A mind-boggling optical illusion is so difficult that only five percent of the people who attempt it will succeed.
While Easter has now passed, chocolate eggs are still lurking in many people’s cupboards, and puzzle masters clearly have the items on their minds as well, as they have created an egg-themed challenge.
A picture that appears to capture an ordinary pile of eggs is actually a tricky riddle.
Challengers are presented with a photo showing eggs inside a carton stacked four layers high.
They must use the little information available to calculate exactly how many eggs are inside the carton ... Read even more
