Sudoku Power

Sudoku is a puzzle based on a small number of very simple rules: Every square has to contain a single number Only the numbers from 1 through to 9 can be used Each 3×3 box can only contain each number from 1 to 9 once Each vertical column can only contain each number from 1 to 9 once Each horizontal row can only contain each number from 1 to 9 onceOnce the puzzle is solved, this means that every row, column, and 3×3 box will contain every number from 1 to 9 exactly once.