12 riddles linked to new £50 note featuring the codebreaker may take seven hours to crack
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News from the world - nouvelles du monde
News from everywhere around the world - Actualité des 4 coins d'une boule qui tourne de moins en moins rond - plus quelques news au sujet du journalisme et de la presse... Si, si ! Curated by Marco Bertolini |
GCHQ releases what it calls the "most difficult puzzle" ever in honour of Alan Turing and the new 50 pounds banknote with the mathematician's portrait.