Get A Map: The answer given for Des Moines is not correct. (3 years, 1 month ago)
GRID SQUAD: Stop using my great name you imposter! (3 years, 4 months ago)
gwil0r: Good grid. I missed out on solving the wall as I didn't get graphite for its group. (7 years, 2 months ago)
GRID SQUAD: It's also CRAP because the topics are obscure. (7 years, 2 months ago)
Ram Dom: Good grid.
It's hard because the topics are obscure - i.e. require specialist knowledge. (7 years, 2 months ago)