Background Information.
I just happened to be in Washington DC when the very first Sudoku came out in the newspaper. I was immediately hooked. I have even put out a Sudoku puzzle cache before moving to Texas. But a regular Sudoku can now be solved with on-line solvers. Where is the fun in that? So, I found a variation of Sudoku called Irregular Sukoku. The rules are slightly different. After you solve the puzzle, you can use the gird references (in this case D1 = 9) to find the coordinates.
Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and outlined region. Each outlined region is marked by thick borders.
Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and outlined region. Each outlined region is marked by thick borders.
The Final Coordinates are: N 30° 3(A1).(A9)(I1)(H2), W 097° 3(E6).(H9)(G5)(E8)