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Discover summer reading lists for all ages & interests!
Find Your Next Read

Inside you will find:
100 Hard Sudoku puzzles
100 Very Hard Sudoku puzzles
100 Extremely Hard Sudoku puzzles
Solutions to puzzles Included at the back of the book.
Perfect gift for anyone who loves Hard Sudoku
If you are looking for more Sudoku and other puzzles, see our PuzzleProof author page for more amazing Sudoku for all skill levels.
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Take 20% off your first order
Enter the code below at checkout to get 20% off your first order