Logic Masters Deutschland e.V.

There is a lovely sight on this small beach: some seaweed, a few rocks, and two brilliant, pink pearls. Try filling in the puzzle

1. Normal Sudoku rules apply

2. Over quadrants with pink diamonds, the digits must sum to 20 or more. NEGATIVE CONSRTAINT: digits without a pearl must sum to less than 20.

3. Digits across Kropki dots differ by a 1:2 ratio

4. Digits across German Whisper lines differ by at least 5

Here is the SudokuPad link, and have fun!