Logic Masters Deutschland e.V.

RULE SET:

Normal Sudoku rules apply. Place the digits 1 through 9 in each row, column, and box.

GLOBAL MODULO-3. Every 2x2 square of cells must contain digits of residues modulo 3. One digit from (1,4,7), one from (2,5,8), and one from (3,6,9).

GERMAN WHISPER (GREEN): Adjacent digits along a green German Whispers line must differ by at least 5. Digits may repeat if other rules allow.

RENBAN (PURPLE): Digits along a purple Renban line must be a set of consecutive non-repeating digits, and may appear in any order.

KROPKI DOTS: Black dots are a 1:2 ratio. White dots are consecutive. Not all dots are given.

For our color blind friends:

Renban lines (3 total): The big "positive" in box 1, The 6-cell rectangle in box 9, and the 5-cell "anvil" looking line transversing boxes 4,5,7 and 8.

All other lines are German Whisper.

Click the Link to Play: Sudokupad