How did the complexity of the Delian problem, an ancient Greek mathematical riddle that baffled brilliant minds, reshape our ...

Keeping your noggin busy is known to boost cognitive performance, sharpen memory, and aid focus and attention. Some even reckon that regular brain workouts can stave off the symptoms of dementia.

Puzzleenthusiasts have been presented with a challenging brainteaserthat only people with a high IQ are expected to solve in under 30 seconds. Known as the 'rickety bridge' challenge, the task ...