The puzzle seems simple and harmless at first. You look at a geometric drawing and try to count how many triangles are hidden within it. Some people quickly say eight or ten. Others stare longer and ...

Everyone loves a good puzzle, whether you're a Wordle fanatic or addicted to Connections. But this new brain teaser tests your observation skills rather than your knowledge of words, and 80 per cent ...

Brain teasers are a lot of fun and make you think in a different way, even if you don't get the answer on the first try, you can easily go back and see what you missed and take what you learned onto ...