Sudoku is a placement puzzle, also known as Number Place in the United States. The aim of the puzzle is to enter a numeral from 1 through 9 in each cell of a grid, most frequently a 9×9 grid made up of 3×3 sub grids (called "regions"), Note that our puzzles are in this form. You are given starting numerals in some cells. Each row, column and region must contain only one instance of each numeral. Good Luck.