This is a Challenge Cache for those cachers out there that enjoy pushing themselves.
In order to qualify for this Challenge, you must find 50 Mystery/Unkown type caches in a single calendar day! These caches can be any '?' type cache including other Challenge caches and you may include this cache if done on the same calendar day as the other Mystery caches. A single day is between 12:01 AM and 11:59 PM on that calendar day.
As a bonus for those super cachers out there, anyone that is able to find 100 Mystery/Puzzle caches in a single day you may claim a second smiley on this Challenge. For anyone going out for the double-smiley, remember to allow for dnfs. If you're like me, you'll probably need to attempt about 10% more in order get 100 finds.
To verify the requirements, list in your log the date you completed the Challenge along with the first and last Unknown type cache of that day. If you want to share a bookmark list of the caches you found for the Challenge that would be great but not required. Any date you completed this Challenge qualifies you for this Challenge whether before or after publication of the Challenge.
Congratulations to Running Jayhawks for the well-earned FTF!!!