Extreme Sudoku - Volume 1: 50 Extreme Puzzles - The Ultimate Sudoku Challenge

Let's get one thing straight. This book of mind-bending Sudoku Puzzles is not for beginners. These puzzles are extremely difficult. Compiled by Professor John Power, they are designed to stretch even the most proficient Sudoku players. There are no easy answers in this book. In fact there are no answers in this book at all. If you are the kind of puzzler who constantly finds themselves turning to the back pages for the solution - this book is not for you. The only way you will complete a grid is by methodically working your way through it. Are you up for the Extreme Sudoku Challenge? If so... Bring it on. 50 of the toughest Sudoku puzzles on the planet.