There are those who can monitor their environment in such detail that nothing escapes their notice – they just have a hawk’s eye. But there are individuals who miss things even if they are there in front of their noses. Find the heart in the elephant herd!

Riddles that challenge us to spot differences between 2 similar images activate our concentration power to the maximum: they put our eyes and brain to work. This is great because training our minds is as important as exercising our muscles.