The name sudoku comes from a shortening of the Japanese phrase suuji wa dokushin ni kagiru, which translates roughly to “the numbers must remain single”.
Welcome to Fudoku! Furagu wa dokushin ni kagiru; "the flags must remain single".
You will see flags at the listed coordinates but you won't see them in this puzzle and the cache is not with them. It is nearby at S33° 36.SSS' E151 09.EEE'

This geocache was part of GC Project: It's Raining Caches 2025.
The project's aim was to create a rain of new geocaches to fall from the sky across the state of NSW at 9am on 19th January 2025 - 1 week before Sydney Geoquest, the first Block Party in the Southern Hemisphere.
Many legendary hiders came together to generously contribute their finest geocaches to build excitement and connection amongst the community and for all finders to enjoy years after the event.
This geocache helped make it rain.