Logic Masters Deutschland e.V.

Normal Sudoku rules apply.

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

Modular Lines: Any run of 3 digits along a teal modular line must include one digit from each of the modulo 3 sets, i.e. one from (1, 4, 7), one from (2, 5, 8) and one from (3, 6, 9). When a line crosses itself, it continues in the same direction until the next cell.

Quadruple: Every digit in a circle has to be assigned to one of the four surrounding cells.