Fans of codebreaking, maths and brainteasers can now try their hand at the latest cryptic Christmas challenge set by GCHQ, ...
The UK's intelligence, security and cyber agency creates a Christmas Challenge puzzle every year and this year marks a decade ...
This ultimate quiz will seriously test your knowledge of Christmas, with four rounds on general knowledge, music, Christmas in numbers, and festive countries! You can play it yourself online, or print ...
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