ALL PUZZLES IN THIS VOLUME ARE NEW!This is a book of difficult Sudoku puzzles.All puzzles can be solved withoutguessing and have one solution only. If you need help, you can always peek at the solutions.Remember: do not guess!The book is small in size but the numbers areprinted in large font, easy to read._______________________________________hard sudoku, hard su doku, hard sudoko, hard soduko, hard sudoku book, hard sudoko book, hard su doku book, hard soduku book, book with hard sudoku, hard sudoku puzzle book, puzzle hard sudoku book, hard sudoko puzzles book, hard sudoku puzzles,difficult sudoku, difficult su doku, difficult sudoko, difficult soduko, difficult sudoku book, difficult sudoko book, difficult su doku book, difficult soduku book, book with difficult sudoku, difficult sudoku puzzle book, puzzle difficult sudoku book, difficult sudoko puzzles book, difficult sudoku puzzles,expert sudoku, expert su doku, expert sudoko, expert soduko, expert sudoku book, expert sudoko book, expert su doku book, expert soduku book, book with expert sudoku, expert sudoku puzzle book, puzzle expert sudoku book, expert sudoko puzzles book, expert sudoku puzzles,advanced sudoku, advanced su doku, advanced sudoko, advanced soduko, advanced sudoku book, advanced sudoko book, advanced su doku book, advanced soduku book, book with advanced sudoku, advanced sudoku puzzle book, puzzle advanced sudoku book, advanced sudoko puzzles book, advanced sudoku puzzles