Brain teaser puzzles are one of the best exercises for your brain. It boosts the critical thinking skills and concentration.

This riddle challenges your logical thinking by asking how many eggs remain in the basket after you break 2 eggs, fry 2 eggs, ...

Engaging in challenging brain tests can sharpen your observational skills. This particular puzzle involves spotting 8 cleverly hidden animals within 19 seconds. It not only enhances attention to ...

How clever are you and how does your brain power compare to the rest of ... Watch out for Horizon’s Great British Intelligence Test on BBC Two in 2020.