As with a normal garden-variety SuDoku, complete the grid by placing a symbol in each empty cell so that there is one of each symbol in every row, column, 3x3 block and also in each position within a 3x3 block (so, for instance, the 5 in the top row can’t be next to the 1 as there’s already a 5 in the top middle of a 3x3 block). As you can see, not all the symbols are digits. One of the symbols is totally missing – you have to deduce what character it should be. The cache coordinates will become obvious.
Cache contents include a camera and some puzzles. If you could swap in a puzzle, I’d appreciate it.
NOTE: The cache was muggled so I've replaced it with a new model fastened in place with a plastic tie. To release the tie, squeeze its thickest bit and push the other end through. Please replace exactly where it was. The tie can be reused.
