Logic Masters Deutschland e.V.

Normal sudoku rules apply.

Any two cells separated by a king's move (in chess) cannot contain the same digit.

Digits in a circle appear at least once in the 4 surrounding cells.

Digits cannot repeat within a cage.

Cage totals equal the the highest digit in the cage x2, or in other words the rest of the digits must equal the highest digit of the cage, (see example below).

Link to puzzle

Example