Logic Masters Deutschland e.V.

Normal sudoku rules apply.

Palindromes - Gray lines contain digits that read the same in either direction.

Region Sum Lines - Blue lines are split by the region boundaries into segments that have the same sum.

Maximum - Cells with arrows pointing outward are greater than their neighbors.

Ambiguous Kropki Ratios - Digits separated by a gray dot are in either a 1:2 or 1:3 ratio. Not all possible dots are given.

German Whispers - Digits separated by a green dot must differ by at least 5.

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