The IMO Compendium

Problems From Olympiads

Problems from previous national and international math olympiads. (click here)

This book contains all available problems proposed to the International Mathematical Olympiads (IMO), with solutions to all shortlisted problems. The second edition is the most current one and it covers the years from 1959 to 2009. (click here)

IMOmath Training

Becoming an expert in math problem solving is rewarding, fun, and slow. It has a lot to do with practice. This site is here to help you by offering free preparation materials and practice tests that are similar to AMC, AIME, IMO, and other math contests. (click here)

IMO Results

Constantly growing database of information about past contestants. (click here)