Ritangle 2020 took place 5 October - 15 December 2020.
Ritangle is a competition designed for teams of students aged 16-18 who are currently studying either:
For more information about Ritangle, please visit our information page.
Congratulations to the winning team from
The Cherwell School, Oxford
The team from King Edward VI School, Stratford-Upon-Avon were runners up. They also produced some excellent work in stage 3 of the final question.
Teams from the following schools also reached stage 3 of the final question. Less than 5% of the teams that entered achieved this in a very challenging Ritangle 2020. Congratulations to all the schools and colleges below:
Released: 0900 GMT, 10th December 2020
In the long string of numbers formed from the answers to questions 1 to 24 you should see lots of 1 and 2 digit primes. Now think how that might be a code.
Released: 0900 GMT, 11th December 2020
From questions A to H you have another string of digits with lots more 1 and 2 digit primes in there. But this time the code is harder. Look back at all those names in questions 1-24 and A-H. They were chosen for a reason.