This is a Challenge Cache
Generously donated by Ardom
Published on behalf of the Sunshine Coast Block Party
4-5 October 2025
Numerology and Gramatica Challenge
Numerology and Grammatica is an Arithmancy textbook used by Third Grade students at Hogwarts School of Witchcraft and Wizardry. Arithmancy is a magical discipline that studies the magical properties of numbers, including predicting the future with numbers and numerology.
You will not need to predict the future for this challenge, though knowing the properties of numbers may be helpful.
To complete this challenge, you need:
- A Puzzle cache on each of 100 unique calendar days
The container is NOT at the posted coordinates. You may visit and sign the log at any time. If you do not yet qualify, you may add a “Write Note”, however you may only log a “Found It” if the checker below gives you the green tick, indicating that you have qualified.
There is no need to attach an evidence list of qualifying caches, nor wait for CO confirmation; if the checker gives you a green tick indicating you have qualified, you are welcome to log your find. The CO can independently verify whether success criteria have been met. You must sign the physical log. You may do this before qualifying, but may only log online as found once all elements are satisfied
There is no restriction on found date or location of qualifying caches. Check to see if you qualify for this challenge using the link below.
This challenge complies with the 2016 Challenge Cache Guidelines, which can be found here.
