Even further away was Australian electrician Adam, who found a second jigsaw piece tied to the famous signpost at John O’Groats. Greg, quickly realising that, of course, Radio 1 won't make this ...

When the last piece of a puzzle like that is a literal puzzle, though, it’s even better. [Nadieh] has been working on this jigsaw puzzle that displays a fireworks-like effect whenever a piece is ...