Slip this easy to carry 8.5" x 11" book in your briefcase, carry-on or beach bag, and relax with a puzzle in your spare moments. You can also tear out a page and take it with you. Feature of the book: give you space to note candidates and the sturdy paper holds up well to erasing. make it easier to solve the puzzles when you fold the book back. is very easy to read (even in dim light). - provided at the back of the book with a table of contents that clearly shows where to locate the answers. Go ahead and peek if you get stuck or want to verify your answer.