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1 August 2019
Download the puzzles from the August print issue of Chemistry World
1 July 2019
Download the puzzles from the July print issue of Chemistry World
1 June 2019
Download the puzzles from the June print issue of Chemistry World
1 May 2019
Download the puzzles from the May print issue of Chemistry World
1 April 2019
Download the puzzles from the April print issue of Chemistry World
1 March 2019
Download the puzzles from the March print issue of Chemistry World
1 February 2019
Download the puzzles from the February print issue of Chemistry World
1 January 2019
Download the puzzles from the January print issue of Chemistry World
1 November 2018
Download the puzzles from the November print issue of Chemistry World
1 October 2018
Download the puzzles from the October print issue of Chemistry World
