Logic Puzzle Book for Adults Volume 1: 50 Easy to Hard Logic Grid Puzzles - The Real Brain Challenge

Logic Puzzle Book for Adults Volume 1: 50 Easy to Hard Logic Grid Puzzles - The Real Brain Challenge

Logic Puzzle Book for Adults Volume 2: 50 Easy to Hard Logic Grid Puzzles - The Real Brain Challenge

Detective Logic Puzzles for Adults: 50 Crime-Themed Logic Grid Puzzles - Fun, Easy to Hard Logic Puzzles - Large Brain Teaser Book