Classic Sudoku rules apply. Additionally, each main diagonal ( marked by dotted lines ) must contain digits from 1 to 9.
Classic Sudoku rules apply. Additionally, each main diagonal ( marked by dotted lines ) must contain digits from 1 to 9.
Classic Sudoku rules apply. Additionally, each main diagonal ( marked by dotted lines ) must contain digits from 1 to 9.
Rules: Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box. For...