One notable problem from the 2017 elementary level involved 100 points on a plane, where participants had to prove a specific property of "clockwise triangles"—the problem was clever enough that it actually used the year "2017" as a target value within its proof.
Nearly 4,000 contestants from 40 different countries participated in the 4th IGO. iGO 2017
The 2017 event marked a significant expansion for the competition, with a massive surge in international participation. One notable problem from the 2017 elementary level
A series of personalized travel books for children launched around 2017, sweepingly taking kids on "adventures" through cities like London. A series of personalized travel books for children
Within Iran, the exam was hosted in four major cities: Tehran, Mashhad, Tabriz, and Shiraz. Internationally, countries coordinated their local contests within 24 hours of the Iranian event.
The olympiad consisted of four difficulty levels: Elementary: For grades 7 and 8. Intermediate: For grades 9 and 10. Advanced: For grades 11 and 12.
Each level featured a single paper with 5 geometry problems to be solved in 4 hours and 30 minutes.