Book excerpt: Classic Puzzle: 500+ Puzzles has a collection of more than 500 unique puzzles with various difficulty levels. If you like solving puzzles the book will keep you entertained for many hours, days or even weeks. It is a perfect gift for a loved one! The book contains: - 25 Math Squares Puzzles (Easy) - 25 Math Squares Puzzles (Medium) - 25 Math Squares Puzzles (Hard) - 25 Hidden Message Puzzles (Word Search) - 25 Letter Puzzles (Easy) - 25 Letter Puzzles (Medium) - 25 Letter Puzzles (Hard) - 25 Cryptogram Puzzles (Easy) - 25 Cryptogram Puzzles (Medium) - 25 Cryptogram Puzzles (Hard) - 25 Crack The Code Puzzles - 25 Math Puzzles (Easy) - 25 Math Puzzles (Medium) - 25 Math Puzzles (Hard) - 25 Sudoku Puzzles (Easy) - 25 Sudoku Puzzles (Medium) - 25 Sudoku Puzzles (Hard) - 25 Maze Puzzles (Easy) - 25 Maze Puzzles (Medium) - 25 Maze Puzzles (Hard) - 1 Mystery Box Puzzle