A comprehensive searchable database of Russian olympiad problems across many subjects with solutions.
Russian portal with mathematics textbooks, problem collections, and reference materials.
A collection of geometry competition problems from Russian mathematical olympiads.
Archive of problems and solutions from Russian mathematics olympiad competitions.
Russian-language archive of mathematics theory explanations and solved problems.
Problems from the Tournament of Towns mathematical olympiad, accessible to strong secondary and early university students.
Collection of problems from the Möbius math contest for students.
Saint Petersburg mathematics center providing lecture notes and teaching materials on mathematical methods and theory.
Aggregated physics and mathematics olympiad problems from regional and republican competitions in Kazakhstan.
Russian youth mathematics school site offering problems and materials; status and content unverified.
Russian portal for mathematics education containing problems, methodologies, and reference materials.
Archive of geometry olympiad problems for secondary school students.
Online archive of Moscow Mathematics Olympiad past problems.