25 questions...
..one final challenge..
..and one winning team.


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

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.

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

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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