Logic Masters Deutschland e.V.

Rules:

Place the digits 1-9 once each into every row, column, and box.

Adjacent digits along a green Mystery Whisper line differ by at least the digit in the attached circle. No two circles contain the same digit.
Some circles are located on their Mystery Whisper, while the rest are connected to theirs via a dotted line; these dotted lines are purely visual and are not subject to the Mystery Whisper rule.

Play on SudokuPad

Have fun solving!