X-Treme Sudoku
Editors of Nikoli Publishing
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The Times KenKen Book 4: The...
Tetsuya Miyamoto (Compiled by)
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Brinkstone's Mixed Puzzle...
Brinkstone Press
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Absolutely NastyŤ Sudoku...
Frank Longo
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The Times Mind Games
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Mensa Killer Sudoku: More...
Dr. Gareth Moore,
Mensa Ltd
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Kenken: Lim-Ops, No-Ops and...
Robert Fuhrer (Editor)
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The Times Super Fiendish Su...
The Times Mind Games
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The Times Killer Su Doku Book...
The Times Mind Games
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Mathematical Puzzles: A...
Peter Winkler
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How to Become a Top Sudoku...
Mike Colloby
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More Original Sudoku
Editors of Nikoli Publishing
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Codebreaking: A Practical...
Elonka Dunin,
Klaus Schmeh
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The Times Big Book of...
The Times Mind Games
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The Times Ultimate Killer Su...
The Times Mind Games
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Sudoku for Dummies
Andrew Heron
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Sudoku For Dummies, Volume 2
Andrew Heron,
Edmund James
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Mental_floss Sudoku: It's the...
Frank Longo
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Mind-Blowing Paper Puzzles...
Haruki Nakamura
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The Penguin Sudoku Challenge:...
David J. Bodycombe
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Absolutely NastyŤ Kakuro...
Conceptis Puzzles
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Absolutely NastyŤ Kakuro...
Conceptis Puzzles
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Absolutely NastyŤ Kakuro...
Conceptis Puzzles
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Absolutely NastyŤ Kakuro...
Conceptis Puzzles
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