Regardless of your age or the flexibility of your memory, the puzzles compiled here by the editor of Ten-Minute Brain Teasersand The Essential Book of Japanese Puzzlesoffer an enjoyable challenge as well as stimulating exercise for your brain. From simple math to anagrams, from spatial puzzles to creative thinking prompts, the puzzles are arranged in a 31-day regimen designed to improve not only your memory but also your concentration, logic, pattern recognition, and problem-solving skills; the pages provide spaces for keeping your score and noting where your brain needs more of a workout.