13 Easy Ways To Solve Hard Sudoku Puzzles
You can also write in the margins outside of the cells (the individual boxes of 9 squares inside of larger puzzle). Feel free to take notes or jot down reminders to yourself. Using pencil also allows you to draw on the puzzle. If you use any patterns or uniqueness tests, you may want to visually track what you’re doing by circling or drawing around given cells. Candidates refer to the potential solutions for a given square....