Logic Masters Deutschland e.V.

Nonconsecutive: Any two orthogonally adjacent cells cannot contain consecutive digits.

Quadruples: Digits in white circles must be present at least once in the cells the clue touches. If a digit appears more than once in a circle, it must be present at least that many times in the cells the clue touches.

Killer Cages: Digits in a cage may not repeat and must sum to the number in the top left corner of that cage.

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