John Derek Beasley (15 February 1940 â 3 March 2024) was a British mathematician and chess composer.
Beasley published around fifty endgame studies. He became the editor of British Chess Magazine in 1995, and founded the magazine British Endgame Study News (which he edited) in 1996. (It had 65 issues, the last one being published in 2010.) He represented Great Britain at the World Chess Solving Championship in 1977 and 1978.
He is the coauthor (with Timothy Whitworth) of the books
In 1978, Beasley translated and reissued the celebrated book of Phillipp Klett (1813âÂÂ1910), Ph. Klett's Schachprobleme mit einer Einführung in die Theorie des Schachproblems, that appeared in 1878 and contained 112 compositions.