Logic Masters Deutschland e.V.

Rules:

Normal Sudoku rules apply. Place the digits 1-9 once each in every row, column, and 3x3 box.

Kropki Buttons: The gray circles with 0-4 clue dots inside of them are kropki buttons. The clue dots indicate exactly how many of each type of kropki dot can be placed on the four cell borders that are touching each kropki button. All possible dots that can be clued by a kropki button are clued.

Black dots, when placed, separate cells with digits in a 2:1 ratio. White dots, when placed, separate cells with consecutive digits.

For clarity, dominoes comprised of 2 and 1 may be clued by a white clue dot or a black clue dot, and which one may vary throughout the puzzle. Also, no cell border may contain more than one kropki dot. Cell borders that are not touched by kropki buttons may separate dominoes that could, but do not, have kropki dots.

To Play:
SudokuPad