The Challenges tab is a tab in a users Profile Stats and it is only available for users with a paid membership, this tab shows the challenge caches that a user has logged and consists of four modules.
This module is a list of all challenges the user has logged. The list shows the date the challenge was logged as found, the country, the D/T-rating, the name and GCcode. If the user has found more than 30 challenges only the first 10 and the last 10 are shown with a link for showing the additional challenges in the middle of the list.
Challenges by found date
This module is a D/T grid showing all 81 combinations of Difficulty and Terrain ratings, with the number of challenge caches found for each combination.
Below the grid is a summary of the number of the combinations, with a value and percentage of those with a difficulty or terrain rating of 3 or more.
Challenged signed (but not yet logged as found)
This module lists all challenges the user has posted a note to but has not logged as found. Per the Geocaching.com guidelines a challenge cache can be signed before fulfilling the requirements and the user can post a note to show they have signed the challenge cache. All noted challenges which aren't logged or owned are listed. For exclusion they can be tagged in the logs with [NOT-SIGNED].
The list shows the date the user first posted a note to the challenge, the country, GCcode and D/T-rating of the challenge. At the far right a green checkmark is shown if the cache has a challenge checker and the user has fulfilled the requirements. If they have not fulfilled the requirements a red 'stop sign' is shown. If there is no symbol the challenge does not have a checker.
- The Challenge guidelines in Geocaching.com's Help Center