GCHQ’s chief puzzler, known only as Colin, added: "This year's Christmas challenge features seven puzzles designed to test everything from codebreaking and mathematical analysis to lateral thinking ...

The UK's intelligence, security and cyber agency creates a Christmas Challenge puzzle every year and this year marks a decade of challenges.

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A simple brain teaser is causing a stir online. The puzzle asks for the total number of people based on men, wives, and ...

A math puzzle is a type of brain teaser where the reader's critical thinking and problem-solving skills are tested. These challenges have the potential to boost intelligence and improve concentration.

Moshi Kids has a trio of joyful, ad-free learning apps designed to turn screen time into something parents can feel genuinely ...

Veteran teacher Courtney Phillips discovered that math can be taught in an engaging way through the ancient game of mahjong, ...

Undergraduate students across North America sat down on Saturday to write a grueling six-hour math exam, many of them ...

Undergraduate students across North America sat down on Saturday to write a gruelling six-hour math exam, many of them ...

This simple-looking equation is dividing people online. Can you recall the golden rule from math class to find the right ...

Flex your math muscles with this weekend’s brain teaser. Play now.

GCHQ's Christmas puzzle is nearly here but when will it be unveiled? Here's what we know so far about the upcoming quiz.