Title: Logic Puzzles Book for Brain Fitness: 90-Day Challenge to Sharpen the Mind and Strengthen Cognitive Skills Enlarged Print, Easy to Hard!, Author: Lana Barnes Pre-Order Now
Title: Maria Shriver, Patrick Schwarzenegger, and MOSH Present: Sudoku: 200 Stress-Relieving Sudoku Puzzles to Sharpen Your Mind, Author: Maria Shriver Pre-Order Now