MIT has released MathNet, a database containing over 30,000 olympiad-level math problems and their verified solutions. The material comes from 47 countries, 17 languages, and 143 official competitions, and has been peer-reviewed. This makes it the largest and most rigorous public collection in the world for students and coaches.
How the open-access platform works 📚
MathNet indexes problems by difficulty level, mathematical topic, and source competition. Each entry includes the step-by-step solution, the original statement, and competition metadata. Unlike forums like AoPS, there are no unverified answers here: all content was extracted from official booklets and validated by an academic committee. The search function allows filtering by country, year, and problem type.
Goodbye to the excuse that the cat ate your notes 😼
If you used to console yourself by saying the problem was impossible because it didn't come with a solution, MathNet has ruined your alibi. Now you not only have 30,000 ways to feel incompetent, but they are also verified by experts. The only consolation is that if you fail, at least you'll know your mistake is official and not something made up by an anonymous forum user.