Logic Masters Deutschland e.V.

Play on SudokuPad

Normal sudoku rules apply.
Numbers outside the grid indicate the sum of the closest three digits in that row or column.
Yellow line: Digits along an Alternating Parity line alternate between odd and even.
Purple line: Digits on a Renban line form a set of non-repeating, consecutive digits in any order.
Black line: Adjacent digits on a Black Kropki line have a 1/2 ratio.
Green line: Adjacent digits on a German Whispers line have a difference of 5 or more.
Orange line: Adjacent digits on a Dutch Whispers line have a difference of 4 or more.
Red line: Adjacent digits on a Belgian Whispers line have a difference of 5 or more, or a sum of 5 or less.

Note: The Renban line is the same as if it were a 9-cell S-shaped line.