Difference between revisions of "IMO Problems and Solutions"
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+ | This page lists the authors of the problems of the [[International Mathematical Olympiad|IMO]]. | ||
+ | == 1959 == | ||
+ | |||
+ | * [[1959 IMO]] (in Romania) | ||
+ | * [[1959 IMO Problems]] | ||
+ | * [[1959 IMO Problems/Problem 1 | Problem 1]] proposed by Poland | ||
+ | * [[1959 IMO Problems/Problem 2 | Problem 2]] proposed by Constantin Ionescu-Tiu, Romania | ||
+ | * [[1959 IMO Problems/Problem 3 | Problem 3]] proposed by Hungary | ||
+ | * [[1959 IMO Problems/Problem 4 | Problem 4]] proposed by Hungary | ||
+ | * [[1959 IMO Problems/Problem 5 | Problem 5]] proposed by Cezar Cosnita, Romania | ||
+ | * [[1959 IMO Problems/Problem 6 | Problem 6]] proposed by Czechoslovakia | ||
+ | |||
+ | == 1960 == | ||
+ | |||
+ | * [[1960 IMO]] (in Romania) | ||
+ | * [[1960 IMO Problems]] | ||
+ | * [[1960 IMO Problems/Problem 1 | Problem 1]] proposed by Bulgaria | ||
+ | * [[1960 IMO Problems/Problem 2 | Problem 2]] proposed by Hungary | ||
+ | * [[1960 IMO Problems/Problem 3 | Problem 3]] proposed by Gh. D. Simionescu, Romania | ||
+ | * [[1960 IMO Problems/Problem 4 | Problem 4]] proposed by Hungary | ||
+ | * [[1960 IMO Problems/Problem 5 | Problem 5]] proposed by Czechoslovakia | ||
+ | * [[1960 IMO Problems/Problem 6 | Problem 6]] proposed by Bulgaria | ||
+ | * [[1960 IMO Problems/Problem 7 | Problem 7]] proposed by East Germany | ||
+ | |||
+ | == 1961 == | ||
+ | |||
+ | * [[1961 IMO]] (in Hungary) | ||
+ | * [[1961 IMO Problems]] | ||
+ | * [[1961 IMO Problems/Problem 1 | Problem 1]] proposed by Hungary | ||
+ | * [[1961 IMO Problems/Problem 2 | Problem 2]] proposed by Poland | ||
+ | * [[1961 IMO Problems/Problem 3 | Problem 3]] proposed by Bulgaria | ||
+ | * [[1961 IMO Problems/Problem 4 | Problem 4]] proposed by East Germany | ||
+ | * [[1961 IMO Problems/Problem 5 | Problem 5]] proposed by Czechoslovakia | ||
+ | * [[1961 IMO Problems/Problem 6 | Problem 6]] proposed by Gh. D. Simionescu, Romania | ||
+ | |||
+ | == 1962 == | ||
+ | |||
+ | * [[1962 IMO]] (in Czechoslovakia) | ||
+ | * [[1962 IMO Problems]] | ||
+ | * [[1962 IMO Problems/Problem 1 | Problem 1]] proposed by Poland | ||
+ | * [[1962 IMO Problems/Problem 2 | Problem 2]] proposed by Hungary | ||
+ | * [[1962 IMO Problems/Problem 3 | Problem 3]] proposed by Czechoslovakia | ||
+ | * [[1962 IMO Problems/Problem 4 | Problem 4]] proposed by Cezar Cosnita, Romania | ||
+ | * [[1962 IMO Problems/Problem 5 | Problem 5]] proposed by Bulgaria | ||
+ | * [[1962 IMO Problems/Problem 6 | Problem 6]] proposed by East Germany | ||
+ | * [[1962 IMO Problems/Problem 7 | Problem 7]] proposed by USSR | ||
+ | |||
+ | == 1963 == | ||
+ | |||
+ | * [[1963 IMO]] (in Poland) | ||
+ | * [[1963 IMO Problems]] | ||
+ | * [[1963 IMO Problems/Problem 1 | Problem 1]] proposed by Czechoslovakia | ||
+ | * [[1963 IMO Problems/Problem 2 | Problem 2]] proposed by USSR | ||
+ | * [[1963 IMO Problems/Problem 3 | Problem 3]] proposed by Hungary | ||
+ | * [[1963 IMO Problems/Problem 4 | Problem 4]] proposed by USSR | ||
+ | * [[1963 IMO Problems/Problem 5 | Problem 5]] proposed by Wolfgang Engel, East Germany | ||
+ | * [[1963 IMO Problems/Problem 6 | Problem 6]] proposed by Hungary | ||
+ | |||
+ | == 1964 == | ||
+ | |||
+ | * [[1964 IMO]] (in USSR) | ||
+ | * [[1964 IMO Problems]] | ||
+ | * [[1964 IMO Problems/Problem 1 | Problem 1]] proposed by Czechoslovakia | ||
+ | * [[1964 IMO Problems/Problem 2 | Problem 2]] proposed by Hungary | ||
+ | * [[1964 IMO Problems/Problem 3 | Problem 3]] proposed by Yugoslavia | ||
+ | * [[1964 IMO Problems/Problem 4 | Problem 4]] proposed by Hungary | ||
+ | * [[1964 IMO Problems/Problem 5 | Problem 5]] proposed by Gh. D. Simionescu, Romania | ||
+ | * [[1964 IMO Problems/Problem 6 | Problem 6]] proposed by Poland | ||
+ | |||
+ | == 1965 == | ||
+ | |||
+ | * [[1965 IMO]] (in East Germany) | ||
+ | * [[1965 IMO Problems]] | ||
+ | * [[1965 IMO Problems/Problem 1 | Problem 1]] proposed by Yugoslavia | ||
+ | * [[1965 IMO Problems/Problem 2 | Problem 2]] proposed by Poland | ||
+ | * [[1965 IMO Problems/Problem 3 | Problem 3]] proposed by Czechoslovakia | ||
+ | * [[1965 IMO Problems/Problem 4 | Problem 4]] proposed by USSR | ||
+ | * [[1965 IMO Problems/Problem 5 | Problem 5]] proposed by Gh. D. Simionescu, Romania | ||
+ | * [[1965 IMO Problems/Problem 6 | Problem 6]] proposed by Poland | ||
+ | |||
+ | == 1966 == | ||
+ | |||
+ | * [[1966 IMO]] (in Bulgaria) | ||
+ | * [[1966 IMO Problems]] | ||
+ | * [[1966 IMO Problems/Problem 1 | Problem 1]] proposed by USSR | ||
+ | * [[1966 IMO Problems/Problem 2 | Problem 2]] proposed by Hungary | ||
+ | * [[1966 IMO Problems/Problem 3 | Problem 3]] proposed by Bulgaria | ||
+ | * [[1966 IMO Problems/Problem 4 | Problem 4]] proposed by Yugoslavia | ||
+ | * [[1966 IMO Problems/Problem 5 | Problem 5]] proposed by Czechoslovakia | ||
+ | * [[1966 IMO Problems/Problem 6 | Problem 6]] proposed by Poland | ||
+ | |||
+ | == 1967 == | ||
+ | |||
+ | * [[1967 IMO]] (in Yugoslavia) | ||
+ | * [[1967 IMO Problems]] | ||
+ | * [[1967 IMO Problems/Problem 1 | Problem 1]] proposed by Poland | ||
+ | * [[1967 IMO Problems/Problem 2 | Problem 2]] proposed by Czechoslovakia | ||
+ | * [[1967 IMO Problems/Problem 3 | Problem 3]] proposed by United Kingdom | ||
+ | * [[1967 IMO Problems/Problem 4 | Problem 4]] proposed by Tullio Viola, Italy | ||
+ | * [[1967 IMO Problems/Problem 5 | Problem 5]] proposed by USSR | ||
+ | * [[1967 IMO Problems/Problem 6 | Problem 6]] proposed by Hungary | ||
+ | |||
+ | == 1968 == | ||
+ | |||
+ | * [[1968 IMO]] (in USSR) | ||
+ | * [[1968 IMO Problems]] | ||
+ | * [[1968 IMO Problems/Problem 1 | Problem 1]] proposed by Unknown Author, Romania (taken from a Romanian problem book) | ||
