This is called a Jigsaw Soduku puzzle. It is a slightly more
challenging version of the standard Sudoku because of the shape of
the "box". The rules are the same though:
Each row must contain the numbers 0 through 9 once and only
once.
Each column must contain the numbers 0 through 9 once and only
once.
Each box of 10 squares must contain the numbers 0 through 9 once
and only once.
Once you solve the puzzle, the cache will be found at:
North 45 degrees 0A.BCD minutes
West 93 degrees 0E.FGH minutes