1 of 1 people found the following review helpful
Waste of Money,
Verified Purchase(What is this?)
This review is from: The Times Ultimate Killer Su Doku Book 4 (Paperback)
For SERIOUS Killer fans, this book is a joke: Beginner's stuff. I don't understand why the Ultimate Killer 1 was so good (difficult) and this and Books 2 & 3 are so easy. If you like your puzzles to be truly Deadly or Extra Deadly, avoid this like the plague.