il forum ufficiale delle olimpiadi della matematica
https://www.oliforum.it/
Inoltre tutti i numeri usciti fino al 2005 sono disponibili sul loro sito, quindi non dovresti avere problemi a farti un'idea.Crux Mathematicorum ha scritto: This journal (also called CRUX with MAYHEM) is an internationally respected source of unique and challenging mathematical problems published by the CMS. Designed primarily for the secondary and undergraduate levels, and also containing some pre-secondary material, it has been referred to as "the best problem solving journal in the world". All the problems and solutions are fully peer-reviewed for clarity, completeness and rigour by academic and professional mathematicians. Crux includes an "Olympiad Corner" which is particularly helpful for students preparing for math competitions.