This cache is not at the listed coordinates.
To find the cache you must solve the following problem:
Solve the puzzle by placing a single digit, 1 through 9, in each of the white squares; some numbers have already been placed to get you started. The conditions for placing the digits are:
- The numbers in the grey squares along the top must each be the sum of the four digits directly below them.
- The numbers in the grey squares along the left side must each contain the sum of the four digits to their right.
- The number in the top left corner mustl be the sum of the four digits in the top-left to bottom-right diagonal.
When you have solved the puzzle use the numbers in the boxes with grey letters to solve for the coordinates:
N 42 07.ABC
W 075 57.DEF
Then… good hunting and don't forget to admire the view!