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Stage 5 Cipher Challenge
Age 16 to 18
Challenge Level 
The cipher challenge has now been completed.
The star solvers of the process were
Patrick from Woodbridge School in England
Joseph, from Hong Kong
Some of the hardest ciphers were also solved by an Anonymous solver from Somewhere in the US (perhaps you know this enigmatic person?)
Very well done to the many solvers who cracked one or two parts. This was a very difficult challenge, so many congratulations.
The solutions to each code are given in the individual problems themselves, or you can follow these links:
The star solvers of the process were
Patrick from Woodbridge School in England
Joseph, from Hong Kong
Some of the hardest ciphers were also solved by an Anonymous solver from Somewhere in the US (perhaps you know this enigmatic person?)
Very well done to the many solvers who cracked one or two parts. This was a very difficult challenge, so many congratulations.
The solutions to each code are given in the individual problems themselves, or you can follow these links:
Jluuis or Even Asutguus? Solution
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In 'Secret Transmissions', Agent X could send four-digit codes error free. Can you devise an error-correcting system for codes with more than four digits?
