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Conel Hugh O'Donel Alexander

mathematician

Conel Hugh O'Donel Alexander

British cryptanalyst, chess player, and chess writer (1909–1974)

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About Conel Hugh O'Donel Alexander

Conel Hugh O'Donel Alexander, known as Hugh Alexander and C. H. O'D. Alexander, 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 25 years. He was twice British chess champion and earned the title of International Master.

Facts from Wikidata (CC0). Image by Wim van Rossem for Anefo via Wikimedia Commons (CC0).

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Occupation: mathematician, chess player, cryptographer, journalist
Citizenship: Ireland, United Kingdom, United Kingdom of Great Britain and Ireland
Born: April 19, 1909
Died: February 15, 1974

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