QUIZ: How many of these countries can you name from their outline?

Test your mettle with our latest fiendish geographical quiz

So far we've tested you on your world flags, and even asked you to identify cities based on their sunsets - but our latest brainteaser takes it up a notch in the difficulty stakes.
Just so you know, the outlines are of the countries in isolation. So the surrounding white space could be other countries, or it could be ocean.

On your marks - get set - QUIZ!