Logic Masters Deutschland e.V.

Normal sudoku rules apply.

Arrows - Digits along an arrow sum to the value in the attached circle.

Killer Cages - Digits in a cage sum to the value given in the top-left corner.

Dutch Whispers - Digits along an orange line differ by at least 4 with their neighbors on the line.

Renban Lines - Digits along a pink line form a continuous, non-repeating set in any order.

Even/Odd - Digits in a gray circle are odd, and digits in a gray square are even.