Toto je Challenge cache.
Je uložena na výchozích souřadnicích.
Cache je možno zalogovat kdykoliv v logbooku jako wn/poznámka, ale jako found na webu až v okamžiku, kdy jsou splněna požadovaná kritéria.
Úkol:
Nález keší založených ve všech měsících roku 2004.
Zde je příklad splnění:

Zde je možno splnění ověřit:
Do logu dej důkaz o splnění.
Finden Sie mindestens einen Cache, der in jedem Monat des Jahres 2004 erstellt wurde.
Have found at least one cache hidden in each month of 2004.
What is a challenge cache?
A challenge cache requires seekers to find an associated physical cache, and to find an additional set of geocaches as defined by the challenge owner. Challenge caches encourage geocachers to set and achieve fun goals. Examples of challenge caches: find a cache every day of the calendar year, or find one for every Difficulty/Terrain combination. Challenge caches must be listed as Mystery caches, must have the English word "challenge" in the title, and must include the challenge cache attribute. Challenge cache pages must include a link to a web-based challenge checker. The container must be placed at coordinates on the cache page, either as posted coordinates, or as a visible final waypoint. The physical cache must be findable without contacting the owner. Challenge cache criteria must come from information broadly available on Geocaching.com such as on the statistics page, cache placement dates, types, attributes, souvenirs, etc. must be verifiable through information on Geocaching.com. Challenge cache owners must demonstrate that there are plenty of qualifying caches to meet the challenge at the time of publication.