Now that winter days are upon us, I bring you a second rainy-day cache. This is an urban micro cache, located in my fair city of Somerville (in my opinion, a woefully underrepresented region, geocache-wise). But to figure out where the cache is hidden, you’ll need to solve four Sudoku+ puzzles, each containing two digits of the coordinates:
42 2A.BCD N
71 0E.FGH W
IMPORTANT:
The cache was moved from these original coordinates by an offset of (N + 0.007) and (W - 0.003)
The Geochecker below takes the coordinates AFTER this offset correction.
But wait. Why do I call these Sudoku+ puzzles? Because they are not ordinary Sudoku puzzles. In normal Sudoku puzzles, you put a digit at each square, so that every row, every column, and every 3x3 box, contains the digits 1 through 9 ( click here for details and examples ). But in Sudoku+ there is one additional rule: each of the two diagonals must also contain the digits 1 through 9.
Sudoku+ puzzles are a special case of Sudoku. So if you use a regular Sudoku-solver, it will alert you that there are many solutions. But only ONE solution adheres to the additional diagonal rule. Fortunately for you, all of these puzzles can be solved using logic alone (i.e. you do not need trial-and-error).
Notes:
* There is lots of parking near the cache site.
* You can check your answers for this puzzle (after applying the offset) on GeoChecker.com.