This page lists the authors and the proposing countries of the problems of the IMO.
1959
1959 IMO (in Romania)
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 IMO (in Romania)
Problem 1 proposed by Bulgaria
Problem 2 proposed by Hungary
Problem 3 proposed by Gheorghe 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)
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 Gheorghe D. Simionescu, Romania
1962
1962 IMO (in Czechoslovakia)
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)
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)
Problem 1 proposed by Czechoslovakia
Problem 2 proposed by Hungary
Problem 3 proposed by Yugoslavia
Problem 4 proposed by Hungary
Problem 5 proposed by Gheorghe D. Simionescu, Romania
Problem 6 proposed by Poland
1965
1965 IMO (in East Germany)
Problem 1 proposed by Yugoslavia
Problem 2 proposed by Poland
Problem 3 proposed by Czechoslovakia
Problem 4 proposed by USSR
Problem 5 proposed by Gheorghe D. Simionescu, Romania
Problem 6 proposed by Poland
1966
1966 IMO (in Bulgaria)
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)
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)
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 David Monk, United Kingdom
1969
1969 IMO (in Romania)
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)
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)
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)
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)
Problem 1 proposed by Czechoslovakia
Problem 2 proposed by Poland
Problem 3 proposed by Åke Samuelsson, Sweden
Problem 4 proposed by Ðorde Dugošija, Yugoslavia
Problem 5 proposed by Poland
Problem 6 proposed by Åke Samuelsson, Sweden
1974
1974 IMO (in East Germany)
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)
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 David Monk, United Kingdom
1976
1976 IMO (in Austria)
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 Robert Lyness and David Monk, United Kingdom
1977
1977 IMO (in Yugoslavia)
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 David Monk, United Kingdom
Problem 5 proposed by Hermann Frasch, West Germany
Problem 6 proposed by Ivan Prodanov, Bulgaria
1978
1978 IMO (in Romania)
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 the United Kingdom)
Problem 1 proposed by Arthur Engel, West Germany
Problem 2 proposed by Nickolay Khadzhiivanov and Nedjalko Nenov, Bulgaria
Problem 3 proposed by Nikolai Vasil'ev and Igor F. Sharygin, USSR
Problem 4 proposed by Murray Klamkin, USA
Problem 5 proposed by Joe Gillis, Israel
Problem 6 proposed by Arthur Engel, West Germany
1980
1981
1981 IMO (in USA)
Problem 1 proposed by David Monk, United Kingdom
Problem 2 proposed by Arthur Engel, 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)
Problem 1 proposed by David Monk, United Kingdom
Problem 2 proposed by Jan van de Craats, Netherlands
Problem 3 proposed by Alexander N. Grishkov, USSR
Problem 4 proposed by David Monk, United Kingdom
Problem 5 proposed by Jan van de Craats, Netherlands
Problem 6 proposed by Van Nhu Cuong, Vietnam
1983
1983 IMO (in France)
Problem 1 proposed by David Monk, United Kingdom
Problem 2 proposed by Igor F. Sharygin, USSR
Problem 3 proposed by Arthur Engel, 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)
Problem 1 proposed by Michael Stoll and Bruno Haible, 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)
