Logic Masters Deutschland e.V.

Normal variant sudoku rules apply: Cells connected by purple Renban lines form a set of consecutive, nonrepeating digits in any order. Digits connected by a black dot are in a 2:1 ratio. Digits connected by a white dot are consecutive. Digits in cages must sum to the clue in the top left corner. Digits may not repeat within a cage.

With the exception of the 2x2 cage, all 2x2 regions must contain at least one low digit (123), one middle digit (456), and one high digit (789).

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