Logic Masters Deutschland e.V.

Normal sudoku rules apply

Duplicated Quadruple: Each circle is surrounded by exactly the same four digits---to be determined by the solver.

Clones: The two grey regions are 'clones' of each other. They each have the same digits in the same positions.

Cages: Digits in a cage must sum to the number printed in its corner.

Little Killer:Digits along diagonals pointed to by arrows must sum to the given number. Digits may repeat along the diagonal if allowed by the other rules.

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