“Conel Hugh O’Donel Alexander died in 1974 and although his obituaries rightly spoke in glowing terms of his chess achievements, the impact of his more secret work still cannot be fully revealed.”
GCHQ Official website — May 5 2017
Conel Hugh O’Donel Alexander (19 April 1909 – 15 February 1974), was an Irish-born British cryptanalyst, chess player, and chess writer. He worked on the German Enigma machine at Bletchley Park during the Second World War, and was later the head of the cryptanalysis division at GCHQ for over 20 years. Follow us on Twitter: @INTEL_TODAY Continue reading









