16 x 16 Sudoku (Hexadoku) Volume 1: 100 Easy to Difficult Letter & Number Combination Puzzles

* 100 Original Hexadoku PUZZLES & FULL SOLUTIONS: If you enjoy traditional Sudoku puzzles, it's time to step up to a new challenge and try Hexadoku! * HEXADOKU: A Hexadoku puzzle is built using 16 X 16 squares instead of the 9 X 9 squares in a traditional Sudoku puzzle. The Hexadoku puzzles in this book are solved using a combination of letters and numbers. * 3 DIFFICULTY LEVELS: Whether you are a pro or just starting to play sudoku puzzles, you will find Easy to Hard level in this book.* ENTERTAINMENT VALUE: This is a sudoku book like no other. With 100 puzzles inside, it is guaranteed to provide you with hundreds of hours of fun.* FOR ADULTS & KIDS: Puzzles are appropriate for both kids and adults!* EASY-TO-READ FONT: Puzzles are printed in a large font on 8.5 x 11 inch paper, so that you will never suffer from eye-strain while doing them.* ONE PUZZLE PER PAGE: Each page contains only one puzzle to keep you focused or to enable you to keep notes in the margin.* PRINTED ON HIGH-QUALITY PAPER: Puzzles are printed on 60-pound high quality white paper so you can use pencils or pens without worry of bleed-through.* KEEPS YOUR MIND HEALTHY: Sudoku puzzles are a great way to keep your mind engage. * WONDERFUL GIFT: If someone in your life loves sudoku puzzles, you won't find a more unique and substantial gift than this book.