Logic Masters Deutschland e.V.

Normal Sudoku rules apply. Each row, column, and 3x3 box contains each number from 1 to 9 exactly once.

Disjoint Sudoku rules apply. Cells that appear in the same position relative to their default regions must not contain the same number.

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.