Hidden within the puzzle are thirteen clues of letters which ... British Sign Language and Morse code. The letters can be rearranged to spell "Journey to GCHQ". The phonetic alphabet clues are ...

GCHQ, which is renowned for its puzzles thanks to its roots in cryptography ... the problem if they are interested in a career in code-breaking. Hidden within the image are 13 elements that ...

forcing the hacker to use logic, not personal information, to crack it. The ten puzzles here are constructed in this way. They can thus be called "password code puzzles" in order to highlight the ...

Hidden within the puzzle are thirteen clues of letters which can then be brought together to spell out a message. Credit: PA The UK's intelligence, security and cyber agency GCHQ has released a ...

Think you're a math genius? This brain teaser challenges you to calculate the exact weight of each animal using only logic ...

The Playfair cipher is an incredibLe code system that is both difficult to ... making it much harder to crack! But if you know the system, decoding a message is a simple process.

Can you crack the code and unlock the treasure ... 2-3-5-8 or 2-5-3-8 You successfully unlock the treasure! This puzzle game blends logic, algebra and number properties, making it an engaging ...

The puzzles are designed to test problem-solving skills in secondary schools across the country. The Christmas card puzzle features seven different tests challenging pupils’ minds and thinking ...