Download or read book The Times Ultimate Killer Su Doku Book 7: 120 Challenging Puzzles from the Times (the Times Su Doku) written by The Times Mind Games and published by Collins. This book was released on 2015-07-02 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Specially compiled to provide the most deadly Su Doku challenge, Ultimate Killer Su Doku 6 is the only volume for Su Doku enthusiasts who need a puzzle that really tests their mettle.