How To Play Sudoku
While Sudoku puzzles can be rather challenging, the rules and general game play are simple and straightforward.
1. Each column, row and nonet needs to contain the numbers 1-9, and each number can only be used once.
2. The sum of all the numbers in each and every column, row and nonet must be the same as the small number printed in its corner. For traditional Sudoku puzzles like this one, the sum must equal 45.