+ | * [[1968 IMO Problems/Problem 2 | Problem 2]] proposed by Czechoslovakia | ||
+ | * [[1968 IMO Problems/Problem 3 | Problem 3]] proposed by Bulgaria | ||
+ | * [[1968 IMO Problems/Problem 4 | Problem 4]] proposed by Poland | ||
+ | * [[1968 IMO Problems/Problem 5 | Problem 5]] proposed by East Germany | ||
+ | * [[1968 IMO Problems/Problem 6 | Problem 6]] proposed by United Kingdom | ||
+ | |||
+ | == 1969 == | ||
+ | |||
+ | * [[1969 IMO]] (in Romania) | ||
+ | * [[1969 IMO Problems]] | ||
+ | * [[1969 IMO Problems/Problem 1 | Problem 1]] proposed by Wolfgang Engel, East Germany | ||
+ | * [[1969 IMO Problems/Problem 2 | Problem 2]] proposed by Hungary | ||
+ | * [[1969 IMO Problems/Problem 3 | Problem 3]] proposed by Poland | ||
+ | * [[1969 IMO Problems/Problem 4 | Problem 4]] proposed by Netherlands | ||
+ | * [[1969 IMO Problems/Problem 5 | Problem 5]] proposed by A. Mekei, Mongolia | ||
+ | * [[1969 IMO Problems/Problem 6 | Problem 6]] proposed by USSR | ||
+ | |||
+ | == 1970 == | ||
+ | |||
+ | * [[1970 IMO]] (in Hungary) | ||
+ | * [[1970 IMO Problems]] | ||
+ | * [[1970 IMO Problems/Problem 1 | Problem 1]] proposed by Poland | ||
+ | * [[1970 IMO Problems/Problem 2 | Problem 2]] proposed by Dumitru Batinetzu, Romania | ||
+ | * [[1970 IMO Problems/Problem 3 | Problem 3]] proposed by Åke Samuelsson, Sweden | ||
+ | * [[1970 IMO Problems/Problem 4 | Problem 4]] proposed by Czechoslovakia | ||
+ | * [[1970 IMO Problems/Problem 5 | Problem 5]] proposed by Bulgaria | ||
+ | * [[1970 IMO Problems/Problem 6 | Problem 6]] proposed by USSR | ||
+ | |||
+ | == 1971 == | ||
+ | |||
+ | * [[1971 IMO]] (in Czechoslovakia) | ||
+ | * [[1971 IMO Problems]] | ||
+ | * [[1971 IMO Problems/Problem 1 | Problem 1]] proposed by Hungary | ||
+ | * [[1971 IMO Problems/Problem 2 | Problem 2]] proposed by USSR | ||
+ | * [[1971 IMO Problems/Problem 3 | Problem 3]] proposed by Poland | ||
+ | * [[1971 IMO Problems/Problem 4 | Problem 4]] proposed by Netherlands | ||
+ | * [[1971 IMO Problems/Problem 5 | Problem 5]] proposed by Bulgaria | ||
+ | * [[1971 IMO Problems/Problem 6 | Problem 6]] proposed by Sweden | ||
+ | |||
+ | == 1972 == | ||
+ | |||
+ | * [[1972 IMO]] (in Poland) | ||
+ | * [[1972 IMO Problems]] | ||
+ | * [[1972 IMO Problems/Problem 1 | Problem 1]] proposed by USSR | ||
+ | * [[1972 IMO Problems/Problem 2 | Problem 2]] proposed by Netherlands | ||
+ | * [[1972 IMO Problems/Problem 3 | Problem 3]] proposed by United Kingdom | ||
+ | * [[1972 IMO Problems/Problem 4 | Problem 4]] proposed by Netherlands | ||
+ | * [[1972 IMO Problems/Problem 5 | Problem 5]] proposed by Bulgaria | ||
+ | * [[1972 IMO Problems/Problem 6 | Problem 6]] proposed by United Kingdom | ||
+ | |||
+ | == 1973 == | ||
+ | |||
+ | * [[1973 IMO]] (in USSR) | ||
+ | * [[1973 IMO Problems]] | ||
+ | * [[1973 IMO Problems/Problem 1 | Problem 1]] proposed by Czechoslovakia | ||
+ | * [[1973 IMO Problems/Problem 2 | Problem 2]] proposed by Poland | ||
+ | * [[1973 IMO Problems/Problem 3 | Problem 3]] proposed by Åke Samuelsson, Sweden | ||
+ | * [[1973 IMO Problems/Problem 4 | Problem 4]] proposed by Yugoslavia | ||
+ | * [[1973 IMO Problems/Problem 5 | Problem 5]] proposed by Poland | ||
+ | * [[1973 IMO Problems/Problem 6 | Problem 6]] proposed by Åke Samuelsson, Sweden | ||
+ | |||
+ | == 1974 == | ||
+ | |||
+ | * [[1974 IMO]] (in East Germany) | ||
+ | * [[1974 IMO Problems]] | ||
+ | * [[1974 IMO Problems/Problem 1 | Problem 1]] proposed by Murray Klamkin, USA | ||
+ | * [[1974 IMO Problems/Problem 2 | Problem 2]] proposed by Matti Lehtinen, Finland | ||
+ | * [[1974 IMO Problems/Problem 3 | Problem 3]] proposed by Ciprian Borcea, Romania | ||
+ | * [[1974 IMO Problems/Problem 4 | Problem 4]] proposed by Bulgaria | ||
+ | * [[1974 IMO Problems/Problem 5 | Problem 5]] proposed by Jan van de Craats, Netherlands | ||
+ | * [[1974 IMO Problems/Problem 6 | Problem 6]] proposed by Sweden | ||
+ | |||
+ | == 1975 == | ||
+ | |||
+ | * [[1975 IMO]] (in Bulgaria) | ||
+ | * [[1975 IMO Problems]] | ||
+ | * [[1975 IMO Problems/Problem 1 | Problem 1]] proposed by Czechoslovakia | ||
+ | * [[1975 IMO Problems/Problem 2 | Problem 2]] proposed by United Kingdom | ||
+ | * [[1975 IMO Problems/Problem 3 | Problem 3]] proposed by Jan van de Craats, Netherlands | ||
+ | * [[1975 IMO Problems/Problem 4 | Problem 4]] proposed by USSR | ||
+ | * [[1975 IMO Problems/Problem 5 | Problem 5]] proposed by USSR | ||
+ | * [[1975 IMO Problems/Problem 6 | Problem 6]] proposed by United Kingdom | ||
+ | |||
+ | == 1976 == | ||
+ | |||
+ | * [[1976 IMO]] (in Austria) | ||
+ | * [[1976 IMO Problems]] | ||
+ | * [[1976 IMO Problems/Problem 1 | Problem 1]] proposed by Czechoslovakia | ||
+ | * [[1976 IMO Problems/Problem 2 | Problem 2]] proposed by Matti Lehtinen, Finland | ||
+ | * [[1976 IMO Problems/Problem 3 | Problem 3]] proposed by Jan van de Craats, Netherlands | ||
+ | * [[1976 IMO Problems/Problem 4 | Problem 4]] proposed by Murray Klamkin, USA | ||
+ | * [[1976 IMO Problems/Problem 5 | Problem 5]] proposed by Jan van de Craats, Netherlands | ||
+ | * [[1976 IMO Problems/Problem 6 | Problem 6]] proposed by United Kingdom | ||
+ | |||
+ | == 1977 == | ||
+ | |||
+ | * [[1977 IMO]] (in Yugoslavia) | ||
+ | * [[1977 IMO Problems]] | ||
+ | * [[1977 IMO Problems/Problem 1 | Problem 1]] proposed by Jan van de Craats, Netherlands | ||
+ | * [[1977 IMO Problems/Problem 2 | Problem 2]] proposed by Phan Duc Chinh, Vietnam | ||
+ | * [[1977 IMO Problems/Problem 3 | Problem 3]] proposed by Jan van de Craats, Netherlands | ||
+ | * [[1977 IMO Problems/Problem 4 | Problem 4]] proposed by United Kingdom | ||
+ | * [[1977 IMO Problems/Problem 5 | Problem 5]] proposed by West Germany | ||
+ | * [[1977 IMO Problems/Problem 6 | Problem 6]] proposed by Ivan Prodanov, Bulgaria | ||
+ | |||
+ | == 1978 == | ||
