==== Olympiad questions Compiled by Dr. Nikita Kalinin ====

[[http://mathcenter.spb.ru/nikaan/olympiad/problems2019eng.pdf|2019]]

[[http://mathcenter.spb.ru/nikaan/olympiad/problems2018eng.pdf|2018]]

[[http://mathcenter.spb.ru/nikaan/olympiad/problemseng.pdf|2017]]

==== Problems and Riddles Compiled by Dr. Renaud Detcherry ====

{{ :rd_problems.pdf |Problems}}