53rd International Chemistry Olympiads
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Osaka, Japan (Remote Access Exam)
From 24 July to 2 August 2021
Preparatory Problems IChO 2021
52nd International Chemistry Olympiads
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Istanbul, Turkey (Remote Access Exam)
From 23 to 29 July 2020
Preparatory Problems IChO 2020
51st International Chemistry Olympiads
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Paris, France
From 21 to 30 July 2019
Preparatory Problems IChO 2019
50th International Chemistry Olympiads
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Bratislava, Slovakia and Prague, Czech Republic
From 19 to 29 July 2018
Theoretical Preparatory Problem IChO 2018
Practical Preparatory Problem IChO 2018
49th International Chemistry Olympiads
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Nakhon Pathom, Thailand
From 6 to 15 July 2017
Preparatory Problem IChO 2017
48th International Chemistry Olympiads
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Tbilisi, Georgia
From 23 July to 1 August 2016
Preparatory Problem IChO 2016
47th International Chemistry Olympiads
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Baku, Azerbaijan
From 20 to 29 July 2015
Preparatory Problem IChO 2015
