(The Open Challenge 2025 topic was Sweets.

The Paper, Results and Solutions for this year's competition can be found in the table below.

A virtual prize-giving evening was 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.
http://www.whsmith.co.uk

Here is a selection of past papers and solutions:

Questions
Solutions
Topic
Results
2025 PDF PDF Sweets PDF
2024 PDF PDF Constellations PDF
2023 PDF PDF Ancient Egypt PDF
2022 PDF PDF Famous Artworks PDF
2021 PDF PDF Nature PDF
2020 PDF PDF Vision PDF
2019 PDF PDF Periodic Table of the Elements PDF
2018 PDF PDF Food and Drink PDF
2017 PDF PDF Games PDF

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