The ultimate in Killer Sudoku. Each Killer Samurai puzzle contains five interlinked 9x9 Killer Sudoku puzzles for five times the challenge, five times the fun. Each puzzle is ranked from 1 to 5 stars, to stretch puzzlers at all levels. Printed in 8.5"x11" format (216mm x 279mm) to provide maximum working space, this is the perfect challenge for Killer Sudoku lovers everywhere.