To find out where you need to go you will need to complete the following Sudoku. You will notice that there are some shaded squares, and they will give the minutes (and decimal minutes) required to pinpoint where this guy lives. Read Left to Right, and Top to Bottom.
There is a 'twist' tho. With the horizontal numbers (for the Latitude) two consecutive numbers have been transposed. Okay, which two - you only have three choices.
And, from the vertical numbers, the number indicated by the triangle is to be subtracted from the digit in the circle, to give the Longitude numbers.
So the cache can be found at: S32º 0x.xxx' E151º 5y.yyy'
Or, check using below:
