KowaiBaz: I inspected the general area on my way to Connolly this morning. The hiding location is gone, never to return, and I was unable to find an alternative, sustainable location to place a geocache in the immediate environs. I'm sorry to have to let this one go; it was a cheeky puzzle created by tuanbirdy, which I had the pleasure of test driving before publication. I had to solve both sudokus to calculate GZ. My first effort, although the sudoku was correctly solved, yielded values which were mathematical nonsense. I subsequently found the alternative, and correct, sudoku puzzle, sneakily concealed using a technique I had not previously encountered. One of my favourites, but the time has come to let it go. Thanks to all the geocachers for their fun logs.
Sayōnara!