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X-Treme Sudoku
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Absolutely NastyŽ Sudoku...
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Codebreaking: A Practical...
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The Times KenKen Book 3: The...
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You're the Captain!: A...
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Expert Sudoku
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How to Become a Top Sudoku...
Mike Colloby
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Riddles in Mathematics: A...
Eugene Northrop
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The Sunday Times Teasers Book...
The Times Mind Games,
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More Original Sudoku
Editors of Nikoli Publishing
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Without Words: Mathematical...
James Tanton
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The Ordnance Survey Journey...
Ordnance Survey
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The Times Ultimate Killer Su...
The Times Mind Games
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The Times Ultimate Killer Su...
The Times Mind Games
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Will Shortz Presents the...
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Kakuro, Level One
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Kakuro, Level Three
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