Problem 1 proposed by Frank Budden, 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 Igor F. Sharygin, USSR
Problem 6 proposed by Åke Samuelsson, Sweden
1986
1986 IMO (in Poland)
Problem 1 proposed by Arthur Engel, 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 David Monk, United Kingdom
Problem 6 proposed by Konrad Engel, East Germany
1987
1987 IMO (in Cuba)
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 Hans-Dietrich Gronau, East Germany
Problem 6 proposed by Vsevolod F. Lev, USSR
1988
1988 IMO (in Australia)
Problem 1 proposed by Lucien Kieffer, Luxembourg
Problem 2 proposed by Czechoslovakia
Problem 3 proposed by David Monk, 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)
Problem 1 proposed by Severino Gervacio and Jose Marasigan, 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)
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 Hagen von Eitzen, West Germany
Problem 6 proposed by Harm Derksen, Netherlands
1991
1991 IMO (in Sweden)
Problem 1 proposed by Arkadii Skopenkov, 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)
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)
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)
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 David Monk, United Kingdom
Problem 6 proposed by Kerkko Luosto, Finland
1995
1995 IMO (in Canada)
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)
Problem 1 proposed by Kerkko Luosto, Finland
Problem 2 proposed by Jeffrey 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)
Problem 1 proposed by Igor Akylich and 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)
Problem 1 (G1) proposed by Charles Leytem, Luxembourg
Problem 2 (C5) proposed by Ravi B. Bapat, India
Problem 3 (N6) proposed by Igor Voronovich, Belarus
Problem 4 (N1) proposed by David Monk, United Kingdom
Problem 5 (G3) proposed by Vyacheslav Yasinsky, Ukraine
Problem 6 (A5) proposed by Oleg Mushkarov and Nikolai Nikolov, Bulgaria
1999
1999 IMO (in Romania)
Problem 1 (G3) proposed by Jan Willemson, Estonia
Problem 2 (A1) proposed by Marcin Kuczma, Poland
Problem 3 (C5) proposed by Eugenii Barabanov and Igor Voronovich, Belarus
Problem 4 (N1) proposed by Liang-Ju Chu, Taiwan
Problem 5 (G6) proposed by Pavel Kozhevnikov, Russia
Problem 6 (A5) proposed by Tetsuya Ando, Japan
2000
2000 IMO (in South-Korea)
Problem 1 (G2) proposed by Sergei Berlov, Russia
Problem 2 (A1) proposed by Titu Andreescu, USA
Problem 3 (A5) proposed by Sergei Shikh and Igor Voronovich, Belarus
Problem 4 (C1) proposed by Sándor Dobos, Hungary
Problem 5 (N3) proposed by Valerii Senderov, Russia
Problem 6 (G8) proposed by Lev and Tatiana Emelianovii, Russia
2001
2001 IMO (in USA)
Problem 1 (G2) proposed by Hojoo Lee, South Korea
Problem 2 (A6) proposed by Hojoo Lee, South Korea
Problem 3 (C8) proposed by Christian Bey, Germany
Problem 4 (C2) proposed by Bill Sands, Canada
Problem 5 (G8) proposed by Shay Gueron, Israel. (Also: Problem 2501 in Crux Mathematicorum, February 2000)
Problem 6 (N5) proposed by Aleksander Ivanov, Bulgaria
2002
2002 IMO (in the United Kingdom)
Problem 1 (C1) proposed by Federico Ardila, Colombia
Problem 2 (G3) proposed by Hojoo Lee, South Korea
Problem 3 (N6) proposed by Laurentiu Panaitopol, Romania
Problem 4 (N2) proposed by Mihai Manea, Romania
Problem 5 (A4) proposed by Belur Jana Venkatachala, India
Problem 6 (G6) proposed by Vyacheslav Yasinsky, Ukraine
2003
