Hard Sudoku Puzzles: 200 tough sudoku puzzles

ALL PUZZLES IN THIS VOLUME ARE NEW!
This is a book of difficult Sudoku puzzles.
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.

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