All entries to be received by 1 September 2023. Solutions and winners will be published online on 15 September 2023.

All entries to be received by 26 May 2023. Solutions and winners will be published online on 9 June 2023.

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All entries to be received by 24 February 2023. Solutions and winners will be published online on 10 March 2023.

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All entries to be received by 2 September 2022. Solutions and winners will be published online on 116 September 2022.

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All entries to be received by 27 May 2022. Solutions and winners will be published online on 10 June 2022.