I have tried many different Killer Su Doku puzzle books but have found this one to be my favorite thus far. The reason is that this book contains 200 puzzles, while many provide 100 or slightly over 100.
Sudoku Series
Sudoku Puzzles Medium
Sudoku Puzzle BOOK
Aletha Sudoku Books
Sudoku Puzzle BOOK
Sudoku Kingdom
T. Z. A. sudoku collection
Aletha Sudoku Books
Sudoku Puzzle BOOK
Sudoku Puzzle BOOK
Sudoku Kingdom
Aletha Sudoku Books
Aletha Sudoku Books
Sudoku Original
Aletha Sudoku Books
Aletha Sudoku Books
Aletha Sudoku Books
Sudoku Kingdom
Sudoku Kingdom
Sudoku Mania
Sudoku Libro
Sudoku Kingdom
Sudoku Kingdom
Sudoku Brain
Sudoku Kingdom
Mega Sudoku 1000
Sudoku Libro
Not So Boring Sudoku
Tewebook Killer Sudoku
Simply Sudoku
Sudoku Kingdom
Simply Sudoku
Sudoku Kingdom
Tewebook Sudoku
Géniale Sudoku
Sudoku Kingdom
Sudoku Kingdom
Sudoku Puzzle Books
Sudoku Syndication
University of Cambridge Local Examinations Syndication Staff
Richard W. Fisher
Marion Lennox
Alice Butcher
Tracy M. Sumner
V.C. Andrews
Jon Sutherland
John Fitzgerald
Suzanne B. Hanser
Werner Abraham
Tony Isabella
Arthur R. Couvillon
Marge Kennedy
Jaco Pastorius
Matthew Sprange
Danielle Kaheaku
Chris Pereira
Malcolm Chalmers
Laura Gates Galvin
Jennifer Riesmeyer Elvgren
Joani Schultz
Lauri Robinson
Angela Thomas
Stephen Gottschalk
Food and Agriculture Organization of the United Nations
Ricardo López Méndez
Suzie Wilks
Aderinola Hotonu
Richard Dungworth
Mike Moreno
Anton A. Reznicek
Laurie E. Rozakis
Bronwyn Scott
Nicole Fulton
Katherine Sorrell
Gregg Wallace
Sabrina Dearborn
Sandra Foy
John Bartlett
Milet Publishing