23rd Chess Olympiad gold medals in a superior display, as well as all four individual board prizes. On the reserve board, Akhmilovskaya won all of her ten games, the only perfect score in Olympiad history. Hungary and West Germany took silver and bronze, respectively. 23rd Chess Olympiad The 23rd Chess Olympiad, organized by FIDE and comprising an open and a women's tournament, as well as several other events designed to promote the game of chess, took place between October 25 and November 12, 1978, in Buenos Aires, Argentina. After the boycott two years earlier, the Eastern Bloc countries were back, including the Soviet
International Astronomy Olympiad International Astronomy Olympiad The International Astronomy Olympiad (IAO) is an internationally recognized annual astronomy scientific-educating event for high school students (14–18 years old), which includes an intellectual competition between these students. It is one of the International Science Olympiads. The Eurasian Astronomical Society founded the IAO in 1996. The competing part of IAO consists of three rounds: a theoretical, an observational, and a practical. Problems of the theoretical round involve classical problems in branches of astronomy, astrophysics, space and planetary physics, and maybe hypothetical situations. The observational round involves recognizing stars, constellations, estimating star magnitude and angular distance, working with