I studied in Hungary and I'm really glad that there is a really high quality science journal aimed for high school students. It has a competition in mathematics

I studied in Hungary and I'm really glad that there is a really high quality science journal aimed for high school students. It has a competition in mathematics, physics and informatics. You have to send back solutions to problems from the monthly issues. http://www.komal.hu/info/bemutatkozas.e.shtml http://www.komal.hu/info/bemutatkozas.e.shtml They translate the problems to English and I think high school students from other countries can participate too, though it's mainly a Hungarian competition. This really helped me learning physics through tricky problems. I could never solve any problems from the "A" labeled math problems, though I never tried since high school.