The archive comprises papers relating to the Welsh Chess Union and affiliated regional chess clubs, 1954-2014. The first group (2018 deposit) consists mainly of correspondence, minutes, and administrative records relating to chess in Wales, details of national and international tournaments, tournament participation, and papers relating to other chess associations both in Wales and overseas. The second group (2024 donation) comprises papers and memorabilia relating to the Welsh Chess Union and accumulated by the Welsh chess player Iolo Jones, including copies of the WCU magazine 'Y Ddraig', and reports and memorabilia from international Chess Olympiads.

The collection also originally contained four photographic albums which have been transferred for further conservation.