Logic Masters Deutschland e.V.

Normal Sudoku Rules apply.

Cells a chess king's move apart must contain different digits.

In a cage, digits may not repeat and sum to the total in the top left corner (if given).

On a green German Whisper line adjacent digits differ by at least 5.

Digits separated by a white dot are consecutive.

If two digits are separated by a black dot, one is twice the other.

Not all dots are necessarily given.

Here is the SudokuPad link: One for 2025