2003 IMO (in Japan)
Problem 1 (C1) proposed by Carlos Gustavo Moreira, Brazil
Problem 2 (N3) proposed by Aleksander Ivanov, Bulgaria
Problem 3 (G6) proposed by Waldemar Pompe, Poland
Problem 4 (G1) proposed by Matti Lehtinen, Finland
Problem 5 (A4) proposed by Finbarr Holland, Ireland
Problem 6 (N6) proposed by Johan Yebbou, France
2004
2004 IMO (in Greece)
Problem 1 (G1) proposed by Dinu Serbanescu and Valentin Vornicu, Romania
Problem 2 (A4) proposed by Hojoo Lee, South Korea
Problem 3 (C7) proposed by Jan Willemson, Estonia
Problem 4 (A1) proposed by Hojoo Lee, South Korea
Problem 5 (G4) proposed by Waldemar Pompe, Poland
Problem 6 (N5) proposed by Mohsen Jamaali and Armin Morabbi, Iran
2005
2005 IMO (in Mexico)
Problem 1 (G2) proposed by Bogdan Enescu, Romania
Problem 2 (N2) proposed by Nicholas de Bruijn, Netherlands
Problem 3 (A5) proposed by Hojoo Lee, South Korea
Problem 4 (N1) proposed by Mariusz Skalba, Poland
Problem 5 (G4) proposed by Waldemar Pompe, Poland
Problem 6 (C6) proposed by Radu Gologan and Dan Schwarz, Romania
2006
2006 IMO (in Slovenia)
Problem 1 (G1) proposed by Hojoo Lee, South Korea
Problem 2 (C2) proposed by Dušan Djukić, Serbia
Problem 3 (A6) proposed by Finbarr Holland, Ireland
Problem 4 (N1) proposed by Zuming Feng, USA
Problem 5 (N4) proposed by Dan Schwarz, Romania
Problem 6 (G10) proposed by Dušan Djukić, Serbia
2007
2007 IMO (in Vietnam)
Problem 1 (A1) proposed by Michael Albert, New Zealand
Problem 2 (G4) proposed by Charles Leytem, Luxembourg
Problem 3 (C6) proposed by Vasily Astakhov, Russia
Problem 4 (G1) proposed by Marek Pechal, Czech Republic
Problem 5 (N6) proposed by Kevin Buzzard and Edward Crane, United Kingdom
Problem 6 (A7) proposed by Gerhard Woeginger, Netherlands
2008
2008 IMO (in Spain)
Problem 1 (G1) proposed by Andrey Gavrilyuk, Russia
Problem 2 (A2) proposed by Walther Janous, Austria
Problem 3 (N6) proposed by Kęstutis Česnavičius, Lithuania
Problem 4 (A1) proposed by Hojoo Lee, South Korea
Problem 5 (C4) proposed by Bruno Le Floch and Ilia Smilga, France
Problem 6 (G7) proposed by Vladimir Shmarov, Russia
2009
2009 IMO (in Germany)
Problem 1 (N1) proposed by Ross Atkins, Australia
Problem 2 (G2) proposed by Sergei Berlov, Russia
Problem 3 (A6) proposed by Gabriel Carroll, USA
Problem 4 (G1) proposed by Hojoo Lee, Peter Vandendriessche and Jan Vonk, Belgium
Problem 5 (A3) proposed by Bruno Le Floch, France
Problem 6 (C7) proposed by Dmitry Khramtsov, Russia
2010
2010 IMO (in Kazakhstan)
Problem 1 (A1) proposed by Pierre Bornsztein, France
Problem 2 (G4) proposed by Tai Wai Ming and Wang Chongli, Hong Kong
Problem 3 (N5) proposed by Gabriel Carroll, USA
Problem 4 (G2) proposed by Marcin Kuczma, Poland
Problem 5 (C4) proposed by Hans Zantema, Netherlands
Problem 6 (A7) proposed by Morteza Saghafiyan, Iran, Answer by Aadi
2011
2011 IMO (in the Netherlands)
Problem 1 (A1) proposed by Fernando Campos, Mexico
Problem 2 (C3) proposed by Geoff Smith, United Kingdom
Problem 3 (A6) proposed by Igor Voronovich, Belarus
Problem 4 (C1) proposed by Morteza Saghafiyan, Iran
Problem 5 (N5) proposed by Seyedmahyar Sefidgaran, Iran
Problem 6 (G8) proposed by Japanese PSC, Japan
2012
2012 IMO (in Argentina)
Problem 1 (G1) proposed by Evangelos Psychas, Greece
Problem 2 (A3) proposed by Angelo di Pasquale, Australia
Problem 3 (C6) proposed by David Arthur, Canada
Problem 4 (A1) proposed by Liam Baker, South Africa
