This is a big book of 1500 very hard Sudoku puzzles. Solutions are also included for every puzzle. The format is 50 puzzles, in a 9 by 9 game, followed by the solutions. Then 50 different puzzles followed by the solutions, and on and on, with a total of 1500 different puzzles & solutions in this book to enjoy.The solutions are nice to have. You'll want to try not to peek, but if you get stuck, they're there to help. If you're looking for a highly challenging Sudoku book with a huge amount of puzzles, your search is over.
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