Puzzle A Day Sudoku Calendar 2017: 365 Hard Puzzles (2017 Sudoku Calendar Books For Adults) (Volume 4) Go to amazon.com Related posts Top 11 recommendation sudoku calendar 2022 DescriptionPuzzle A Day Sudoku Calendar 2017 Book includes the following:365 Hard Sudoku PuzzlesTwo puzzles per pageSolutionsThese daily Sudoku puzzles are a great way to keep your mind active.