This is the third in a series of five exciting new Sudoku books being published by Puzzle Emporium. Each book contains 200 Sudoku puzzles, with solutions, that come in five different difficulty levels. The levels of difficulty are easy, medium, hard and very hard with the final book containing random puzzles that are mixed in their awkwardness! This particular book is aimed at any Sudoku player and contains puzzles that could be described as hard in difficulty. Have fun and, if you enjoy our book, please investigate some of the other Puzzle Emporium publications.