Become a Sudoku Champion Gift for Sudoku Lovers and Sudoku Geniuses So, you think you've got the brain-power to tackle really hard logic sudoku puzzles? Do you consider yourself really good in Sudoku. Well, try this extraordinary assortment of sudoku challenges and show off in front of your friends, teachers, relatives and family. Each of these hard sudoku puzzles is designed to stretch your mind to the max. And the level of difficulty increases as you move through the book, even the most expert sudoku puzzle sleuths may have to beg for help! Luckily, the answers for all sudoku puzzles are included. An increasing number of schools are also using these sudoku puzzles to develop the minds of their students. This sudoku book is also ideal when you have lot of time to kill during vacations and you want to do something productive and good for your brain. People who have purchased this book have given us this feedback and termed this book as: - Extremely hard sudoku book Hardest Sudoku Book or Most difficult sudoku book Absolutely nasty sudoku book Puzzle book for Expert Sudokus Daily Hard Sudoku playing for sudoku experts Diabolical Sudoku book