Sudoku Puzzle Book for Adults: Two Puzzles Per Page, Easy, Medium, and Hard with Solutions LIONAR, NILAM
The Ultimate True Crime Puzzle Book: Over 100 Killer Activities for True Crime and Serial Killer Fanatics (Cryptograms, Crosswords, Brain Games, Word Searches, Trivia, Quizzes and Much More) Jack, Rosewood
Classic Game – Matchstick Math Puzzles: A set of brain teasers to improve your thinking and concentration AG-Arthur, Gwara