The Japanese Mathematical Olympiad was officially established in 1991, although a contest of the same format was also held in 1990 as the IMO team selection test. It is regularly held in two rounds. The first round takes part in January and consists of a set of 12 shorter problems which are to be answered without presenting the work; the final round, held on a national holiday on February 11, consists of five problems.
Japan at International Competitions
Japan has participated at IMO since 1990. In the recent history the best success of the team at IMO is the 6-th place in 2007.