Nathan Haselbauer
Nathan Haselbauer has written at least 3 books. Their most popular book is The Mammoth Book of Sudoku: 400 New Puzzles - The Biggest and Best Collection of Sudoku Ever with 1 save with an average rating of -⭐.
 The Mammoth Book of Sudoku The Mammoth Book of Sudoku: 400 New Puzzles - The Biggest and Best Collection of Sudoku Ever
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 60-Second Brain Teasers Pencil-Free Puzzles
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 What's Your IQ?; Self-scoring Tests . Etc.
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