IMPORTANT - EBOOK edition of this book is an PRINT BOOK REPLICA and not used for completing puzzles on the device. The eBook is a preview providing useful content on the benefits of crossword, sudoku and other puzzles for both children and adults, also showing the actual puzzles available in the physical copy of the book. A BONUS link in the book lets you download books with high quality crossword puzzle and sudoku book PDF pages with dozens of puzzles with clues and answers that readers can PRINT. The download is optional, it is not the main function or purpose of this ebook - PRINT REPLICA. Crossword puzzles provide good and clean fun for adults who want a break from the daily stress at work. They are mind boosting exercises that fuel your love for continuous learning even outside any institution. For every set of crossword puzzle you find in this book, you will be asked questions on history, math, geography, science and language and so on. Grab a copy today!