The international Rudolf Ortvay Competition in Physics is organized every year in autumn by the Roland Eötvös Physical Society and the Hungarian Association of Physics Students (Mafihe). It is an electronic competition for undergraduate (BSc) as well as graduate (MSc/PhD) students. The goal is to solve up to 10 problems from a given collection of about 42 challenging theoretical problems, at home, within about ten days. You may use any written or online resources, but consulting other people on the problems is not allowed. Some problems lead the contestants to so-far unsolved, open questions of science, the solution of which may spurringly influence their future scientific careers. The 2015 competition will be from the 22nd of October till the 2th of November. Registration is free of charge.