At the bottom of the screen, you’ll see two people, that probably don’t know each other at all. Your aim is to find a chain of links between them.
Mouse over a person to see people they know. Click on a person in a chain, then one of their friends, to link the friend onto the chain. Once you’ve got someone on one side that knows someone on the other, you can join them together, completing the chain – and earning you points. Shorter chains mean more points.
Try to complete as many chains within the two minute time limit.