Sudoku 'Off the Grid' Puzzle Book for Adults Edition #3

Captain Peter Books brings you a series of Sudoku Puzzles that are in a grid 16 x 16, which is a variation on the original 9 x 9 grid Sudoku. Edition #1 is an introduction to the 16 x 16 grid format and is ideal for beginners and those looking for something more in this fun mental math game. Edition #2 onwards are more difficult and are in large print format for easier reading and will assist calculations. Solutions are at the back with each book.