Logic Masters Deutschland e.V.

Rules:

Normal sudoku rules apply: place the digits 1 to 9 once each in every row, column and 3×3 box.

Renban: The pink lines should contain a set of consecutive digits, in no particular order.

Dutch whisper: Adjacent digits on the orange line must have a difference of at least 4.

German whisper: Adjacent digits on the green line must have a difference of at least 5.

Odd/even: Digits in grey circles are odd. Digits in grey squares are even.

Kropki: Digits separated by a white dot are consecutive. Digits separated by the black dot are in a 1:2 ratio.

Negative constraint: All white dots of which at least one cell is outside the jack-o'-lantern (outside both orange and green parts) are given.

Sudokupad