The cache is not at the posted coordinates. This cache requires that you download the Geocaching Adventure Lab app from your app store. Once installed, and you are close to the starting location, open the app. The closest adventures will be displayed. You will need to choose the "Queanbeyan, older than Canberra" Adventure Lab cache. This adventure will take you to 5 locations - each location will require a question to be answered and can be done in any order. Once you have correctly answered the question at each location a clue for the final coordinates for this cache will be revealed.
GZ is in a scenic location near where the first reported golf game in Queanbeyan was played in August 1896. According to the Queanbeyan Age of the 15th August 1896, three prominent men in the town, together with several others played an impromptu game on the western side of the river starting from the Glebe Park across the Hayes Estate up to the Courthouse which was beside the present Courthouse in Farrer Place.
To find GZ you need to solve this
S 35 (E-A)(B-D).(B-A)(D+E)(C-E)
E149 (B-E-A)(C-D).(B-E)(A+B)(A+D+E)