1A Sudoku puzzle variation called Samurai Sudoku consists of 5 overlapping Sudoku sub-puzzles.In this book you get: + 80 Samurai Sudoku puzzles+ 20 Samurai Sudoku "X" puzzles (diagonal-sudoku)+ 1 BONUS Killer Samurai Sudoku puzzleDifficulties range from EASY to INSANE.These puzzles come directly from the creator of The Washington Post's Samurai Sudoku puzzles.Samurai puzzles provide five times the challenge, fun and satisfaction