Posh: Sudoku 2017 Day-to-Day Calendar : Sudoku, the extremely popular puzzle game, requires no math skills to solve. This high-style calendar features a different Sudoku puzzle on each page, ranging from easy to difficult, with the answers on the back. Each puzzle begins with some numbers already provided. Your goal is to fill in the empty squares with the numbers 1 through 9 so that no number appears twice in the same row, column, or 3x3 block. With its bold design, Posh Sudoku makes solving the puzzles even more enjoyable.