+ | |||
+ | * [[1978 IMO]] (in Romania) | ||
+ | * [[1978 IMO Problems]] | ||
+ | * [[1978 IMO Problems/Problem 1 | Problem 1]] proposed by Cuba | ||
+ | * [[1978 IMO Problems/Problem 2 | Problem 2]] proposed by Murray Klamkin, USA | ||
+ | * [[1978 IMO Problems/Problem 3 | Problem 3]] proposed by United Kingdom | ||
+ | * [[1978 IMO Problems/Problem 4 | Problem 4]] proposed by Murray Klamkin, USA | ||
+ | * [[1978 IMO Problems/Problem 5 | Problem 5]] proposed by France | ||
+ | * [[1978 IMO Problems/Problem 6 | Problem 6]] proposed by Jan van de Craats, Netherlands | ||
+ | |||
+ | == 1979 == | ||
+ | |||
+ | * [[1979 IMO]] (in United Kingdom) | ||
+ | * [[1979 IMO Problems]] | ||
+ | * [[1979 IMO Problems/Problem 1 | Problem 1]] proposed by West Germany | ||
+ | * [[1979 IMO Problems/Problem 2 | Problem 2]] proposed by Nickolay Khadzhiivanov and Nedjalko Nenov, Bulgaria | ||
+ | * [[1979 IMO Problems/Problem 3 | Problem 3]] proposed by USSR | ||
+ | * [[1979 IMO Problems/Problem 4 | Problem 4]] proposed by Murray Klamkin, USA | ||
+ | * [[1979 IMO Problems/Problem 5 | Problem 5]] proposed by Israel | ||
+ | * [[1979 IMO Problems/Problem 6 | Problem 6]] proposed by West Germany | ||
+ | |||
+ | == 1980 == | ||
+ | |||
+ | [[1980 IMO | There was no IMO in 1980]] | ||
+ | |||
+ | == 1981 == | ||
+ | |||
+ | * [[1981 IMO]] (in USA) | ||
+ | * [[1981 IMO Problems]] | ||
+ | * [[1981 IMO Problems/Problem 1 | Problem 1]] proposed by United Kingdom | ||
+ | * [[1981 IMO Problems/Problem 2 | Problem 2]] proposed by West Germany | ||
+ | * [[1981 IMO Problems/Problem 3 | Problem 3]] proposed by Jan van de Craats, Netherlands | ||
+ | * [[1981 IMO Problems/Problem 4 | Problem 4]] proposed by Belgium | ||
+ | * [[1981 IMO Problems/Problem 5 | Problem 5]] proposed by USSR | ||
+ | * [[1981 IMO Problems/Problem 6 | Problem 6]] proposed by Juha Oikkonen, Finland | ||
+ | |||
+ | == 1982 == | ||
+ | |||
+ | * [[1982 IMO]] (in Hungary) | ||
+ | * [[1982 IMO Problems]] | ||
+ | * [[1982 IMO Problems/Problem 1 | Problem 1]] proposed by United Kingdom | ||
+ | * [[1982 IMO Problems/Problem 2 | Problem 2]] proposed by Jan van de Craats, Netherlands | ||
+ | * [[1982 IMO Problems/Problem 3 | Problem 3]] proposed by Alexander N. Grishkov, USSR | ||
+ | * [[1982 IMO Problems/Problem 4 | Problem 4]] proposed by United Kingdom | ||
+ | * [[1982 IMO Problems/Problem 5 | Problem 5]] proposed by Jan van de Craats, Netherlands | ||
+ | * [[1982 IMO Problems/Problem 6 | Problem 6]] proposed by Van Nhu Cuong, Vietnam | ||
+ | |||
+ | == 1983 == | ||
+ | |||
+ | * [[1983 IMO]] (in France) | ||
+ | * [[1983 IMO Problems]] | ||
+ | * [[1983 IMO Problems/Problem 1 | Problem 1]] proposed by United Kingdom | ||
+ | * [[1983 IMO Problems/Problem 2 | Problem 2]] proposed by Igor F. Sharygin, USSR | ||
+ | * [[1983 IMO Problems/Problem 3 | Problem 3]] proposed by West Germany | ||
+ | * [[1983 IMO Problems/Problem 4 | Problem 4]] proposed by Belgium | ||
+ | * [[1983 IMO Problems/Problem 5 | Problem 5]] proposed by Marcin Kuczma, Poland | ||
+ | * [[1983 IMO Problems/Problem 6 | Problem 6]] proposed by Murray Klamkin, USA | ||
+ | |||
+ | == 1984 == | ||
+ | |||
+ | * [[1984 IMO]] (in Czechoslovakia) | ||
+ | * [[1984 IMO Problems]] | ||
+ | * [[1984 IMO Problems/Problem 1 | Problem 1]] proposed by West Germany | ||
+ | * [[1984 IMO Problems/Problem 2 | Problem 2]] proposed by Aiko Tiggelaar, Netherlands | ||
+ | * [[1984 IMO Problems/Problem 3 | Problem 3]] proposed by Ioan Tomescu, Romania | ||
+ | * [[1984 IMO Problems/Problem 4 | Problem 4]] proposed by Laurentiu Panaitopol, Romania | ||
+ | * [[1984 IMO Problems/Problem 5 | Problem 5]] proposed by Tserendorj Dashdorj, Mongolia | ||
+ | * [[1984 IMO Problems/Problem 6 | Problem 6]] proposed by Poland | ||
+ | |||
+ | == 1985 == | ||
+ | |||
+ | * [[1985 IMO]] (in Finland) | ||
+ | * [[1985 IMO Problems]] | ||
+ | * [[1985 IMO Problems/Problem 1 | Problem 1]] proposed by United Kingdom | ||
+ | * [[1985 IMO Problems/Problem 2 | Problem 2]] proposed by George Szekeres, Australia | ||
+ | * [[1985 IMO Problems/Problem 3 | Problem 3]] proposed by Jan van de Craats, Netherlands | ||
+ | * [[1985 IMO Problems/Problem 4 | Problem 4]] proposed by R. Gonchigdorj, Mongolia | ||
+ | * [[1985 IMO Problems/Problem 5 | Problem 5]] proposed by USSR | ||
+ | * [[1985 IMO Problems/Problem 6 | Problem 6]] proposed by Åke Samuelsson, Sweden | ||
+ | |||
+ | == 1986 == | ||
+ | |||
+ | * [[1986 IMO]] (in Poland) | ||
+ | * [[1986 IMO Problems]] | ||
+ | * [[1986 IMO Problems/Problem 1 | Problem 1]] proposed by West Germany | ||
+ | * [[1986 IMO Problems/Problem 2 | Problem 2]] proposed by Gengzhe Chang and Dongxu Qi, China | ||
+ | * [[1986 IMO Problems/Problem 3 | Problem 3]] proposed by Elias Wegert, East Germany | ||
+ | * [[1986 IMO Problems/Problem 4 | Problem 4]] proposed by Sven Sigurðsson, Iceland | ||
+ | * [[1986 IMO Problems/Problem 5 | Problem 5]] proposed by United Kingdom | ||
+ | * [[1986 IMO Problems/Problem 6 | Problem 6]] proposed by Konrad Engel, East Germany | ||
+ | |||
+ | == 1987 == | ||
+ | |||
+ | * [[1987 IMO]] (in Cuba) | ||
+ | * [[1987 IMO Problems]] | ||
+ | * [[1987 IMO Problems/Problem 1 | Problem 1]] proposed by Horst Sewerin, West Germany | ||
+ | * [[1987 IMO Problems/Problem 2 | Problem 2]] proposed by I.A. Kushnir, USSR | ||
+ | * [[1987 IMO Problems/Problem 3 | Problem 3]] proposed by Arthur Engel, West Germany | ||
+ | * [[1987 IMO Problems/Problem 4 | Problem 4]] proposed by Nguyen Minh Duc, Vietnam | ||
+ | * [[1987 IMO Problems/Problem 5 | Problem 5]] proposed by East Germany | ||
+ | * [[1987 IMO Problems/Problem 6 | Problem 6]] proposed by Vsevolod F. Lev, USSR | ||
+ | |||
+ | == 1988 == | ||
+ | |||
+ | * [[1988 IMO]] (in Australia) | ||
+ | * [[1988 IMO Problems]] | ||
