✓ Great gift for family, friends or work colleaguesThis Logic Puzzles book is packed with the following features:① 1000 Binary Puzzle (12x12) from Easy to Hard (333 Easy - 334 Medium - 333 Hard).② Each puzzle is guaranteed to have only one solution.③ Includes free bonus puzzles you can download book (Logic Puzzles & Brain Games for Adults) ④ Answers to every puzzle are provided at the back of the book.⚠ Six puzzles per page (8.5 x 11 inches).Playing Binary Puzzle is not just a fun way to pass the time, due to its logical elements it has been found as a proven method of exercising and stimulating portions of your brain, training it even, if you will and just like training any other muscle regularly you can expect to see an improvement in cognitive functions. Some studies go as far as indicating regular puzzles can even help reduce the risk of Alzheimer's and other health problems in later life.Completing the Binary Puzzle regularly helps the brain process both problem solving and improves the logical thought process with the use of deductive reasoning, which can also be applied to approaching real-life challenges in a different manner.★★★★★ The Giant Book of Binary Puzzle offers hours of entertainment for adults of all ages, from young adults to seniors ★★★★★We hope this will be an entertaining and uplifting mental workout, enjoy The Giant Book of Binary Puzzle.