![Can you crack it? GCHQ releases 'toughest ever puzzle' to commemorate launch of new Alan Turing £50 note Can you crack it? GCHQ releases 'toughest ever puzzle' to commemorate launch of new Alan Turing £50 note](https://www.telegraph.co.uk/content/dam/news/2021/03/25/Turing-01_1_trans_NvBQzQNjv4BqqVzuuqpFlyLIwiB6NTmJwfSVWeZ_vEN7c6bHu2jJnT8.jpg?imwidth=680)
Can you crack it? GCHQ releases 'toughest ever puzzle' to commemorate launch of new Alan Turing £50 note
![New £50 note with Alan Turing: release date and who's on it explained – The Scottish Sun | The Scottish Sun New £50 note with Alan Turing: release date and who's on it explained – The Scottish Sun | The Scottish Sun](https://www.thesun.co.uk/wp-content/uploads/2018/12/NINTCHDBPICT000643509524.jpg)
New £50 note with Alan Turing: release date and who's on it explained – The Scottish Sun | The Scottish Sun
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GCHQ releases 'hardest ever' puzzle in honour of Alan Turing £50 banknote - can you solve it? - Manchester Evening News
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Design of new Alan Turing £50 note revealed – GCHQ launches 'most difficult puzzle ever' to honour the code breaker
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Putting Alan Turing on the £50 note is a triumph for British science – and for equality | Emily Grossman | The Guardian
![New £50 note: When will the new note enter circulation, when will your old notes expire? | UK | News | Express.co.uk New £50 note: When will the new note enter circulation, when will your old notes expire? | UK | News | Express.co.uk](https://cdn.images.express.co.uk/img/dynamic/1/590x/New-50-note-latest-news-explained-banknotes-bank-of-england-andrew-bailey-alan-turing-50-new-circulation-50-note-expire-1414631.jpg?r=1616665219013)
New £50 note: When will the new note enter circulation, when will your old notes expire? | UK | News | Express.co.uk
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