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Our Favorite Sudoku Books (Advertisement):
Generate Free Printable Sudoku Puzzles - Sudoku Book PDF
Create your own Sudoku book by generating puzzle sheet PDFs. Choose the difficulty (easy, medium, hard), the number of puzzles per page (1 per page, 2 per page, 4 per page, or 6 per page), and the page size (US Letter or A4). Then you can print off the generated PDF containing the puzzles and solutions!