Logic Masters Deutschland e.V.

SudokuPad link (via tinyURL)

Normal Sudoku rules apply. Place the digits 1 through 9 in each empty cell. Digits must not repeat within the same row, column, or box.
Renban: Digits along pink line form an unordered set of consecutive digits
Aces high: the digit 1 can count as either a 1 or a 10. For example, the digits 189 or 123 would make up valid renban, but 129 would not;
The digits 1 and 9 may never be orthogonally adjacent.