+ | * [[1988 IMO Problems/Problem 1 | Problem 1]] proposed by Lucien Kieffer, Luxembourg | ||
+ | * [[1988 IMO Problems/Problem 2 | Problem 2]] proposed by Czechoslovakia | ||
+ | * [[1988 IMO Problems/Problem 3 | Problem 3]] proposed by United Kingdom | ||
+ | * [[1988 IMO Problems/Problem 4 | Problem 4]] proposed by Finbarr Holland, Ireland | ||
+ | * [[1988 IMO Problems/Problem 5 | Problem 5]] proposed by Dimitris Kontogiannis, Greece | ||
+ | * [[1988 IMO Problems/Problem 6 | Problem 6]] proposed by Stephan Beck, West Germany | ||
+ | |||
+ | == 1989 == | ||
+ | |||
+ | * [[1989 IMO]] (in West Germany) | ||
+ | * [[1989 IMO Problems]] | ||
+ | * [[1989 IMO Problems/Problem 1 | Problem 1]] proposed by Philippines | ||
+ | * [[1989 IMO Problems/Problem 2 | Problem 2]] proposed by Esther Szekeres, Australia | ||
+ | * [[1989 IMO Problems/Problem 3 | Problem 3]] proposed by Harm Derksen, Netherlands | ||
+ | * [[1989 IMO Problems/Problem 4 | Problem 4]] proposed by Eggert Briem, Iceland | ||
+ | * [[1989 IMO Problems/Problem 5 | Problem 5]] proposed by Bernt Lindström, Sweden | ||
+ | * [[1989 IMO Problems/Problem 6 | Problem 6]] proposed by Marcin Kuczma, Poland | ||
+ | |||
+ | == 1990 == | ||
+ | |||
+ | * [[1990 IMO]] (in China) | ||
+ | * [[1990 IMO Problems]] | ||
+ | * [[1990 IMO Problems/Problem 1 | Problem 1]] proposed by C.R. Pranesachar, India | ||
+ | * [[1990 IMO Problems/Problem 2 | Problem 2]] proposed by Pavol Černek, Czechoslovakia | ||
+ | * [[1990 IMO Problems/Problem 3 | Problem 3]] proposed by Laurentiu Panaitopol, Romania | ||
+ | * [[1990 IMO Problems/Problem 4 | Problem 4]] proposed by Albert Erkip, Turkey | ||
+ | * [[1990 IMO Problems/Problem 5 | Problem 5]] proposed by West Germany | ||
+ | * [[1990 IMO Problems/Problem 6 | Problem 6]] proposed by Harm Derksen, Netherlands | ||
+ | |||
+ | == 1991 == | ||
+ | |||
+ | * [[1991 IMO]] (in Sweden) | ||
+ | * [[1991 IMO Problems]] | ||
+ | * [[1991 IMO Problems/Problem 1 | Problem 1]] proposed by USSR | ||
+ | * [[1991 IMO Problems/Problem 2 | Problem 2]] proposed by Laurentiu Panaitopol, Romania | ||
+ | * [[1991 IMO Problems/Problem 3 | Problem 3]] proposed by Chengzhang Li, China | ||
+ | * [[1991 IMO Problems/Problem 4 | Problem 4]] proposed by Cecil Rousseau, USA | ||
+ | * [[1991 IMO Problems/Problem 5 | Problem 5]] proposed by Johan Yebbou, France | ||
+ | * [[1991 IMO Problems/Problem 6 | Problem 6]] proposed by Harm Derksen, Netherlands | ||
+ | |||
+ | == 1992 == | ||
+ | |||
+ | * [[1992 IMO]] (in Russia) | ||
+ | * [[1992 IMO Problems]] | ||
+ | * [[1992 IMO Problems/Problem 1 | Problem 1]] proposed by Achim Zulauf, New Zealand | ||
+ | * [[1992 IMO Problems/Problem 2 | Problem 2]] proposed by Belur Jana Venkatachala, India | ||
+ | * [[1992 IMO Problems/Problem 3 | Problem 3]] proposed by Chengzhang Li, China | ||
+ | * [[1992 IMO Problems/Problem 4 | Problem 4]] proposed by Johan Yebbou, France | ||
+ | * [[1992 IMO Problems/Problem 5 | Problem 5]] proposed by Stefano Mortola, Italy | ||
+ | * [[1992 IMO Problems/Problem 6 | Problem 6]] proposed by Tony Gardiner, United Kingdom | ||
+ | |||
+ | == 1993 == | ||
+ | |||
+ | * [[1993 IMO]] (in Turkey) | ||
+ | * [[1993 IMO Problems]] | ||
+ | * [[1993 IMO Problems/Problem 1 | Problem 1]] proposed by Tom Laffey, Ireland | ||
+ | * [[1993 IMO Problems/Problem 2 | Problem 2]] proposed by David Monk, United Kingdom | ||
+ | * [[1993 IMO Problems/Problem 3 | Problem 3]] proposed by Kerkko Luosto, Finland | ||
+ | * [[1993 IMO Problems/Problem 4 | Problem 4]] proposed by Donco Dimovski, Macedonia | ||
+ | * [[1993 IMO Problems/Problem 5 | Problem 5]] proposed by Elias Wegert, Germany | ||
+ | * [[1993 IMO Problems/Problem 6 | Problem 6]] proposed by Nicholas de Bruijn, Netherlands | ||
+ | |||
+ | == 1994 == | ||
+ | |||
+ | * [[1994 IMO]] (in Hong Kong) | ||
+ | * [[1994 IMO Problems]] | ||
+ | * [[1994 IMO Problems/Problem 1 | Problem 1]] proposed by Vincent Lafforgue, France | ||
+ | * [[1994 IMO Problems/Problem 2 | Problem 2]] proposed by Hans Lausch, Australia and Garnik Tonoyan, Armenia (independently) | ||
+ | * [[1994 IMO Problems/Problem 3 | Problem 3]] proposed by Gabriel Istrate, Romania | ||
+ | * [[1994 IMO Problems/Problem 4 | Problem 4]] proposed by Hans Lausch, Australia | ||
+ | * [[1994 IMO Problems/Problem 5 | Problem 5]] proposed by United Kingdom | ||
+ | * [[1994 IMO Problems/Problem 6 | Problem 6]] proposed by Kerkko Luosto, Finland | ||
+ | |||
+ | == 1995 == | ||
+ | |||
+ | * [[1995 IMO]] (in Canada) | ||
+ | * [[1995 IMO Problems]] | ||
+ | * [[1995 IMO Problems/Problem 1 | Problem 1]] proposed by Borislav Mihailov, Bulgaria | ||
+ | * [[1995 IMO Problems/Problem 2 | Problem 2]] proposed by Nazar Agakhanov, Russia | ||
+ | * [[1995 IMO Problems/Problem 3 | Problem 3]] proposed by Jaromír Šimša, Czech Republic | ||
+ | * [[1995 IMO Problems/Problem 4 | Problem 4]] proposed by Marcin Kuczma, Poland | ||
+ | * [[1995 IMO Problems/Problem 5 | Problem 5]] proposed by Alastair McNaughton, New Zealand | ||
+ | * [[1995 IMO Problems/Problem 6 | Problem 6]] proposed by Marcin Kuczma, Poland | ||
+ | |||
+ | == 1996 == | ||
+ | |||
+ | * [[1996 IMO]] (in India) | ||
+ | * [[1996 IMO Problems]] | ||
+ | * [[1996 IMO Problems/Problem 1 | Problem 1]] proposed by Kerkko Luosto, Finland | ||
+ | * [[1996 IMO Problems/Problem 2 | Problem 2]] proposed by J.P. Grossman, Canada | ||
+ | * [[1996 IMO Problems/Problem 3 | Problem 3]] proposed by Mircea Becheanu, Romania | ||
+ | * [[1996 IMO Problems/Problem 4 | Problem 4]] proposed by Alexander S. Golovanov, Russia | ||
+ | * [[1996 IMO Problems/Problem 5 | Problem 5]] proposed by Nairi Sedrakyan, Armenia | ||
+ | * [[1996 IMO Problems/Problem 6 | Problem 6]] proposed by Laurent Rosaz, France | ||
+ | |||
+ | == 1997 == | ||
+ | |||
+ | * [[1997 IMO]] (in Argentina) | ||
