Online physics competition for high school and university students with short and challenging problems, intended to be more difficult than the problems of EuPhO, IPhO, and APhO.

European Physics Olympiad (EuPhO) is a contest for high school students. The concept of EuPhO is similar to real research situations, with short problems description and plenty of space for creative solutions.

Other useful links:

IPhO Syllabus

IPhO formulas

IPhO Study Guides

A selection creative physics problems

Old NBPhO page