The main competition, Turkish Mathematical Olympiad, was established in 1993. It is organized in two rounds, the second one taking part in December. We don’t know whether an equivalent competition was held prior to 1993.
Turkey at International Competitions
Turkey participates at the IMO since 1978 and at Balkan MO since 1996. The IMO team is selected through a selection examination in April. In the recent history the best success of the team at IMO was the 6-th place in 2011.