Normal sudoku rules apply. Both marked main diagonals must also contain all of the digits 1 to 9, once each. In cages, digits must sum to the small clue in the top left corner of the cage. Digits cannot repeat within a cage. Clues outside the grid give the sum of the digits along the indicated diagonal. Digits can repeat along these diagonals (providing normal sudoku rules are still obeyed).
If you prefer to play directly in sudokupad then click below.
