Keeping your brain active is widely recognised for improving cognitive performance, enhancing memory, and aiding focus and attention.

Regular brain workouts are even believed by some to delay dementia symptoms.

Among the popular methods for mental exercise are brainteasers and puzzles, with the added dimension of speed promising even more benefits.

Brainteasers not only sharpen the mind but also provide a fun way to challenge friends.

One particularly tricky brainteaser, currently making waves…