1000+ Sudoku Puzzles Easy to Hard: Sudoku Puzzle Book for Adults with Answers

1000 sudoku puzzles books for adultsThis sudoku book is a perfect tool to train memory and logic and increase concentration. It's the perfect gift for all sudoku fans. The interest of the game lies in the simplicity of its rules, but in the complexity of its solutions. All puzzles have a unique logical solution. All answers are included at the end of the book. The level of problems has been carefully assessed6 problems per page