+ | * [[1997 IMO Problems]] | ||
+ | * [[1997 IMO Problems/Problem 1 | Problem 1]] proposed by Igor Voronovich, Belarus | ||
+ | * [[1997 IMO Problems/Problem 2 | Problem 2]] proposed by David Monk, United Kingdom | ||
+ | * [[1997 IMO Problems/Problem 3 | Problem 3]] proposed by Oleg Bogopolsky, Russia | ||
+ | * [[1997 IMO Problems/Problem 4 | Problem 4]] proposed by Ebadollah S. Mahmoodian and Mohammad Mahdian, Iran | ||
+ | * [[1997 IMO Problems/Problem 5 | Problem 5]] proposed by Petr Kanovsky, Czech Republic | ||
+ | * [[1997 IMO Problems/Problem 6 | Problem 6]] proposed by Giedrius Alkauskas, Lithuania | ||
+ | |||
+ | == 1998 == | ||
+ | |||
+ | * [[1998 IMO]] (in Taiwan) | ||
+ | * [[1998 IMO Problems]] | ||
+ | * [[1998 IMO Problems/Problem 1 | Problem 1]] proposed by Charles Leytem, Luxembourg | ||
+ | * [[1998 IMO Problems/Problem 2 | Problem 2]] proposed by R.B. Bapat, India | ||
+ | * [[1998 IMO Problems/Problem 3 | Problem 3]] proposed by Belarus | ||
+ | * [[1998 IMO Problems/Problem 4 | Problem 4]] proposed by David Monk, United Kingdom | ||
+ | * [[1998 IMO Problems/Problem 5 | Problem 5]] proposed by Ukraine | ||
+ | * [[1998 IMO Problems/Problem 6 | Problem 6]] proposed by Oleg Mushkarov and Nikolai Nikolov, Bulgaria | ||
+ | |||
+ | == 1999 == | ||
+ | |||
+ | * [[1999 IMO]] (in Romania) | ||
+ | * [[1999 IMO Problems]] | ||
+ | * [[1999 IMO Problems/Problem 1 | Problem 1]] proposed by Jan Willemson, Estonia | ||
+ | * [[1999 IMO Problems/Problem 2 | Problem 2]] proposed by Marcin Kuczma, Poland | ||
+ | * [[1999 IMO Problems/Problem 3 | Problem 3]] proposed by E. Barabanov and Igor Voronovich, Belarus | ||
+ | * [[1999 IMO Problems/Problem 4 | Problem 4]] proposed by Liang-Ju Chu, Taiwan | ||
+ | * [[1999 IMO Problems/Problem 5 | Problem 5]] proposed by Pavel Kozhevnikov, Russia | ||
+ | * [[1999 IMO Problems/Problem 6 | Problem 6]] proposed by Tetsuya Ando, Japan | ||
+ | |||
+ | == 2000 == | ||
+ | |||
+ | * [[2000 IMO]] (in South-Korea) | ||
+ | * [[2000 IMO Problems]] | ||
+ | * [[2000 IMO Problems/Problem 1 | Problem 1]] proposed by Sergei Berlov, Russia | ||
+ | * [[2000 IMO Problems/Problem 2 | Problem 2]] proposed by Titu Andreescu, USA | ||
+ | * [[2000 IMO Problems/Problem 3 | Problem 3]] proposed by Belarus | ||
+ | * [[2000 IMO Problems/Problem 4 | Problem 4]] proposed by Sándor Dobos, Hungary | ||
+ | * [[2000 IMO Problems/Problem 5 | Problem 5]] proposed by Valerii Senderov, Russia | ||
+ | * [[2000 IMO Problems/Problem 6 | Problem 6]] proposed by Lev and Tatiana Emelianovii, Russia | ||
+ | |||
+ | == 2001 == | ||
+ | |||
+ | * [[2001 IMO]] (in USA) | ||
+ | * [[2001 IMO Problems]] | ||
+ | * [[2001 IMO Problems/Problem 1 | Problem 1]] proposed by Hojoo Lee, South Korea | ||
+ | * [[2001 IMO Problems/Problem 2 | Problem 2]] proposed by Hojoo Lee, South Korea | ||
+ | * [[2001 IMO Problems/Problem 3 | Problem 3]] proposed by Christian Bey, Germany | ||
+ | * [[2001 IMO Problems/Problem 4 | Problem 4]] proposed by Bill Sands, Canada | ||
+ | * [[2001 IMO Problems/Problem 5 | Problem 5]] proposed by Israel, (Problem 2501 in Crux Mathematicorum, February 2000) | ||
+ | * [[2001 IMO Problems/Problem 6 | Problem 6]] proposed by Aleksander Ivanov, Bulgaria | ||
+ | |||
+ | == 2002 == | ||
+ | |||
+ | * [[2002 IMO]] (in United Kingdom) | ||
+ | * [[2002 IMO Problems]] | ||
+ | * [[2002 IMO Problems/Problem 1 | Problem 1]] proposed by Federico Ardila, Colombia | ||
+ | * [[2002 IMO Problems/Problem 2 | Problem 2]] proposed by Hojoo Lee, South Korea | ||
+ | * [[2002 IMO Problems/Problem 3 | Problem 3]] proposed by Laurentiu Panaitopol, Romania | ||
+ | * [[2002 IMO Problems/Problem 4 | Problem 4]] proposed by Mihai Manea, Romania | ||
+ | * [[2002 IMO Problems/Problem 5 | Problem 5]] proposed by Belur Jana Venkatachala, India | ||
+ | * [[2002 IMO Problems/Problem 6 | Problem 6]] proposed by Vyacheslav Yasinsky, Ukraine | ||
+ | |||
+ | == 2003 == | ||
+ | |||
+ | * [[2003 IMO]] (in Japan) | ||
+ | * [[2003 IMO Problems]] | ||
+ | * [[2003 IMO Problems/Problem 1 | Problem 1]] proposed by Carlos Gustavo Moreira, Brazil | ||
+ | * [[2003 IMO Problems/Problem 2 | Problem 2]] proposed by Aleksander Ivanov, Bulgaria | ||
+ | * [[2003 IMO Problems/Problem 3 | Problem 3]] proposed by Waldemar Pompe, Poland | ||
+ | * [[2003 IMO Problems/Problem 4 | Problem 4]] proposed by Matti Lehtinen, Finland | ||
+ | * [[2003 IMO Problems/Problem 5 | Problem 5]] proposed by Finbarr Holland, Ireland | ||
+ | * [[2003 IMO Problems/Problem 6 | Problem 6]] proposed by Johan Yebbou, France | ||
+ | |||
+ | == 2004 == | ||
+ | |||
+ | * [[2004 IMO]] (in Greece) | ||
+ | * [[2004 IMO Problems]] | ||
+ | * [[2004 IMO Problems/Problem 1 | Problem 1]] proposed by Valentin Vornicu and Dinu Serbanescu, Romania | ||
+ | * [[2004 IMO Problems/Problem 2 | Problem 2]] proposed by Hojoo Lee, South Korea | ||
+ | * [[2004 IMO Problems/Problem 3 | Problem 3]] proposed by Jan Willemson, Estonia | ||
+ | * [[2004 IMO Problems/Problem 4 | Problem 4]] proposed by Hojoo Lee, South Korea | ||
+ | * [[2004 IMO Problems/Problem 5 | Problem 5]] proposed by Waldemar Pompe, Poland | ||
+ | * [[2004 IMO Problems/Problem 6 | Problem 6]] proposed by Mohsen Jamaali and Armin Morabbi, Iran | ||
+ | |||
+ | == 2005 == | ||
+ | |||
+ | * [[2005 IMO]] (in Mexico) | ||
+ | * [[2005 IMO Problems]] | ||
+ | * [[2005 IMO Problems/Problem 1 | Problem 1]] proposed by Bogdan Enescu, Romania | ||
+ | * [[2005 IMO Problems/Problem 2 | Problem 2]] proposed by Nicholas de Bruijn, Netherlands | ||
+ | * [[2005 IMO Problems/Problem 3 | Problem 3]] proposed by Hojoo Lee, South Korea | ||
+ | * [[2005 IMO Problems/Problem 4 | Problem 4]] proposed by Mariusz Skalba, Poland | ||
+ | * [[2005 IMO Problems/Problem 5 | Problem 5]] proposed by Waldemar Pompe, Poland | ||
