Ritangle - an Integral maths competition

Congratulations!

We are delighted to announce that the winning team of Ritangle 2019 is from King Edward VI School, Stratford-upon-Avon.

Their fully correct answer to the final question and tiebreaker was submitted on Tuesday 10th December. Once again, Ritangle was challenging and this is a magnificent achievement!

Full solution to Ritangle 2019.

Thanks to all the students who took part and the teachers supporting them.


Winning School, Ritangle 2019	King Edward VI School, Stratford-upon-Avon
Fully correct answers, including the final question tiebreaker, also received from	Abingdon School Aquinas College Barnard Castle School Bartholomew School Beauchamp College The Blue Coat School The Broxbourne School The Castle School City of Norwich School Claremont Fan Court School Colchester County High School for Girls Cotham School Denbigh School Dr Challoner's Grammar School The Duchess's Community High School East Norfolk Sixth Form College The English School, Nicosia Herschel Grammar School Hills Road Sixth Form College The Judd School King Edward VI College, Stourbridge King Edward VI School, Southampton King Edward VII School, Sheffield The Latymer School Manchester Grammar School Mearns Castle High School Northampton School for Boys Oxford International College Peter Symonds College Queen Elizabeth's School, Barnet Queen Mary's Grammar School, Walsall Royal Grammar School High Wycombe Royal Masonic School For Girls Saffron Walden County High School Solihull School St. Olave's Grammar School Taverham Sixth Form The Thomas Hardye School Thurston Community College Tonbridge School Upton Court Grammar Wath Academy The West Bridgford School Wirral Grammar School for Girls

Winning School, Ritangle 2019

King Edward VI School, Stratford-upon-Avon

Fully correct answers, including the
final question tiebreaker, also received
from

Abingdon School

Aquinas College

Barnard Castle School

Bartholomew School

Beauchamp College

The Blue Coat School

The Broxbourne School

The Castle School

City of Norwich School

Claremont Fan Court School

Colchester County High School for Girls

Cotham School

Denbigh School

Dr Challoner's Grammar School

The Duchess's Community High School

East Norfolk Sixth Form College

The English School, Nicosia

Herschel Grammar School

Hills Road Sixth Form College

The Judd School

King Edward VI College, Stourbridge

King Edward VI School, Southampton

King Edward VII School, Sheffield

The Latymer School

Manchester Grammar School

Mearns Castle High School

Northampton School for Boys

Oxford International College

Peter Symonds College

Queen Elizabeth's School, Barnet

Queen Mary's Grammar School, Walsall

Royal Grammar School High Wycombe

Royal Masonic School For Girls

Saffron Walden County High School

Solihull School

St. Olave's Grammar School

Taverham Sixth Form

The Thomas Hardye School

Thurston Community College

Tonbridge School

Upton Court Grammar

Wath Academy

The West Bridgford School

Wirral Grammar School for Girls

Ritangle is a competition for teams of students of A level Mathematics, the International Baccalaureate and Scottish Highers

No knowledge of mathematics beyond A level Mathematics required

The first twenty five questions have now been released and can be seen below.

Correct answers to these questions are needed to solve the final question.

The final (multi-part) question was made available at 4.00pm on Tuesday 10th December 2019.

A maths hamper, including a free year long subscription to Integral, and trophy for the school or college of the winning team! Many thanks to Maths Week England, Hodder Education, Kit Yates, Alex Bellos, Rob Eastaway and Bobby Seagull for donations to the hamper.

Technology can help with some Ritangle questions

Some Frequently Asked Questions about Ritangle

Registration and entries for Ritangle are now closed.

Full solution to Ritangle 2019.

Registration and entries are now closed.

Thanks for supporting
Ritangle 2019!

Many thanks to all those who have contributed to Ritangle's maths hamper prize!

Ritangle 2016 Questions

Ritangle 2016 Answers to questions 1 to 22

Ritangle 2017 Questions

Ritangle 2017 Answers to questions 1 to 20

Ritangle 2018 Questions

Ritangle 2018 Answers to questions 1 to 25

Download a classroom poster about Ritangle

First, please read the rules of the competition. Team captains need to register their team take part in Ritangle. It is essential that a team is registered to be able to submit answers to the final question. The rules describe the role of the Nominating Teacher - in particular the Nominating Teacher needs to be available to be contacted on 16th and 17th December 2019.

Team Captain Name:

Captain's E-mail:

Team Name:

School/College name:

Nominating Teacher Name:

Nominating Teacher Email:

I agree to the competition rules as stated here and that the nominating teacher may be contacted, only in relation to this competition, via the e-mail address provided. The captain's e-mail address will only be used to send e-mails in response to answer submissions via forms on these pages. E-mail addresses provided will not be passed on to any other organisation or used for any purpose other than this competition.

Data Privacy

The information you provide here is being collected by MEI.

MEI value the privacy of your personal data. Please see MEI’s Privacy Notice. This explains how we collect, store and handle your personal data.

The Ritangle 2019 final question starts here!

We've had some enquiries about the #ritangle final question tiebreaker. We'll accept the answer based on the number of distinct unclear dates OR that based on the number you would get where if an unclear date was printed 3 times (for example) it would contribute 3 to the count.

Please download and read this document: Full Instructions for the Final Question

Final Question information release

Answers to parts of the final question, including the Starter, can be input to release further information about the final question via the link below. Answers to questions 1 to 25 can still be checked,

Please don't share correct answers with anyone outside of your team.

Submit your entry for Ritangle 2019

Teams should only use the form below once they are ready to make a complete submission of their answer to the final question. The link above should be used to release clues and information about the final question. Only submissions to the form below count as entries for the competition.

...then submit your answer to the preliminary round to unlock a clue!

Once you have registered your team (complete the form and submit your registration using the 'Register your team' button) you may submit an answer to the preliminary round below. The captain's e-mail address is required again so we can check your team has been registered.

The answer to the preliminary round is a string of 18 digits. The first two digits of this string are the position in the alphabet of the answer to preliminary question A. The other 16 digits are as described in preliminary questions B to E.

Captain's E-mail:

Answer: (18 digits left)

When you submit an answer an e-mail will be sent to both the team captain and the nominating teacher. For correct answers this will contain a clue for the main competition. If your answer is incorrect then you can try again. You don't need the clue to solve the main competition.

Follow the instructions carefully to get the final answer for each question, particularly in relation to rounding. These are needed for the final question which will be released at 4.00pm on Tuesday 10th December.

Keep you answers safe for now. Please don't share answers outside of your team; others are having fun finding them!

Corrections, clarifications and advice for Ritangle 2019.

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