Problem 5 (G5) proposed by Josef Tkadlec, Czech Republic
Problem 6 (N7) proposed by Dušan Djukić, Serbia
2013
2013 IMO (in Colombia)
Problem 1 (N2) proposed by Japanese PSC, Japan
Problem 2 (C2) proposed by Ivan Guo, Australia
Problem 3 (G6) proposed by Alexander A. Polyansky, Russia
Problem 4 (G1) proposed by Warut Suksompong and Potcharapol Suteparuk, Thailand
Problem 5 (A3) proposed by Nikolai Nikolov, Bulgaria
Problem 6 (C7) proposed by Alexander S. Golovanov and Mikhail A. Ivanov, Russia
2014
2014 IMO (in South Africa)
Problem 1 (A1) proposed by Gerhard Woeginger, Austria
Problem 2 (C3) proposed by Tonči Kokan, Croatia
Problem 3 (G5) proposed by Ali Zamani, Iran
Problem 4 (G1) proposed by Giorgi Arabidze, Georgia
Problem 5 (N3) proposed by Gerhard Woeginger, Luxembourg
Problem 6 (C5) proposed by Gerhard Woeginger, Austria
2015
2015 IMO (in Thailand)
Problem 1 (C2) proposed by Merlijn Staps, Netherlands
Problem 2 (N5) proposed by Dušan Djukić, Serbia
Problem 3 (G6) proposed by Danylo Khilko and Mykhailo Plotnikov, Ukraine
Problem 4 (G2) proposed by Silouanos Brazitikos and Evangelos Psychas, Greece
Problem 5 (A4) proposed by Dorlir Ahmeti, Albania
Problem 6 (C5) proposed by Ross Atkins and Ivan Guo, Australia
2016
2016 IMO (in Hong Kong)
Problem 1 (G1) proposed by Art Waeterschoot, Belgium
Problem 2 (C4) proposed by Trevor Tao, Australia
Problem 3 (N7) proposed by Aleksandr Gaifullin, Russia
Problem 4 (N3) proposed by Gerhard Woeginger, Luxembourg
Problem 5 (A6) proposed by Nazar Agakhanov and Ilya Bogdanov, Russia
Problem 6 (C7) proposed by Josef Tkadlec, Czech Republic
2017
2017 IMO (in Brazil)
Problem 1 (N1) proposed by Stephan Wagner, South Africa
Problem 2 (A6) proposed by Dorlir Ahmeti, Albania
Problem 3 (C5) proposed by Gerhard Woeginger, Austria
Problem 4 (G2) proposed by Charles Leytem, Luxembourg
Problem 5 (C4) proposed by Grigory Chelnokov, Russia
Problem 6 (N7) proposed by John Berman, USA
2018
2018 IMO (in Romania)
Problem 1 (G1) proposed by Silouanos Brazitikos, Evangelos Psychas and Michael Sarantis, Greece
Problem 2 (A2) proposed by Patrik Bak, Slovakia
Problem 3 (C4) proposed by Morteza Saghafian, Iran
Problem 4 (C2) proposed by Gurgen Asatryan, Armenia
Problem 5 (N4) proposed by Bayarmagnai Gombodorj, Mongolia
Problem 6 (G6) proposed by Tomasz Ciesla, Poland
2019
2019 IMO (in the United Kingdom)
Problem 1 (A1) proposed by Liam Baker, South Africa
Problem 2 (G3) proposed by Anton Trygub, Ukraine
Problem 3 (C5) proposed by Adrian Beker, Croatia
Problem 4 (N1) proposed by Gabriel Chicas Reyes, El Salvador
Problem 5 (C3) proposed by David Altizio, USA
Problem 6 (G7) proposed by Anant Mudgal, India
2020
2020 IMO (in Russia / virtual)
Problem 1 (G2) proposed by Dominik Burek, Poland
Problem 2 (A4) proposed by Stijn Cambie, Belgium
Problem 3 (C6) proposed by Milan Haiman and Carl Schildkraut, Hungary
Problem 4 (C3) proposed by Tejaswi Navrinarekallu, India
Problem 5 (N3) proposed by Oleg Košik, Estonia
Problem 6 (G9) proposed by Ting-Feng Lin and Hung-Hsun Hans Yu, Taiwan
2021
2021 IMO (in Russia / virtual)
Problem 1 (N2) proposed by Australia
Problem 2 (A4) proposed by Calvin Deng, Canada
Problem 3 (G7) proposed by Mykhailo Shtandenko, Ukraine
Problem 4 (G2) proposed by Dominik Burek and Tomasz Ciesla, Poland
Problem 5 (C3) proposed by Spain
Problem 6 (A6) proposed by Austria
2022
2022 IMO (in Norway)
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