Love 'em or hate 'em, there seems to be no middle ground with sudoku.
I love 'em, and so when I visited Minneapolis, I was delighted to discover a treasure-hoard of amazing sudoku caches. All were lots of fun, but this one made me tear my hair out, beg for help, and then groan with disbelief when I finally -- finally -- got slammed over the head with inspiration (my geocaching friend, tengwa, was soooo helpful there.) This puzzle was EVIL.
Naturally I had to share the, um, "fun" with my friends here in Utah.
BTW, there is ONE correct answer. If you find yourself with 12 (or more), you are taking the wrong approach. If your attempt to solve takes you more than 5 minutes, you are taking the wrong approach. I'm not kidding.
2024: Had to move the final and update the puzzle. The final location should be accessible, even in winter. It is now a small.
~*~*~ Congratulations to 7ofclubs for the FTF! ~*~*~
The Puzzle
The Coordinates
Thanks to GeoPierce of Minnesota for permission to copy his idea.