The Times Su Doku The Times Ultimate Killer Su Doku Book 3: 120 challenging puzzles from The Times (The Times Su Doku) - The Times Mind Games (Paperback) 29-09-2011
The Times Su Doku The Times Ultimate Killer Su Doku Book 4: 120 challenging puzzles from The Times (The Times Su Doku) - The Times Mind Games (Paperback) 27-09-2012
