Fun, free academic challenges for every student
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  • 70M users
  • 400K+ schools
  • 192 countries
Amt name
  • 25M students
  • 30 countries
  • 35 years

Enigma Challenge 2016

The Challenge is now over. Results will be posted soon. Thank you to all who participated!



Grades 3 - 12

and Algorithmic Thinking

Grades 5 - 12


Coming Soon!

For every

Register individually or through school.


Online, 2 Rounds.
Twice a year, 4 week window.

More than
a contest

Learn through the year. Great problems & resources.

Created by
the best

Meet our
Enigma Contest Panel.

Try a few problems

How Enigma Works

What is Enigma?
Enigma is a bi-annual series of online, academic challenges designed to be a fun way for students in grades 3 to 12 to learn core constructs in Mathematics, Computational and Algorithmic Thinking (CAT) and English without academic or peer pressure.

Who runs an Enigma Challenge?
Enigma is conducted in affiliation with the Australian Mathematics Trust (AMT), with a 35 year history of engaging 25 million students in over 30 countries, Edmodo (the world's largest social learning network with over 70 million register users in 192 countries), and a volunteer team of award winning educators and researchers. Meet our contest panel here.

What is Computational and Algorithmic Thinking (CAT)?
Computational and Algorithmic Thinking is a new literacy critical to success in coding, computer science and STEM. The CAT challenge introduces students to foundational computational thinking skills without requiring coding skills.

Who is eligible for Enigma?
All students in relevant grade levels are eligible to take part in the challenges - grades 3 to 12 for Mathematics, grades 5 to 12 for CAT, and grades 5 to 12 for English. There are no other selection criteria.

How do I register for Enigma?
Enigma supports group registration by schools and educators as well as individual registration by students and parents. Sign up here.

When is Enigma conducted?
Enigma is a bi-annual challenge conducted in March/April and October/November every year within a flexible 8-week window. The first Enigma Challenge is scheduled to begin in October, 2016.

What is the Enigma Challenge format?
Enigma is a 2-round, online, individual challenge conducted during a flexible 8-week window. Each round is 40 minutes. Round 1 is open to every student. Select round-1 participants are invited to Round 2. Both rounds are conducted within the 8-week window. Enigma is offered in 3 subjects - Math, Computational & Algorithmic Thinking, and English.


Enigma is designed to turn all perceptions of academic competitions about-face. It is affordable and accessible to all, a breeze to administer, expands beyond a traditional narrow focus, and is an experience all students can enjoy.” Mike Clapper, Executive Director of the Australian Mathematics Trust