Math & Logic Problems for Beginners & Seasoned Puzzle Solvers – 8 Pack [Paperback] Penny Press/Dell Magazines Dell Puzzle Books
Logic Problems Spectacular Puzzles for All Ages – 2 Pack [Paperback] Penny Press/Dell Magazines Dell Puzzle Books
Knights and Knaves Logic Puzzles for Adults and Teens: 100 Deduction Puzzles To Test Your Reasoning Skills Feline Puzzles, Press
The Ultimate Brain Games And Puzzles Book For Teens: Tricky But Fun Brain Teasers, Trivia Challenges, Crosswords, Word Searches, Cryptograms And Much More To Keep Your Mind Sharp And Engaged Donovan, Ellis