Valentine's Day Sudoku puzzles: 200 Hard Sudoku Puzzles Book /Book To Challenge Your Brain / Sudoku For adults / "8.5x11"

This book contains 200 classic Difficult Sudoku puzzles. Show your appreciation to your loved ones by offering them this book as gift on valentine's day, whether you want to challenge your brain young and active, develop logical thinking or just keep yourself busy to avoid boredom... this book will help you with it's unique Sudoku Puzzle.•200 Sudoku Puzzles •2 Puzzle per page•8.5 x 11 (inches) •Perfect as a gift for sudoku