A new optical illusion is here, and it is a lot trickier than it looks. The image has a grid of 14 columns and 9 rows. The ...

In September 1985, Microsoft introduced Excel, an electronic spreadsheet program that revolutionised the way we organise and analyse data. With its grid of rows and columns, it allows users to sort ...

A viral optical illusion hides a green pear among 231 green apples in a massive grid - can you spot it before we reveal the answer?