Logic Masters Deutschland e.V.

My 2nd sudoku. It uses the, as far as I know, new star-sum rule which I introduced in my first sudoku puzzle. With this puzzle I want to present the star-sum idea on a higher level of quality. Have fun solving my puzzle!

Sudoku at Penpa+

Rules:
Normal sudoku rules and star-sum rules apply. A star-sum is calculated as follows: You start from a clue cell (grey stars) and move x cells in each of the four orthogonal directions, where x is the digit in the clue cell. Then you add the four digits in the corresponding cells and the digit in the clue cell itself. In the final grid those five digits must sum to the number given in the bottom-right corner of the clue cell. The grid must be treated as a torus (i.e. if the path to a cell summed up by a star-sum clue goes beyond the edge of the grid it continues on the opposite side of the grid). There is an example below the sudoku.

Example: