To see problems that incoming students of MSU math department need to solve now, you can check out: http://www.math.msu.su/admission/exams-write.html

E.g. http://www.math.msu.su/admission/MATWRITE/w2001j~1.gif does not seem much easier than "jewish" problems; and my understanding is that math department of MSU attempts to admit brilliant people who deliberately prepare to solve problems of this kind.