Start with Chile. Then guess its southernmost neighbour (by point on land). Then guess the southsern neighbor of that country, etc... When you reach a dead end, go back and choose the next southernmost-neighbor. Finally, when you're done with continents continue onto the islands.
Overseas territories don't count, but overseas regions do
Yes: France/Brazil, Morocco/Spain
No: France/Netherlands, UK/Spain
Dubious land borders not considered: Sri Lanka/India, Qatar/UAE
Are you considering the border between Tanzania and DRC as "dubious"? Perhaps because it is in a lake? If so, should you not state this somewhere?
Also, how do you get from Georgia to Bangladesh? Working backwards from Georgia, you get to Russia before you reach Burma or India, so surely the next country ought to be Mongolia?
Love the idea but question when going back: shouldn't Bangladesh come after Scandinavia? India is a lot farther back in the chain than Russia, and I think Mongolia and the Scandinavia countries should finish up Russia before going back to India or Myanmar to hit up Bangladesh?
Also, how do you get from Georgia to Bangladesh? Working backwards from Georgia, you get to Russia before you reach Burma or India, so surely the next country ought to be Mongolia?