Logic Masters Deutschland e.V.

Rules:

Sudoku: Normal sudoku rules apply. The digits 1-9 appear once in each row, column, and 3x3 box.

Quadruple: All digits inside a circle appear in at least one of the four surrounding cells.

Renban: Purple lines contain a non-repeating, consecutive set of digits arranged in any order.

German Whisper: Adjacent digits on a green line have a difference of at least five.

Region Sum: 3x3 boxes separate blue lines into to segments that have the same sums. Different blue lines can have different sums.

Kropki: Black dots separate digits in a 2:1 ratio.

To Play:
SudokuPad