Logic Masters Deutschland e.V.

• Normal sudoku rules apply:
  In every row, column and in every 3x3 box the digits from 1 to 9 have to appear atleast once.
• XV:
  Cells joined by an X or V must sum to 10 (X) or 5 (V).
  not all X and V given.
• German whisper lines:
  Two cells connected by a (green/not so square boxes)German whisper line must have a difference of at least 5.
• Dutch whisper lines:
  Two cells connected by a (orange/square boxes)Dutch whisper line must have a difference of at least 4.

Play the puzzle here:

Play in Sirxemic’s Sudokumaker or in Sven's Sudokupad.