Logic Masters Deutschland e.V.

Normal Sudoku rules apply. Each row, column, and 3x3 box 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.

German Whisper Sudoku rules apply. Two cells connected by a green line must have a difference of five or more between their digits.

The puzzle is also available online.