How many states have you found caches in? Have you ever dashed 20, 30, or 50 miles, gotten off the highway at the first exit, and found a couple quick park-and-grabs to claim a new state? I have, but it can be a lot more satisfying to make a plan, find some good caches, and even find different cache types.
This challenge is for people who do the latter. To qualify for this challenge, you must have found 50 different icons in different states.
For example, if you've found traditional caches, multicaches, an unknown cache, virtual cache and earthcache in Wisconsin, that's five icons in one state, and you'll need forty-five more icons in other states to qualify. If you've found a traditional cache in every US state, and Washington DC, that's fifty-one icons, and you've qualified!
If that seems a little complicated, the checker and it's output should make things clear:

Of course I qualify for this challenge! sgauss has used Project-GC to see if they qualified for this challenge and they did. "50 caches with types from different States" Qualifying 255 / 50, PASSED