The above co-ordinates are not for the cache, but for the Car Parking in Harpole village, where you will have to collect some numbers before you can solve the simple puzzle and find the cache. You will have to copy these numbers, labelled a, b, c into the grid to make it solvable. You then have to solve the grid in order to find the numbers J, K, L, R, S and T, which can then be used to find the cache co-ordinates.
For those not familiar with Su Doku it is not a mathematical puzzle, but a logic problem, so don't let the numbers intimidate you.
The grid is made up of 81 cells, split into 9 3x3 boxes. To solve the puzzle, all you have to do is to write numbers in the cells, such that each row, column and box has the numbers 1 to 9, and that there are no duplications.
On the wall of the Methodist Church nearby there are two telephone numbers: 01604 c21908 and 01604 8b1ba5. Copy these numbers a, b and c into the grid.
The cache is to be found at: N52 14.JKL W000 59.RST
The cache is a plastic 35mm film container, black with a grey lid. It contains a log and a small pencil. The cache is about a quarter of a mile away using public footpaths. Please replace it exactly as found. Watch out for barbed wire
Thanks to Ian Too for agreeing to let us use his idea.