Take on this tough brain teaser in the ultimate puzzle challenge and test your problem-solving skills. Solve it correctly for ...

Put your brain to work with these fun and challenging brain teasers where you can win cash prizes! Sharpen your ...

Get ready for the Optical Illusion 7, a captivating visual puzzle that challenges your perception! Buried within a sea of ...

Get ready for a holiday-themed challenge! This festive brain teaser invites spirited puzzle solvers to seek out nine cleverly ...

GCHQ has released their annual Christmas puzzle for 2025, even providing prospective codebreakers with some hints.

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

The Dutch General Intelligence and Security Service (AIVD) has released its 2025 holiday puzzle, inviting both adults and ...

Strands begins with a blank 6x4 grid filled with various letters and a box with today’s theme. Then, players will look for ...

GCHQ’s chief puzzler, known only as Colin, added: “This year’s Christmas challenge features seven puzzles designed to test ...

NPR's Ayesha Rascoe plays the puzzle with Montana Public Radio listener Brock Hammill of Corvallis, Mont., and Weekend ...

The puzzles are geared towards testing a range of skills that the UK's intelligence agency uses every day to keep the country ...

Hundreds of schoolchildren have taken part in a competition to have their Christmas card designs alongside cryptic puzzles ...