Sudoku Book makes an excellent gift and is perfect for Sudoku players of all levels. You can even buy several copies and compete with your friends to see who can solve more puzzles. - A fresh new sudoku puzzle for every day of the year - 4 levels of difficulty (easy, moderate, hard and very hard) - full solutions for every puzzle at back of the book Tag: sudoku 10000, sudoku 12, sudoku 16x16, sudoku 16x16 extreme, sudoku 2000, sudoku 2017, sudoku 2018, sudoku 25x25, sudoku 36x36, sudoku 3d, sudoku 3d puzzle books, sudoku 3ds, sudoku 400 sudoku puzzles, sudoku 4ever plus, sudoku 4x4, sudoku 5 puzzle books, sudoku 5x5, sudoku 6x6, sudoku and crossword puzzle books, sudoku and word search, sudoku and word search puzzles for adults, sudoku app, sudoku app free, sudoku, sudoku black belt, sudoku board game, sudoku book, sudoku books for adults, sudoku calendar, sudoku calendar 2017 page a day, sudoku challenging sudoku cube, sudoku cube puzzle, sudoku daily calendar, sudoku dell, sudoku desk calendar, sudoku dry erase, sudoku ds, sudoku easy, sudoku easy to medium, sudoku electronic game, sudoku expert sudoku for adults, sudoku for dummies, sudoku for kids, sudoku for kids age 10, sudoku game, sudoku game electronic, sudoku game for kids, sudoku grand master, sudoku grandma, sudoku handheld, sudoku handheld electronic game, sudoku hard, sudoku hard to extreme, sudoku illuminated, sudoku in apps, sudoku in color, sudoku intermediate, sudoku jigsaw, sudoku jigsaw puzzle, sudoku jigsaw puzzle books, sudoku jumbo, sudoku junior, sudoku kakuro, sudoku kids, sudoku killer, sudoku medium, sudoku medium difficulty, sudoku medium to hard, sudoku mini, sudoku one-a-day, sudoku puzzle books, sudoku puzzle books easy, sudoku puzzle books hard, sudoku puzzle books spiral, sudoku puzzles, sudoku samurai, sudoku strategy, sudoku tips, sudoku ultimate, sudoku ultra easy, sudoku underground, sudoku unique, sudoku variety, sudoku very hard