1000 Sudoku Puzzles 500 Hard & 500 Extreme: Hard to Extreme Sudoku Puzzle Book for Adults with Answers
A large collection of 1000 hard and extreme Sudoku puzzles for adults, complete with answers for every grid.
About This Book
This book contains 1000 Sudoku puzzles divided into 500 hard and 500 extreme levels.
Puzzles are created for adult solvers looking for a demanding mental challenge.
Complete solutions are included at the end of the book for every puzzle.
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