Logic Masters Deutschland e.V.

Normal sudoku rules apply.

• X-diagonal sums : Each number outside the grid is a little killer/x-sums clue. The first x values along the indicated diagonal sum to the clue, where x is the first value the arrow points to. If x exceeds the number of cells in the direction, the sum bounces off the edge at a 90-degree angle and continues. (For example, if R7C1 is a 4, the 8 clue includes R7C1, R8C2, R9C3, and R8C4.).


• Doublers : Within this puzzle there are nine doubler cells, which count as double their value for clues. (one doubler in each row, column, and 3x3 box that form a complete set of the digits 1-9).

The puzzle is available online via CTC-App