Scary Sudoku - 300 Freakish Puzzles. Not for the faint hearted: 300 of the scariest, killer Sudoku puzzles. They'll freak you out.

by Jonathan Bloom Paperback details (USA). ISBN: 978-0-9814261-3-6 ISBN-10: 0-9814261-3-1 SUDOKIDS.COM · 2012