2025 Killer Sudoku: 365 Hard (9×9) Puzzles for Every Day of the Year (Game Calendars Series)

Great gift for family, friends, or work colleagues This Killer Sudoku book is packed with the following features: 1 365 Hard puzzles for every day of the year 2 Each puzzle is guaranteed to have only one solution. 3 Answers to every puzzle are provided. 4 Four puzzles per page (8.5 x 11 inches). Playing Killer Sudoku on a daily basis helps to keep an active mind, and players often see improvements in their overall concentration. Includes free bonus puzzles you can download. 2025 Killer Sudoku Book offers hours of entertainment for adults of all ages, from young adults to seniors hearts We hope this will be an entertaining and uplifting mental workout, enjoy Killer Sudoku hearts