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The Open Challenge 2025 topic was Sweets. The Paper and Results for this year's competition can be found in the table below. A virtual prize-giving evening will be held on "Gather.town" on 08 May 2025. ---- ---- !! Open Challenge '25 is sponsored by the Worshipful Company of Actuaries and is also supported by W. H. Smith Promotions Ltd. COLUMN_START^ [[[ IMG:Actuarieslogo.png ]]] COLUMN_SPLIT^ [[[ IMG:WHS.jpg ---- http://www.whsmith.co.uk ]]] COLUMN_END ---- !! Here is a selection of past papers and solutions: | | |>> *Questions* <<| | |>> *Solutions* <<| | |>> *Topic* <<| | |>> *Results* <<| | | 2025 | [PDF](OpenChallenge_2025_Questions.pdf) | | Sweets | [PDF](OpenChallenge_2025_Results_1.pdf) | | 2024 | [PDF](OpenChallenge_2024_Questions.pdf) | [PDF](OpenChallenge_2024_Solutions.pdf) | Constellations | [PDF](OpenChallenge_2024_Results.pdf) | | 2023 | [PDF](OpenChallenge_2023_Questions.pdf) | [PDF](OpenChallenge_2023_Solutions.pdf) | Ancient Egypt | [PDF](OpenChallenge_2023_Results.pdf) | | 2022 | [PDF](OpenChallenge_2022_Questions.pdf) | [PDF](OpenChallenge_2022_Solutions.pdf) | Famous Artworks | [PDF](OpenChallenge_2022_Results.pdf) | | 2021 | [PDF](OpenChallenge_2021_Questions.pdf) | [PDF](OpenChallenge_2021_Solutions.pdf) | Nature | [PDF](OpenChallenge_2021_Results1.pdf) | | 2020 | [PDF](OpenChallenge_2020_Questions.pdf) | [PDF](OpenChallenge_2020_Solutions.pdf) | Vision | [PDF](OpenChallenge_2020_Results1.pdf) | | 2019 | [PDF](OpenChallenge_2019_Questions.pdf) | [PDF](OpenChallenge_2019_Solutions.pdf) | Periodic Table of the Elements | [PDF](OpenChallenge_2019_Results2.pdf) | | 2018 | [PDF](OpenChallenge_2018_Questions.pdf) | [PDF](OpenChallenge_2018_Solutions.pdf) | Food and Drink | [PDF](OpenChallenge_2018_Results2.pdf) | | 2017 | [PDF](OpenChallenge_2017_Questions.pdf) | [PDF](OpenChallenge_2017_Solutions.pdf) | Games | [PDF](OpenChallenge_2017_Results2.pdf) |