+ | * [[2005 IMO Problems/Problem 6 | Problem 6]] proposed by Radu Gologan and Dan Schwarz, Romania | ||
+ | |||
+ | == 2006 == | ||
+ | |||
+ | * [[2006 IMO]] (in Slovenia) | ||
+ | * [[2006 IMO Problems]] | ||
+ | * [[2006 IMO Problems/Problem 1 | Problem 1]] proposed by Hojoo Lee, South Korea | ||
+ | * [[2006 IMO Problems/Problem 2 | Problem 2]] proposed by Dušan Djukić, Serbia | ||
+ | * [[2006 IMO Problems/Problem 3 | Problem 3]] proposed by Finbarr Holland, Ireland | ||
+ | * [[2006 IMO Problems/Problem 4 | Problem 4]] proposed by Zuming Feng, USA | ||
+ | * [[2006 IMO Problems/Problem 5 | Problem 5]] proposed by Dan Schwarz, Romania | ||
+ | * [[2006 IMO Problems/Problem 6 | Problem 6]] proposed by Dušan Djukić, Serbia | ||
+ | |||
+ | == 2007 == | ||
+ | |||
+ | * [[2007 IMO]] (in Vietnam) | ||
+ | * [[2007 IMO Problems]] | ||
+ | * [[2007 IMO Problems/Problem 1 | Problem 1]] proposed by Michael Albert, New Zealand | ||
+ | * [[2007 IMO Problems/Problem 2 | Problem 2]] proposed by Charles Leytem, Luxembourg | ||
+ | * [[2007 IMO Problems/Problem 3 | Problem 3]] proposed by Vasily Astakhov, Russia | ||
+ | * [[2007 IMO Problems/Problem 4 | Problem 4]] proposed by Marek Pechal, Czech Republic | ||
+ | * [[2007 IMO Problems/Problem 5 | Problem 5]] proposed by Kevin Buzzard and Edward Crane, United Kingdom | ||
+ | * [[2007 IMO Problems/Problem 6 | Problem 6]] proposed by Gerhard Woeginger, Netherlands | ||
+ | |||
+ | == See also == | ||
+ | |||
+ | * [[IMO problems statistics]] | ||
+ | * [http://www.artofproblemsolving.com/Forum/resources.php?c=1&cid=16 IMO problems on the Resources page] | ||
+ | * [[IMO Shortlist Problems]] | ||
+ | * [[Academic Olympiads]] | ||
+ | * [[Mathematics competition resources]] | ||
+ | |||
+ | [[Category:Math Contest Problems]] |
Revision as of 19:35, 25 October 2007
This page lists the authors of the problems of the IMO.
Contents
[hide]- 1 1959
- 2 1960
- 3 1961
- 4 1962
- 5 1963
- 6 1964
- 7 1965
- 8 1966
- 9 1967
- 10 1968
- 11 1969
- 12 1970
- 13 1971
- 14 1972
- 15 1973
- 16 1974
- 17 1975
- 18 1976
- 19 1977
- 20 1978
- 21 1979
- 22 1980
- 23 1981
- 24 1982
- 25 1983
- 26 1984
- 27 1985
- 28 1986
- 29 1987
- 30 1988
- 31 1989
- 32 1990
- 33 1991
- 34 1992
- 35 1993
- 36 1994
- 37 1995
- 38 1996
- 39 1997
- 40 1998
- 41 1999
- 42 2000
- 43 2001
- 44 2002
- 45 2003
- 46 2004
- 47 2005
- 48 2006
- 49 2007
- 50 See also
1959
- 1959 IMO (in Romania)
- 1959 IMO Problems
- Problem 1 proposed by Poland
- Problem 2 proposed by Constantin Ionescu-Tiu, Romania
- Problem 3 proposed by Hungary
- Problem 4 proposed by Hungary
- Problem 5 proposed by Cezar Cosnita, Romania
- Problem 6 proposed by Czechoslovakia
1960
- 1960 IMO (in Romania)
- 1960 IMO Problems
- Problem 1 proposed by Bulgaria
- Problem 2 proposed by Hungary
- Problem 3 proposed by Gh. D. Simionescu, Romania
- Problem 4 proposed by Hungary
- Problem 5 proposed by Czechoslovakia
- Problem 6 proposed by Bulgaria
- Problem 7 proposed by East Germany
1961
- 1961 IMO (in Hungary)
- 1961 IMO Problems
- Problem 1 proposed by Hungary
- Problem 2 proposed by Poland
- Problem 3 proposed by Bulgaria
- Problem 4 proposed by East Germany
- Problem 5 proposed by Czechoslovakia
- Problem 6 proposed by Gh. D. Simionescu, Romania
1962
- 1962 IMO (in Czechoslovakia)
- 1962 IMO Problems
- Problem 1 proposed by Poland
- Problem 2 proposed by Hungary
- Problem 3 proposed by Czechoslovakia
- Problem 4 proposed by Cezar Cosnita, Romania
- Problem 5 proposed by Bulgaria
- Problem 6 proposed by East Germany
- Problem 7 proposed by USSR
1963
- 1963 IMO (in Poland)
- 1963 IMO Problems
- Problem 1 proposed by Czechoslovakia
- Problem 2 proposed by USSR
- Problem 3 proposed by Hungary
- Problem 4 proposed by USSR
- Problem 5 proposed by Wolfgang Engel, East Germany
- Problem 6 proposed by Hungary
1964
- 1964 IMO (in USSR)
- 1964 IMO Problems
- Problem 1 proposed by Czechoslovakia
- Problem 2 proposed by Hungary
- Problem 3 proposed by Yugoslavia
- Problem 4 proposed by Hungary
- Problem 5 proposed by Gh. D. Simionescu, Romania
- Problem 6 proposed by Poland
1965
- 1965 IMO (in East Germany)
- 1965 IMO Problems
- Problem 1 proposed by Yugoslavia
- Problem 2 proposed by Poland
- Problem 3 proposed by Czechoslovakia
- Problem 4 proposed by USSR
- Problem 5 proposed by Gh. D. Simionescu, Romania
- Problem 6 proposed by Poland
1966
- 1966 IMO (in Bulgaria)
- 1966 IMO Problems
- Problem 1 proposed by USSR
- Problem 2 proposed by Hungary
- Problem 3 proposed by Bulgaria
- Problem 4 proposed by Yugoslavia
- Problem 5 proposed by Czechoslovakia
- Problem 6 proposed by Poland
1967
- 1967 IMO (in Yugoslavia)
- 1967 IMO Problems
- Problem 1 proposed by Poland
- Problem 2 proposed by Czechoslovakia
- Problem 3 proposed by United Kingdom
- Problem 4 proposed by Tullio Viola, Italy
- Problem 5 proposed by USSR
- Problem 6 proposed by Hungary
1968
- 1968 IMO (in USSR)
- 1968 IMO Problems
- Problem 1 proposed by Unknown Author, Romania (taken from a Romanian problem book)
- Problem 2 proposed by Czechoslovakia
- Problem 3 proposed by Bulgaria
- Problem 4 proposed by Poland
- Problem 5 proposed by East Germany
- Problem 6 proposed by United Kingdom
1969
- 1969 IMO (in Romania)
- 1969 IMO Problems
- Problem 1 proposed by Wolfgang Engel, East Germany
- Problem 2 proposed by Hungary
- Problem 3 proposed by Poland
- Problem 4 proposed by Netherlands
- Problem 5 proposed by A. Mekei, Mongolia
- Problem 6 proposed by USSR
1970
- 1970 IMO (in Hungary)
- 1970 IMO Problems
- Problem 1 proposed by Poland
- Problem 2 proposed by Dumitru Batinetzu, Romania
- Problem 3 proposed by Åke Samuelsson, Sweden
- Problem 4 proposed by Czechoslovakia
- Problem 5 proposed by Bulgaria
- Problem 6 proposed by USSR
1971
- 1971 IMO (in Czechoslovakia)
- 1971 IMO Problems
- Problem 1 proposed by Hungary
- Problem 2 proposed by USSR
