Gchq jobs mathematicians biography wikipedia

Where is gchq

Alexander , was an Irish-born British cryptanalyst , chess player, and chess writer. He was twice British chess champion and earned the title of International Master. The Alexanders' other son was Patrick Macgillicuddy Alexander 20 March — 21 September , a poet who settled in Australia in In , Alexander transferred to Hut 8 , the corresponding hut working on Naval Enigma.

He became deputy head of Hut 8 under Alan Turing. Alexander was more involved with the day-to-day operations of the hut than Turing, and, while Turing was visiting the United States , Alexander formally became the head of Hut 8 circa November By , he had been promoted to the head of "Section H" cryptanalysis , a post he retained until his retirement in MI5 's Peter Wright , in his best-selling book Spycatcher: The Candid Autobiography of a Senior Intelligence Officer , wrote about Alexander's assistance to MI5 in the ongoing Venona project , as well as other important mutual cooperation between the two organizations, which broke down previous barriers to progress.

Wright also lauded Alexander's professionalism, and opined that the exceptional mental demands of his cryptanalytical career and chess hobby likely contributed to Alexander's early death at age 64, despite his healthy lifestyle. Alexander represented Cambridge University in the Varsity chess matches of , , and he studied at King's College, Cambridge.

He was twice a winner of the British Chess Championship , in and Alexander represented England in the Chess Olympiad six times, in , , , , and