Logic Masters Deutschland e.V.

The Rules:

1. [Sudoku] Normal sudoku rules apply - fill every row, column, and region with the digits from 1 to 9 once each.
   
2. [X-Parity Differences] Clues outside the grid describe the difference between the sum of the even digits and the sum of the odd digits in the first x cells seen from the direction of the clue where x is the digit in the cell next to the clue.
   
   Example: 314259876 would have a 0 on the left hand side because (3+1) - (4) = 0 and a 5 on the right because (5+7+9) - (6+8+2) = 5

The Puzzle: Try it on Sven's Sudokupad