Normal sudoku rules apply. Additionally, the digits in a diagonal pointed at by an arrow, sum up to the number behind the arrow. The digits on a diagonal may repeat.
This sudoku may be unlogical, since Jsudoku uses 30 guesses to prove uniqueness.'Just for watching'.
Solution code: 5th row, 5th column
Please note: The German version of this page has changed. It is possible that this page does not contain the latest information.