The sites in this category are related to competitions and mathematical Olympiads, but must also contain content of interest to those not involved in the competition.
Please submit sites that has informations pertinent to math competitions, such as contest rules and problem archives.
Online based competition without an official gathering for the event. Contestants usually obtain the contest problems from website and must submit the answers through mail or e-mail. The format of the contests range from annual to problem of the week contests.
Please submit only sites that directly offer an online-based competition.