IMO Problems

2026

China

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2025

Australia

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2024

United Kingdom

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2023

Japan

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2022

Norway

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2021

Russia (remote)

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2020

Russia (remote)

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2019

United Kingdom

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2018

Romania

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2017

Brazil

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2016

Hong Kong

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2015

Thailand

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2014

South Africa

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2013

Colombia

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2012

Argentina

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2011

Netherlands

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2010

Kazakhstan

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2009

Germany

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2008

Spain

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2007

Vietnam

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2006

Slovenia

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2005

Mexico

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2004

Greece

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2003

Japan

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2002

United Kingdom

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2001

USA

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

2000

South Korea

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1999

Romania

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1998

Taiwan

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1997

Argentina

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1996

India

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1995

Canada

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1994

Hong Kong

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1993

Turkey

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1992

Russia

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1991

Sweden

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1990

China

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1989

West Germany

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1988

Australia

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1987

Cuba

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1986

Poland

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1985

Finland

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1984

Czechoslovakia

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1983

France

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1982

Hungary

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1981

USA

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1979

United Kingdom

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1978

Romania

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1977

Yugoslavia

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1976

Austria

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1975

Bulgaria

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1974

East Germany

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1973

Soviet Union

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1972

Poland

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1971

Czechoslovakia

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1970

Hungary

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1969

Romania

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1968

Soviet Union

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1967

Yugoslavia

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1966

Bulgaria

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1965

East Germany

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1964

Soviet Union

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1963

Poland

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1962

Czechoslovakia

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

Problem 7

1961

Hungary

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

1960

Romania

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

Problem 7

1959

Romania

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6