This Book Features The Following: High quality symmetrical puzzles. Two puzzles per page, set out in a 5.25x8 inch format. Full solutions for all puzzles at the back of the book. Plenty of white space for number scribbling. High quality paperback, not magazine quality. The book is small in size but the numbers are printed in large font, easy to read. Every puzzle in this book has been carefully checked to ensure that each puzzle has only one possible solution.