The problem with this is that if you know your geography it’s astonishingly easy, at least in default mode. It’s rare for me to need more than one try—unless, for a totally hypothetical example that has nothing at all to do with one stumper last week, it’s a nondescript atoll in the middle of the ocean, and then it’s as much because you didn’t think it was on the list, like a Scrabble set that unexpectedly includes þ, ð and ß. But you can increase the difficulty level by rotating the country image, or by hiding it: then you have to rely on the distances and directions alone. I should try it that way.