The Ultimate Brain Health Puzzle Book for Adults: Engaging Word Games, Challenging Logic Puzzles, Relaxing Activities, and Brain-Boosting Fun for Focus and Mental Clarity Duane, G. Pitts
The Ultimate Book of Mixed Puzzles: More than 450 Puzzles for Adults Including Word Searches, Crosswords, Sudoku, Mazes and More! (Part of the Brain Busters Puzzle Collection) Parragon Books
Murder Mystery Logic Grid Puzzles: 75+ Puzzles, 20 Separate Cases to Solve (Murder Mystery Puzzle Case Files) Bonty, Books, McGee, Zips