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The Guardian Sudoku 2 : A collection of more than 200 tricky puzzles
£11.33Welbeck Publishing Group
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The Times Big Book of Ultimate Killer Su Doku book 3 : 360 of the Deadliest Su Doku Puzzles
£12.48HarperCollins Publishers
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The Times Samurai Su Doku 11 : 100 Extreme Puzzles for the Fearless Su Doku Warrior
£13.63HarperCollins Publishers
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