Logic Masters Deutschland e.V.

Normal and Diagonal Sudoku rules apply. Each row, column, 3x3 box and the positive diagonal (from top right to bottom left) contains each number from 1 to 9 exactly once.

Killer Sudoku rules apply. The sum of all numbers in a cage (marked with dashed lines) must match the small number printed in its corner. No number appears more than once in a cage.

Arrow Sudoku rules apply. Digits along an arrow in the grid must sum to the digit in its circle. Digits may repeat along the arrows.

The puzzle is also available online.