A local chapter of the International Math Olympiad, the first stage of the Spanish Math Olympiad is usually held around December in each University District.
It consists of two written tests in which a total of 8 problems have to be solved; the three best participants within each district will go on to the National championship.
The National phase is usually held around March, and is made up of two written tests, each lasting four and a half hours, during which participants must tackle 6 problems.
The 6 best participants in this National phase are eligible to go on to the International Math Olympiad, held around July, while the best 4 also go on to the Iberian-American Math Olympiad, held around September.
For more information visit http://www.olimpiadamatematica.es/
Participation fees are nominal.
Travel and accommodation to be paid separately
The organisation specifies that solving the Olympiad's problems does not require advanced conceptual knowledge so much as sound reasoning and a certain amount of creativity.
It also adds that 'a brilliant Maths student who has not explored beyond the Maths school curriculum will have nothing to do' at the Olympiad.
Regulary study is required.
Local phase winners often attend further preparatory course.
Candidates must be registered by their schools; typically these will be in their last two years of secondary schooling only, although the organisation allows the registration high-ability participants who are 1 or 2 years younger.