The English version is on the way

RZB is a knowledge base for olympiad mathematics. Problems, books, worked solutions and where to start.

We are convinced that mathematics is a language we all share. A proof either works or it does not, and it reads the same in Moscow, Delhi or São Paulo. So we explain the mathematics first. Deadlines and admissions rules vary by country, but a solved problem belongs to anyone who understands it.

Русская версия