Extreme Sudoku Hard and Difficult Printable Sudoku.. Then try some of our very hard sudoku puzzles. The basic rules of Sudoku are easy. Just place the digits from 1 to 9 in each empty cell. Each row, column, and 3 x 3 box must contain only.

Extreme Sudoku Hard and Difficult Printable Sudoku.
Extreme Sudoku Hard and Difficult Printable Sudoku. from images.template.net

Sudoku. Sudoku Printables Instructions: Step 1: Either select a set of two predefined puzzles/grids from the top dropdown list, or pick individual sudoku puzzles or blank grids using.