WARNING: This Sudoku book is not for the faint of heart This is truly a Sudoku book like no other.
Frustrating, exasperating and.
Exercise your brain, improve your concentration and stimulate your mind with These challenging puzzles.
This awesome Puzzle book is designed for experienced Puzzle solvers who are looking for an extreme challenge.
With 200 of the hardest Puzzles ever created, it is guaranteed to provide you with hours and hours of mind-melting fun.
WARNING: This Sudoku book is not for the faint of heart This is truly a Sudoku book like no other