2. Germany and Mexico cannot be clean
(adjacent to the United States) or
exterminated (adjacent to Kenya).
3. Canada cannot be clean (Germany
clue) or exterminated (adjacent to
Kenya and Egypt).
4. Iraq, Poland, Italy and the United
Kingdom are both adjacent to a
clean country and Canada.
5. India cannot be clean (adjacent to
Canada), therefor Spain is clean (Iraq
clue).
6. Column our is the column
mentioned in the Poland clue.
7. Five countries are exterminated (Kenya
clue). Only Brazil, Peru, Thailand and Iran
are not adjacent to a clean country).
8. There is no clean country in the first
row yet, therefor Turkey is clean
(Iraq clue).
9. Croatia cannot be clean (adjacent to Thailand). There
are two clean and two infected countries left
(Nigeria clue). The two clean countries are in row
five (Egypt clue). Russia is infected.
10. If Laos is infected, so is China (Mexico clue). There
are two clean countries in row five (Egypt clue). If
Laos is infected, there is only one clean country in
row five. So Laos cannot be infected. Laos is clean.