Big Book of Ultimate Killer Su Doku Book 1: a bumper deadly killer sudoku book for adults containing 300 puzzles

About Richardson Puzzles and Games

Our passion is to publish books that entertain enlighten and are ultimately thoroughly enjoyed by individuals families or amongst friends. We work with the best authors and illustrators so you can be assured you are purchasing a book containing the highest quality content. We believe in the value of producing beautiful physical books and think carefully about their design and the materials we use. We are also committed to only working with ethical and responsible suppliers and supporting the environment - we print all our books in the UK using paper from FSC sources.