The Times Super Fiendish Su Doku Book 1: 200 of the most treacherous Su Doku puzzles (The Times Su Doku)
by . The Times Mind Games
ISBN 13: 9780007580743
Format: Paperback (320 pages) Publisher: HarperCollins UK Published: 01 Oct 2014
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The Times Ultimate Killer Su Doku Book 3: 120 of the deadliest Su Doku puzzles (The Times Su Doku)
ISBN 13: 9780007440658
Format: Illustrated (224 pages) Publisher: Times Books Published: 29 Sep 2011
The Times Samurai Su Doku: 100 extreme puzzles for the fearless Su Doku warrior (The Times Su Doku)
ISBN 13: 9780007241651
Format: Paperback (224 pages) Publisher: Times Books Published: 04 Sep 2006