Logic Masters Deutschland e.V.

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

Little Killer Sudoku rules apply. Digits along the indicated diagonals sum up to the number behind the arrow. Digits on a diagonal may repeat.

You may have noticed that there aren't any clues or arrows in the grid...

That's because the clues are two-digit numbers hidden in the killer cages (read them from left to right or from top to bottom). One killer cage belongs to exactly one little killer clue and vice versa.

The solver must also deduce the direction of the little killer clues. For example a blank clue at R5C0 can start at R4C1 (going north east) or R6C1 (going south east). Example

White dots between two cells indicate that those cells contain consecutive digits. No negative constraint.

The puzzle is also available online.