IMO Problems and Solutions, with authors
This page lists the authors of the problems of the IMO.
Contents
- 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 See also
1959
- 1959 IMO (Romania)
- 1959 IMO Problems
- Problem 1 proposed by Poland
- Problem 2 proposed by Romania
- Problem 3 proposed by Hungary
- Problem 4 proposed by Hungary
- Problem 5 proposed by Romania
- Problem 6 proposed by Czechoslovakia
1960
- 1960 IMO (Romania)
- 1960 IMO Problems
- Problem 1 proposed by Bulgaria
- Problem 2 proposed by Hungary
- Problem 3 proposed by 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 (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 Romania
1962
- 1962 IMO (Czechoslovakia)
- 1962 IMO Problems
- Problem 1 proposed by Poland
- Problem 2 proposed by Hungary
- Problem 3 proposed by Czechoslovakia
- Problem 4 proposed by Romania
- Problem 5 proposed by Bulgaria
- Problem 6 proposed by East Germany
- Problem 7 proposed by USSR
1963
- 1963 IMO (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 East Germany
- Problem 6 proposed by Hungary
1964
- 1964 IMO (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 Romania
- Problem 6 proposed by Poland
1965
- 1965 IMO (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 Romania
- Problem 6 proposed by Poland
1966
- 1966 IMO (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 (Yugoslavia)
- 1967 IMO Problems
- Problem 1 proposed by Poland
- Problem 2 proposed by Czechoslovakia
- Problem 3 proposed by United Kingdom
- Problem 4 proposed Tullio Viola, by Italy
- Problem 5 proposed by USSR
- Problem 6 proposed by Hungary
1968
- 1968 IMO (USSR)
- 1968 IMO Problems
- Problem 1 proposed by Romania
- 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 (Romania)
- 1969 IMO Problems
- Problem 1 proposed by East Germany
- Problem 2 proposed by Hungary
- Problem 3 proposed by Poland
- Problem 4 proposed by Netherlands
- Problem 5 proposed by Mongolia
- Problem 6 proposed by USSR
1970
- 1970 IMO (Hungary)
- 1970 IMO Problems
- Problem 1 proposed by Poland
- Problem 2 proposed by Romania
- Problem 3 proposed by Sweden
- Problem 4 proposed by Czechoslovakia
- Problem 5 proposed by Bulgaria
- Problem 6 proposed by USSR
1971
- 1971 IMO (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 (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 (USSR)
- 1973 IMO Problems
- Problem 1 proposed by Czechoslovakia
- Problem 2 proposed by Poland
- Problem 3 proposed by Sweden
- Problem 4 proposed by Yugoslavia
- Problem 5 proposed by Poland
- Problem 6 proposed by Sweden
1974
- 1974 IMO (East Germany)
- 1974 IMO Problems
- Problem 1 proposed by USA
- Problem 2 proposed by Finland
- Problem 3 proposed by Romania
- Problem 4 proposed by Bulgaria
- Problem 5 proposed by Netherlands
- Problem 6 proposed by Sweden
1975
- 1975 IMO (Bulgaria)
- 1975 IMO Problems
- Problem 1 proposed by Czechoslovakia
- Problem 2 proposed by United Kingdom
- Problem 3 proposed by Netherlands
- Problem 4 proposed by USSR
- Problem 5 proposed by USSR
- Problem 6 proposed by United Kingdom
1976
- 1976 IMO (Austria)
- 1976 IMO Problems
- Problem 1 proposed by Czechoslovakia
- Problem 2 proposed by Finland
- Problem 3 proposed by Netherlands
- Problem 4 proposed by USA
- Problem 5 proposed by Netherlands
- Problem 6 proposed by United Kingdom