- Problem 3 proposed by Poland
- Problem 4 proposed by Netherlands
- Problem 5 proposed by Bulgaria
- Problem 6 proposed by Sweden
1972
- 1972 IMO (in Poland)
- 1972 IMO Problems
- Problem 1 proposed by USSR
- Problem 2 proposed by Netherlands
- Problem 3 proposed by United Kingdom
- Problem 4 proposed by Netherlands
- Problem 5 proposed by Bulgaria
- Problem 6 proposed by United Kingdom
1973
- 1973 IMO (in USSR)
- 1973 IMO Problems
- Problem 1 proposed by Czechoslovakia
- Problem 2 proposed by Poland
- Problem 3 proposed by Åke Samuelsson, Sweden
- Problem 4 proposed by Yugoslavia
- Problem 5 proposed by Poland
- Problem 6 proposed by Åke Samuelsson, Sweden
1974
- 1974 IMO (in East Germany)
- 1974 IMO Problems
- Problem 1 proposed by Murray Klamkin, USA
- Problem 2 proposed by Matti Lehtinen, Finland
- Problem 3 proposed by Ciprian Borcea, Romania
- Problem 4 proposed by Bulgaria
- Problem 5 proposed by Jan van de Craats, Netherlands
- Problem 6 proposed by Sweden
1975
- 1975 IMO (in Bulgaria)
- 1975 IMO Problems
- Problem 1 proposed by Czechoslovakia
- Problem 2 proposed by United Kingdom
- Problem 3 proposed by Jan van de Craats, Netherlands
- Problem 4 proposed by USSR
- Problem 5 proposed by USSR
- Problem 6 proposed by United Kingdom
1976
- 1976 IMO (in Austria)
- 1976 IMO Problems
- Problem 1 proposed by Czechoslovakia
- Problem 2 proposed by Matti Lehtinen, Finland
- Problem 3 proposed by Jan van de Craats, Netherlands
- Problem 4 proposed by Murray Klamkin, USA
- Problem 5 proposed by Jan van de Craats, Netherlands
- Problem 6 proposed by United Kingdom
1977
- 1977 IMO (in Yugoslavia)
- 1977 IMO Problems
- Problem 1 proposed by Jan van de Craats, Netherlands
- Problem 2 proposed by Phan Duc Chinh, Vietnam
- Problem 3 proposed by Jan van de Craats, Netherlands
- Problem 4 proposed by United Kingdom
- Problem 5 proposed by West Germany
- Problem 6 proposed by Ivan Prodanov, Bulgaria
1978
- 1978 IMO (in Romania)
- 1978 IMO Problems
- Problem 1 proposed by Cuba
- Problem 2 proposed by Murray Klamkin, USA
- Problem 3 proposed by United Kingdom
- Problem 4 proposed by Murray Klamkin, USA
- Problem 5 proposed by France
- Problem 6 proposed by Jan van de Craats, Netherlands
1979
- 1979 IMO (in United Kingdom)
- 1979 IMO Problems
- Problem 1 proposed by West Germany
- Problem 2 proposed by Nickolay Khadzhiivanov and Nedjalko Nenov, Bulgaria
- Problem 3 proposed by USSR
- Problem 4 proposed by Murray Klamkin, USA
- Problem 5 proposed by Israel
- Problem 6 proposed by West Germany
1980
1981
- 1981 IMO (in USA)
- 1981 IMO Problems
- Problem 1 proposed by United Kingdom
- Problem 2 proposed by West Germany
- Problem 3 proposed by Jan van de Craats, Netherlands
- Problem 4 proposed by Belgium
- Problem 5 proposed by USSR
- Problem 6 proposed by Juha Oikkonen, Finland
1982
- 1982 IMO (in Hungary)
- 1982 IMO Problems
- Problem 1 proposed by United Kingdom
- Problem 2 proposed by Jan van de Craats, Netherlands
- Problem 3 proposed by Alexander N. Grishkov, USSR
- Problem 4 proposed by United Kingdom
- Problem 5 proposed by Jan van de Craats, Netherlands
- Problem 6 proposed by Van Nhu Cuong, Vietnam
1983
- 1983 IMO (in France)
- 1983 IMO Problems
- Problem 1 proposed by United Kingdom
- Problem 2 proposed by Igor F. Sharygin, USSR
- Problem 3 proposed by West Germany
- Problem 4 proposed by Belgium
- Problem 5 proposed by Marcin Kuczma, Poland
- Problem 6 proposed by Murray Klamkin, USA
1984
- 1984 IMO (in Czechoslovakia)
- 1984 IMO Problems
- Problem 1 proposed by West Germany
- Problem 2 proposed by Aiko Tiggelaar, Netherlands
- Problem 3 proposed by Ioan Tomescu, Romania
- Problem 4 proposed by Laurentiu Panaitopol, Romania
- Problem 5 proposed by Tserendorj Dashdorj, Mongolia
- Problem 6 proposed by Poland
1985
- 1985 IMO (in Finland)
- 1985 IMO Problems
- Problem 1 proposed by United Kingdom
- Problem 2 proposed by George Szekeres, Australia
- Problem 3 proposed by Jan van de Craats, Netherlands
- Problem 4 proposed by R. Gonchigdorj, Mongolia
- Problem 5 proposed by USSR
- Problem 6 proposed by Åke Samuelsson, Sweden
1986
- 1986 IMO (in Poland)
- 1986 IMO Problems
- Problem 1 proposed by West Germany
- Problem 2 proposed by Gengzhe Chang and Dongxu Qi, China
- Problem 3 proposed by Elias Wegert, East Germany
- Problem 4 proposed by Sven Sigurðsson, Iceland
- Problem 5 proposed by United Kingdom
- Problem 6 proposed by Konrad Engel, East Germany
1987
- 1987 IMO (in Cuba)
- 1987 IMO Problems
- Problem 1 proposed by Horst Sewerin, West Germany
- Problem 2 proposed by I.A. Kushnir, USSR
- Problem 3 proposed by Arthur Engel, West Germany
- Problem 4 proposed by Nguyen Minh Duc, Vietnam
- Problem 5 proposed by East Germany
- Problem 6 proposed by Vsevolod F. Lev, USSR
1988
- 1988 IMO (in Australia)
- 1988 IMO Problems
- Problem 1 proposed by Lucien Kieffer, Luxembourg
- Problem 2 proposed by Czechoslovakia
- Problem 3 proposed by United Kingdom
- Problem 4 proposed by Finbarr Holland, Ireland
- Problem 5 proposed by Dimitris Kontogiannis, Greece
- Problem 6 proposed by Stephan Beck, West Germany
1989
- 1989 IMO (in West Germany)
- 1989 IMO Problems
- Problem 1 proposed by Philippines
- Problem 2 proposed by Esther Szekeres, Australia
- Problem 3 proposed by Harm Derksen, Netherlands
- Problem 4 proposed by Eggert Briem, Iceland
- Problem 5 proposed by Bernt Lindström, Sweden
- Problem 6 proposed by Marcin Kuczma, Poland
1990
- 1990 IMO (in China)
- 1990 IMO Problems
- Problem 1 proposed by C.R. Pranesachar, India
- Problem 2 proposed by Pavol Černek, Czechoslovakia
- Problem 3 proposed by Laurentiu Panaitopol, Romania
- Problem 4 proposed by Albert Erkip, Turkey
- Problem 5 proposed by West Germany
- Problem 6 proposed by Harm Derksen, Netherlands
1991
- 1991 IMO (in Sweden)
- 1991 IMO Problems
- Problem 1 proposed by USSR
