The cache is not at the posted coordinates. It is located on Bartibog Island and is not accessible by car.
It is at..........N 47 05.X........W 065 21.Y
where......X = (Ax2-10)x4......Y = (B+105)x4
You connect horizontally or vertically adjacent dots to form a meandering path that forms a single loop. The loop must not have any branches and must not cross itself. The clue numbers indicate how many lines surround the cell. Empty cells may be surrounded by any number of lines (from 0 to 3).
You may find it helpful to make Xs between dots that cannot be connected.
The above solved example makes the rules clear. Notice how there is a single loop drawn, and how the loop travels past each clue the given number of times.
For example, a '3' clue must have 3 of its sides forming part of the loop, as in the top-left number in this example. Conversely, if a square has a '0' in it, as in the left column here, then there must be no parts of the loop neighbouring those clues.
Not all parts of the puzzle grid have numbers in - it's up to you whether the loop passes by these areas or not, and how many times. It's not necessary to use all of the grid dots in the solution, as you can see in this example.
Every one of these puzzles only has one possible solution, and it can always be reached via reasonable logical deduction.
In order to find A and B you must solve the following puzzle. A equals the sum of the inside numbers and B equals the sum of the outside numbers
You can check your answers for this puzzle on GeoChecker.com.