1977
- 1977 IMO (Yugoslavia)
- 1977 IMO Problems
- Problem 1 proposed by Netherlands
- Problem 2 proposed by Vietnam
- Problem 3 proposed by Netherlands
- Problem 4 proposed by United Kingdom
- Problem 5 proposed by West Germany
- Problem 6 proposed by Ivan Prodanov, Bulgaria
1978
- 1978 IMO (Romania)
- 1978 IMO Problems
- Problem 1 proposed by Cuba
- Problem 2 proposed by USA
- Problem 3 proposed by United Kingdom
- Problem 4 proposed by USA
- Problem 5 proposed by France
- Problem 6 proposed by Netherlands
1979
- 1979 IMO (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 USA
- Problem 5 proposed by Israel
- Problem 6 proposed by West Germany
1980
1981
- 1981 IMO (USA)
- 1981 IMO Problems
- Problem 1 proposed by United Kingdom
- Problem 2 proposed by West Germany
- Problem 3 proposed by Netherlands
- Problem 4 proposed by Belgium
- Problem 5 proposed by USSR
- Problem 6 proposed by Finland
1982
- 1982 IMO (Hungary)
- 1982 IMO Problems
- Problem 1 proposed by United Kingdom
- Problem 2 proposed by Netherlands
- Problem 3 proposed by A.Grishkov, USSR
- Problem 4 proposed by United Kingdom
- Problem 5 proposed by Netherlands
- Problem 6 proposed by Vietnam
1983
- 1983 IMO (France)
- 1983 IMO Problems
- Problem 1 proposed by United Kingdom
- Problem 2 proposed by I.F. Sharygin, USSR
- Problem 3 proposed by West Germany
- Problem 4 proposed by Belgium
- Problem 5 proposed by Poland
- Problem 6 proposed by USA
1984
- 1984 IMO (Czechoslovakia)
- 1984 IMO Problems
- Problem 1 proposed by West Germany
- Problem 2 proposed by Netherlands
- Problem 3 proposed by Romania
- Problem 4 proposed by Romania
- Problem 5 proposed by Mongolia
- Problem 6 proposed by Poland
1985
- 1985 IMO (Finland)
- 1985 IMO Problems
- Problem 1 proposed by United Kingdom
- Problem 2 proposed by Australia
- Problem 3 proposed by Netherlands
- Problem 4 proposed by Mongolia
- Problem 5 proposed by USSR
- Problem 6 proposed by Sweden
1986
- 1986 IMO (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 Iceland
- Problem 5 proposed by United Kingdom
- Problem 6 proposed by Konrad Engel, East Germany
1987
- 1987 IMO (Cuba)
- 1987 IMO Problems
- Problem 1 proposed by West Germany
- Problem 2 proposed by I.A.Kushnir, USSR
- Problem 3 proposed by West Germany
- Problem 4 proposed by Vietnam
- Problem 5 proposed by East Germany
- Problem 6 proposed by V.F.Lev, USSR
1988
- 1988 IMO (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 West Germany
1989
- 1989 IMO (Germany)
- 1989 IMO Problems
- Problem 1 proposed by Philippines
- Problem 2 proposed by Australia
- Problem 3 proposed by Hendrikus Gerardus Derksen, Netherlands
- Problem 4 proposed by Iceland
- Problem 5 proposed by Sweden
- Problem 6 proposed by Marcin Kuczma, Poland
1990
- 1990 IMO (China)
- 1990 IMO Problems
- Problem 1 proposed by India
- Problem 2 proposed by Czechoslovakia
- Problem 3 proposed by Laurentin Panaitopol, Romania
- Problem 4 proposed by Turkey
- Problem 5 proposed by Germany
- Problem 6 proposed by Hendrikus Gerardus Derksen, Netherlands
1991
- 1991 IMO (Sweden)
- 1991 IMO Problems
- Problem 1 proposed by USSR
- Problem 2 proposed by Romania
- Problem 3 proposed by Chengzhang Li, China
- Problem 4 proposed by USA
- Problem 5 proposed by Johan Yebbou, France
- Problem 6 proposed by Hendrikus Gerardus Derksen, Netherlands