- Problem 2 proposed by Laurentiu Panaitopol, Romania
- Problem 3 proposed by Chengzhang Li, China
- Problem 4 proposed by Cecil Rousseau, USA
- Problem 5 proposed by Johan Yebbou, France
- Problem 6 proposed by Harm Derksen, Netherlands
1992
- 1992 IMO (in Russia)
- 1992 IMO Problems
- Problem 1 proposed by Achim Zulauf, New Zealand
- Problem 2 proposed by Belur Jana Venkatachala, India
- Problem 3 proposed by Chengzhang Li, China
- Problem 4 proposed by Johan Yebbou, France
- Problem 5 proposed by Stefano Mortola, Italy
- Problem 6 proposed by Tony Gardiner, United Kingdom
1993
- 1993 IMO (in Turkey)
- 1993 IMO Problems
- Problem 1 proposed by Tom Laffey, Ireland
- Problem 2 proposed by David Monk, United Kingdom
- Problem 3 proposed by Kerkko Luosto, Finland
- Problem 4 proposed by Donco Dimovski, Macedonia
- Problem 5 proposed by Elias Wegert, Germany
- Problem 6 proposed by Nicholas de Bruijn, Netherlands
1994
- 1994 IMO (in Hong Kong)
- 1994 IMO Problems
- Problem 1 proposed by Vincent Lafforgue, France
- Problem 2 proposed by Hans Lausch, Australia and Garnik Tonoyan, Armenia (independently)
- Problem 3 proposed by Gabriel Istrate, Romania
- Problem 4 proposed by Hans Lausch, Australia
- Problem 5 proposed by United Kingdom
- Problem 6 proposed by Kerkko Luosto, Finland
1995
- 1995 IMO (in Canada)
- 1995 IMO Problems
- Problem 1 proposed by Borislav Mihailov, Bulgaria
- Problem 2 proposed by Nazar Agakhanov, Russia
- Problem 3 proposed by Jaromír Šimša, Czech Republic
- Problem 4 proposed by Marcin Kuczma, Poland
- Problem 5 proposed by Alastair McNaughton, New Zealand
- Problem 6 proposed by Marcin Kuczma, Poland
1996
- 1996 IMO (in India)
- 1996 IMO Problems
- Problem 1 proposed by Kerkko Luosto, Finland
- Problem 2 proposed by J.P. Grossman, Canada
- Problem 3 proposed by Mircea Becheanu, Romania
- Problem 4 proposed by Alexander S. Golovanov, Russia
- Problem 5 proposed by Nairi Sedrakyan, Armenia
- Problem 6 proposed by Laurent Rosaz, France
1997
- 1997 IMO (in Argentina)
- 1997 IMO Problems
- Problem 1 proposed by Igor Voronovich, Belarus
- Problem 2 proposed by David Monk, United Kingdom
- Problem 3 proposed by Oleg Bogopolsky, Russia
- Problem 4 proposed by Ebadollah S. Mahmoodian and Mohammad Mahdian, Iran
- Problem 5 proposed by Petr Kanovsky, Czech Republic
- Problem 6 proposed by Giedrius Alkauskas, Lithuania
1998
- 1998 IMO (in Taiwan)
- 1998 IMO Problems
- Problem 1 proposed by Charles Leytem, Luxembourg
- Problem 2 proposed by R.B. Bapat, India
- Problem 3 proposed by Belarus
- Problem 4 proposed by David Monk, United Kingdom
- Problem 5 proposed by Ukraine
- Problem 6 proposed by Oleg Mushkarov and Nikolai Nikolov, Bulgaria
1999
- 1999 IMO (in Romania)
- 1999 IMO Problems
- Problem 1 proposed by Jan Willemson, Estonia
- Problem 2 proposed by Marcin Kuczma, Poland
- Problem 3 proposed by E. Barabanov and Igor Voronovich, Belarus
- Problem 4 proposed by Liang-Ju Chu, Taiwan
- Problem 5 proposed by Pavel Kozhevnikov, Russia
- Problem 6 proposed by Tetsuya Ando, Japan
2000
- 2000 IMO (in South-Korea)
- 2000 IMO Problems
- Problem 1 proposed by Sergei Berlov, Russia
- Problem 2 proposed by Titu Andreescu, USA
- Problem 3 proposed by Belarus
- Problem 4 proposed by Sándor Dobos, Hungary
- Problem 5 proposed by Valerii Senderov, Russia
- Problem 6 proposed by Lev and Tatiana Emelianovii, Russia
2001
- 2001 IMO (in USA)
- 2001 IMO Problems
- Problem 1 proposed by Hojoo Lee, South Korea
- Problem 2 proposed by Hojoo Lee, South Korea
- Problem 3 proposed by Christian Bey, Germany
- Problem 4 proposed by Bill Sands, Canada
- Problem 5 proposed by Israel, (Problem 2501 in Crux Mathematicorum, February 2000)
- Problem 6 proposed by Aleksander Ivanov, Bulgaria
2002
- 2002 IMO (in United Kingdom)
- 2002 IMO Problems
- Problem 1 proposed by Federico Ardila, Colombia
- Problem 2 proposed by Hojoo Lee, South Korea
- Problem 3 proposed by Laurentiu Panaitopol, Romania
- Problem 4 proposed by Mihai Manea, Romania
- Problem 5 proposed by Belur Jana Venkatachala, India
- Problem 6 proposed by Vyacheslav Yasinsky, Ukraine
2003
- 2003 IMO (in Japan)
- 2003 IMO Problems
- Problem 1 proposed by Carlos Gustavo Moreira, Brazil
- Problem 2 proposed by Aleksander Ivanov, Bulgaria
- Problem 3 proposed by Waldemar Pompe, Poland
- Problem 4 proposed by Matti Lehtinen, Finland
- Problem 5 proposed by Finbarr Holland, Ireland
- Problem 6 proposed by Johan Yebbou, France
2004
- 2004 IMO (in Greece)
- 2004 IMO Problems
- Problem 1 proposed by Valentin Vornicu and Dinu Serbanescu, Romania
- Problem 2 proposed by Hojoo Lee, South Korea
- Problem 3 proposed by Jan Willemson, Estonia
- Problem 4 proposed by Hojoo Lee, South Korea
- Problem 5 proposed by Waldemar Pompe, Poland
- Problem 6 proposed by Mohsen Jamaali and Armin Morabbi, Iran
2005
- 2005 IMO (in Mexico)
- 2005 IMO Problems
- Problem 1 proposed by Bogdan Enescu, Romania
- Problem 2 proposed by Nicholas de Bruijn, Netherlands
- Problem 3 proposed by Hojoo Lee, South Korea
- Problem 4 proposed by Mariusz Skalba, Poland
- Problem 5 proposed by Waldemar Pompe, Poland
- Problem 6 proposed by Radu Gologan and Dan Schwarz, Romania
2006
- 2006 IMO (in Slovenia)
- 2006 IMO Problems
- Problem 1 proposed by Hojoo Lee, South Korea
- Problem 2 proposed by Dušan Djukić, Serbia
- Problem 3 proposed by Finbarr Holland, Ireland
- Problem 4 proposed by Zuming Feng, USA
- Problem 5 proposed by Dan Schwarz, Romania
- Problem 6 proposed by Dušan Djukić, Serbia
2007
- 2007 IMO (in Vietnam)
- 2007 IMO Problems
- Problem 1 proposed by Michael Albert, New Zealand
- Problem 2 proposed by Charles Leytem, Luxembourg
- Problem 3 proposed by Vasily Astakhov, Russia
- Problem 4 proposed by Marek Pechal, Czech Republic
- Problem 5 proposed by Kevin Buzzard and Edward Crane, United Kingdom
- Problem 6 proposed by Gerhard Woeginger, Netherlands