
Sudoku puzzles lie in a grid of 9 by 9 squares, the digits 1 to 9 must appear only once in each row and column. The main grid is split into nine 3x3 grids, the digits 1 to 9 must only appear once in each of these smaller squares too. There are lots of websites which will help you on your way to solving this puzzle.
I'd strongly advise you get your solution before heading to GZ! A hint for the hide is in the cache name.
Congratulations to TuckersTribe on the FTF.
