Lough Muckno - Final Challenge Mystery Cache

The cache is a micro cylindrical container, placed on the shores of Lough Muckno. It contains just a log, BYOP. Coordinates are provided for the closest slipway. Parking and picnic tables are at the same location.

The coordinates will not bring you to the cache. You need to solve the puzzle first

In attempting this cache you will need to use a water craft of some description. Please ensure you take all the appropriate safety precautions. Given the possibility of damp conditions, take the time to reseal the bag and tighten the container lid.

In order to find the right coordinates you will need to solve the puzzle below.

Once you get the coordinates you should be aware that the cache is smaller than the others in the series (deliberately) and you may require some agility to retrieve it.

Each Letter in the grid represents a different number from 1 - 9. Use the clues to help you record the numbers in the right place in the grid

G x G = F + H

B x G x J = A

B x D = D

D + D = G + J

E + H = B + C + F

The formula that will give you the final coordinates is

N 54 6.DAH W 6 41.(E-J)FB

You can check your answers for this puzzle on Geochecker.com.