Keeping your brain sharp and active is important, and puzzle-solving is one of the most enjoyable ways to achieve this. Some of these puzzles look simple at first sight, but when you get deeper, you will realize that they are actually pretty complex. Keeping your brain sharp and active is important, and puzzle-solving is one of the most enjoyable ways to achieve this. Some of these puzzles look simple at first sight, but when you get deeper, you will realize that they are actually pretty complex. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle