OBSERVER SUDOKU
HOW TO PLAY: Fill in the grid so that every row, every column and every 3x3 box contains the numbers 1 through 9 only once. Each 3x3 box is outlined with a darker line. Numbers are preplaced to get you started.
HOW TO PLAY: Fill in the grid so that every row, every column and every 3x3 box contains the numbers 1 through 9 only once. Each 3x3 box is outlined with a darker line. Numbers are preplaced to get you started.