As you all know by now, we love a quiz here at Planet Football. But this one has got us tearing our hair out.
Naming old Premier League players or the top goalscorers from various clubs or competitions is very much our bread and butter, but this is a a completely different kettle of fish.
All you actually have to do is name the 50 clubs in the picture, which sounds easy, but some of the clues are so ridiculously abstract that only a very particular sort of mind will get them all.
In fact, of the near-30,000 players that attempted the quiz in its first week, only 2.5% of them completed it. It really is that hard.
You can play the game below, but we recommend going directly to reflectdigital.co.uk/find-50/football-quiz-play to view it in full-screen mode.
Once you’ve wasted as much of your working day on this as you can possibly get away with, tweet us your scores @planetfutebol.
Fancy another challenge? Visit our quiz page for a host of other brainteasers.
Would this inspire you?
It was a brilliant nine years at Chelsea.
Everyone thought he’d be a world beater.
Expecting 100% from you Villans out there.
Paul Pogba was on top form against Stoke on Monday
Has your driving instructor scored for Spurs?
Claude Puel soon turned it around at Leicester.
These are mightily impressive.
The Ox is justifying his decision to leave Arsenal
We all know who’s number one.