The Ultimate Activity Book for Intelligent Men: Tricky Brain Teasers, Mind Games and Logic Puzzle Book for Adults (Perfect Gift for Men) IQ Street
100 Kakuro Puzzle Games: A game of logical deduction and reasoning using math and numbers to find the solutions. Barron's, Books
Logic Grid Puzzles, Volume 2: From Easy to Fiendishly Hard (Logic Puzzles for Adults – Platinum Collection) Unicorn Books