1992
- 1992 IMO (Russia)
- 1992 IMO Problems
- Problem 1 proposed by New Zealand
- Problem 2 proposed by 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 (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 Macedonia
- Problem 5 proposed by Elias Wegert, Germany
- Problem 6 proposed by Nicholas de Bruijn, Netherlands
1994
- 1994 IMO (Hong Kong)
- 1994 IMO Problems
- Problem 1 proposed by Vincent Lafforgue, France
- Problem 2 proposed by Hans Lausch, Australia and Armenia independently
- Problem 3 proposed by Romania
- Problem 4 proposed by Australia
- Problem 5 proposed by United Kingdom
- Problem 6 proposed by Kerkko Luosto, Finland
1995
- 1995 IMO (Canada)
- 1995 IMO Problems
- Problem 1 proposed by Borislav Mihailov, Bulgaria
- Problem 2 proposed by Nazar Agakhanov, Russia
- Problem 3 proposed by Karel Horak, Czech Republic
- Problem 4 proposed by Marcin Kuczma, Poland
- Problem 5 proposed by New Zealand
- Problem 6 proposed by Marcin Kuczma, Poland
1996
- 1996 IMO (India)
- 1996 IMO Problems
- Problem 1 proposed by Kerkko Luosto, Finland
- Problem 2 proposed by J.P. Grossman, Canada
- Problem 3 proposed by Romania
- Problem 4 proposed by Alexander Golovanov, Russia
- Problem 5 proposed by Nairi Sedrakyan, Armenia
- Problem 6 proposed by Laurent Rosaz, France
1997
- 1997 IMO (Argentina)
- 1997 IMO Problems
- Problem 1 proposed by Belarus
- Problem 2 proposed by David Monk, United Kingdom
- Problem 3 proposed by Russia
- Problem 4 proposed by Iran
- Problem 5 proposed by Petr Kanovsky, Czech Republic
- Problem 6 proposed by Giedrius Alkauskas, Lithuania
1998
- 1998 IMO (Taiwan)
- 1998 IMO Problems
- Problem 1 proposed by Charles Leytem, Luxembourg
- Problem 2 proposed by 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 (Romania)
- 1999 IMO Problems
- Problem 1 proposed by Jan Villemson, Estonia
- Problem 2 proposed by Marcin Kuczma, Poland
- Problem 3 proposed by E. Barabanov and I. Voronovich, Belarus
- Problem 4 proposed by Taiwan
- Problem 5 proposed by P. Kozhevnikov, Russia
- Problem 6 proposed by Japan
2000
- 2000 IMO (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 Sandor Dobos, Hungary
- Problem 5 proposed by Valerii Senderov, Russia
- Problem 6 proposed by Lev and Tatiana Emelianovii, Russia
2001
- 2001 IMO (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 Toshio Seimiya, Japan (see Crux Mathematicorum problem 2501)
- Problem 6 proposed by Alexander Ivanov, Bulgaria
2002
- 2002 IMO (United Kingdom)
- 2002 IMO Problems
- Problem 1 proposed by Federico Ardila, Colombia
- Problem 2 proposed by Hojoo Lee, South Korea
- Problem 3 proposed by Laurentin Panaitopol, Romania
- Problem 4 proposed by Mihai Manea, Romania
- Problem 5 proposed by B.J.Venkatachala, India
- Problem 6 proposed by Vyacheslav Yasinsky, Ukraine
2003
- 2003 IMO (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 (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 Villemson, Estonia
- Problem 4 proposed by Hojoo Lee, South Korea
- Problem 5 proposed by Waldemar Pompe, Poland
- Problem 6 proposed by Mohsen Jamali, Iran
2005
- 2005 IMO (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, Romania
2006
- 2006 IMO (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 Romania
- Problem 6 proposed by Dušan Djukić, Serbia
