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. Ensure an active brain despite ageing by allowing yourself to be constantly exposed to crossword puzzles. These paper and pen activities allow for the creation of memories, and that's how information is stored. You cannot choose what subject to focus on, though, because each set of puzzle will be completely random. Therefore, you only have your knowledge and research skills to trust in order to complete each set.