If you are looking for a challenging word game, this is just the book for you.You'll find 51 puzzles each having 36 hidden words on a 20x20 square grid. Each puzzle has a fun and clever theme like: Movies, Nature, Sports, Astronomy, Geometry, Mathematics and Physics.Words can go horizontally, vertically, diagonally, forwards and backwards.The answers to the puzzles are all full page and conveniently placed in the second part of the book, published in the same order and with the same title of the related puzzle.Let stimulate your mind by solving word search puzzles!