Logic Masters Deutschland e.V.

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

Polyline: The red line is divided by 3x3 box borders into segments of one of three types, such that no two adjacent segments are of the same type.

Nine-tropy Line: Every four cells must have one digit from each of the sets that sum to nine, that is {1,8}, {2,7}, {3,6} and {4,5}.

Ten-tropy Line: Every four cells must have one digit from each of the sets that sum to ten, that is {1,9}, {2,8}, {3,7} and {4,6}.

Eleven-tropy Line: Every four cells must have one digit from each of the sets that sum to eleven, that is {2,9}, {3,8}, {4,7} and {5,6}.

Black Kropki: Cells separated by a black dot with an integer value "N" have values in a ratio of 1:N.

White Kropki: Cells separated by a white dot have values with a difference of one.

Expected Difficulty: 2.5 stars

---