The International Mathematical Olympiad brings together selected national delegations to solve challenging mathematical problems. Participation begins with a country’s recognised selection programme, not a public application to the international final.
The competition at a glance
- Up to six contestants in each national delegation.
- Six problems over two competition days.
- Three problems in a four-and-a-half-hour session each day.
- Each problem is worth seven points; the maximum total is 42.
- Written proofs and justifications are central to scoring.
The annual and general regulations govern participation and conduct. Read the official regulations.
From local entry to international team
Most programmes begin with accessible school, regional or national competitions. Strong results can lead to further rounds, camps and selection tests. The exact route, exceptions and timing depend on the country. Some training cycles span more than one school year.
Four mathematical fields
Preparation centres on algebra, number theory, geometry and combinatorics. Problems use pre-university mathematics but demand creativity and complete reasoning. The challenge is applying familiar ideas in unfamiliar ways.
Your next step
Find your country’s selection guide, check its current entry conditions and start practising at the level of its first round.
Country pathways
Find the recognised national organiser and first competition.
Explore guide COMPETITIONFormat and scoring
Understand the two papers and proof-based marking.
Explore guide CHECK FIRSTEligibility
Separate international rules from national entry conditions.
Explore guideCommon next questions
How do I qualify? · Where are the past papers? · Where are previous results? · Is this the same as SOF IMO?