams taking part.
The winning team was from Altrincham Grammar School for Boys.
Ritangle is a competition designed for teams of students aged 16-18 who are currently studying either:
- A level Mathematics
- the International Baccalaureate
- Scottish Highers
- qualifications with equivalent content.
