Logic Masters Deutschland e.V.

If you haven't seen this rule before you might like to try this one first:
Shifted X-sums 2
If you like these puzzles and you'd like to try a fully encrypted version, check out this one:
Happy Halloween

Rules:

Normal sudoku rules apply.

Clues outside the grid indicate the sum of the first X digits from the Nth cell from that side, where X is the digit in the Nth cell and N is the digit in the first cell from that side.

Example: in a row with 514839762 the clue from the left would be 19 (3+9+7) and from the right would be 37 (6+7+9+3+8+4).

One of these clues has been partially encrypted. The 3X clue means that that clue is thirty + the digit in r7c1.

Purple renban lines contain a set of consecutive digits in any order.

Try it here.

Have fun!