The Total Brain Workout: 450 Puzzles to Sharpen Your Mind, Improve Your Memory & Keep Your Brain FitFeb 17 2009by Marcel Danesi
Patterns of the Universe: A Coloring Adventure in Math and BeautyDec 1 2015by Alex Bellos and Edmund Harriss
Things to Make and Do in the Fourth Dimension: A Mathematician's Journey Through Narcissistic Numbers, Optimal...Dec 2 2014by Matt Parker
Brain Games Picture Puzzles #4: How Many Differences Can You Find?Jun 1 2008by Editors of Publications International Ltd.
Of Course!: The Greatest Collection of Riddles & Brain Teasers For Expanding Your MindAug 7 2014by Zack Guido
Mensa 10-Minute Crossword Puzzles Page-A-Day Calendar 2016Aug 15 2015by Stanley Newman