From Nancy Linde's bestselling puzzle series, this book features 440 all-new exercises to challenge—and improve—your brain’s long-term memory, working mem

Based on the science that shows that people middle-aged or older who solve word games and brainteasers have a significant cognitive advantage over those who do

Give your brain a healthy workout—Anytime, Anywhere. Not just any book of games, this collection by the bestselling author of 399 Games, Puzzles & TriviaChall

Cross-train your brain! Exercising the brain is like exercising the body—with the right program, you can keep your brain young, strong, agile, and adaptable.

The framework of ‘symmetry’ provides an important route between the abstract theory and experimental observations. The book applies symmetry methods to dyna