Are you prepared to put your problem-solving abilities to the test and master sudoku? With this 450-puzzle book ranging from medium to advanced. With this book, you will: * Develop your capacity for problem-solving. * Put yourself to the test with hours of entertaining puzzles. * Change the way you approach life in general and become more clear-headed. * Become a sudoku master to impress friends. Book Details: 150 medium-level 9 x 9 puzzles. 150 hard-level 9 x 9 puzzles. 150 a dvanced-level 16 x 16 puzzles. 4 puzzles per page. Full solutions are included after all the puzzles. This is a great gift for those Sudoku fans.
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