Logic Masters Deutschland e.V.

Normal Sudoku rules apply.

Killer Sudoku rules apply: The sum of all digits in a cage must match the number printed in its corner, if given. Digits may not repeat within a cage.

Disjoint Group rules apply: cells with the same position in 3x3 boxes contains number from 1 to 9 i.e. no number can repeat in the same position in 3x3 boxes.

Kropki rules apply: Cells joined by a white dot must be in consecutive. Cells joined by a black dot must be in a ratio 1:2. (No negative constraint applies).

Finally, cells containing the same colour must contain the same digit.

This puzzle can be found online at F-Puzzles.