Diagonal Asterisk Frame Sudoku Rules
Frame Sudoku (Outside Sum Sudoku) . Numbers in the outside frame equal the sum of the first three numbers in the corresponding row or column in the given direction.
Additional Rules:
Diagonal Sudoku Rule: Sudoku main diagonals also contain the digits 1 through 9.
Asterisk Sudoku there is an additional area, shown on the grid by shading nine specially selected cells. Those nine cells must also contain 1 to 9.
Frame Sudoku (Outside Sum Sudoku) . Numbers in the outside frame equal the sum of the first three numbers in the corresponding row or column in the given direction.