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Difficult Sudoku Book: 200 Difficult Sudoku Puzzles
Difficult Sudoku Book: 200 Difficult Sudoku Puzzles
Current price: $9.99
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Size: OS
This is a book of difficult Sudoku puzzles.Some of the puzzles require you to applyadvanced Sudoku solving techniques suchas X-Wing or Swordfish.
However, all puzzles can be solved withoutguessing and have one solution only. If you need help, you can always peek at the solutions.
Remember: do not guess!
The book is small in size but the numbers areprinted in large font, easy to read.
All puzzles in this book are NEW, previously unpublished!