Healthy mind in a healthy body, our ancient ancestors used to say. One of the best exercises for a 'healthy' mind is solving puzzles. By solving puzzles, we exercise the 'muscles' of the brain, improve our cognitive abilities, sharpen our memory and observation skills, expand our thinking, learn to think faster, and generally keep our mind alert.

In the books of this series, you will find a wide variety of puzzles, including: logic puzzles, creative thinking puzzles, visual perception exercises, numerical puzzles, and optical illusions. These puzzles are classified by difficulty levels.

Solve the puzzles from all categories included in the book and enjoy the satisfaction that comes from solving them, while at the same time strengthening and sharpening your mind! Have fun and feel the joy of success!