Logic Masters Deutschland e.V.

Rules:

1. Normal Sudoku rules apply.
2. Diagonal -: Digits cannot repeat along the marked (main) diagonal.
3. Arrows: Digits along arrows sum to the digit in its circle.
4. Little Killer: The clue outside the grid shows the sum of the indicated diagonal, which may contain repeats.
5. Mosaic: Every cell on the grid must be shaded or unshaded. Digits inside cages indicate the number of shaded cells in a 3x3 region centered at the cell containing that digit.