Logic Masters Deutschland e.V.

I would've rated this a 1-star except there is one tricky deduction required that is not as telegraphed as everything else.

• Normal Sudoku rules apply: Fill each row, column, and 3x3 box with the digits 1-9 once each.
• Kropki Dots: Digits in cells separated by a white dot are consecutive. Digits in cells separated by a black dot have a 1:2 ratio.
• Along green ("German whisper") lines, digits must differ from their neighbors by at least 5.
• The sum of the digits along an arrow is equal to the digit in the connected circle. Digits along an arrow can repeat if allowed by other rules.

Play online at Sudokupad