This puzzle is a Sudoku puzzle. Instead of numbers, you will use
the letters A-Y. (If you aren't familiar with Sudoku puzzles,
google it and try a few simple ones first.) Unlike the typical 9x9
grids that you see in the newspaper sudokus, this is a 25x25 grid.
The objective is to fill the 25x25 grid with letters so that
each column, each row, and each of the twenty-five 5x5 sub-grids
that compose the grid contains all of the letters from A to Y.
In addition, the same letter may not appear twice in the same
row or column or in any of the 5x5 sub-grids.
This puzzle is not actually very hard, but it will take some
time. Hence the relatively low "2" difficulty rating.
Once you have solved the sudoku, you will then have to figure
the missing digits of the coordinates.
The coordinates are:
The attachments include the grid as well as a separate grid without
the symbols. There is also an attachment of the coordinates using
the Wingdings.
You can check your answers for this puzzle on
Geochecker.com.
CONGRATULATIONS TO ColoradoTrekker FOR THE FTF!