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. Increase your brain activity by answering a crossword puzzle, actually make that 41 crossword puzzles! This book is a collection of the most challenging crosswords picked from random facts. Pick a copy of this book when you're at a loss for words, or when you're too tired to work. The relaxing yet mind-boosting effects of crosswords will surely appeal to adult learners. Grab a copy now!