skip to content
Fri Dec 11th 2020, 9.00am to 11.00am

The Náboj competition will be held ONLINE on the 11th December 2020

We are extremely sorry that the Náboj competition could not take place on Friday 13th March 2020 due to the COVID-19 outbreak.

After many changes in plans, the international organising team has decided to hold an online version of the competition on Friday 11th December instead. 

We also hope to be part of the classic, in-person Náboj on 19th March 2021.

Náboj is a fast-paced, problem-solving maths competition for teams of five designed to promote mathematical ability, inventiveness, ingenuity and teamwork. Teams compete in three categories, Juniors, Seniors, and Open. Students participating in Junior category must be in Year 12 or below. The Senior category is open to all secondary-school students, and also those who graduated from secondary school in the academic year 2019/20. The Open category has no limitations whatsoever.

The teams of five have two hours to complete as many problems as possible. The competition will take place simultaneously in Great Britain, the Czech Republic, Slovakia, Germany, Austria, Switzerland, Poland, Hungary, Romania, Russia and Ukraine. In each of these countries there will be a national leaderboard ranking individual teams, and students will also be able to compare their performance in the international ranking.

The Náboj competition is designed to give an opportunity to apply your mathematical knowledge to solve a range of interesting and challenging problems. It encourages and rewards teamwork and co-operation, and provides an exciting and fun opportunity to test and stretch your problem-solving skills.

More details and FAQs

Members of a single team do not have to be in the same room/building during the online competition, and they do not have to be supervised by a teacher.

For more information about Náboj, including the rules and sample problems from previous years, visit or contact us on

How to enter

Registration for the online competition opens on Monday 16th November 2020 and will close three days before the competition.

Entry to the competition is free but teams must register in advance using the online registration form.

Schools are welcome to enter teams of 5 students.

If you have any questions, please contact us via the email address