Logic Masters Deutschland e.V.

Normal sudoku rules apply.

Standard rules for ten lines (gray), between lines (connecting two circles), renban (purple), and black dots apply. [See below for details.]

There are no negative constraints of any kind.

Ten Lines: Digits along gray lines must be broken into one or more contiguous groups of cells that add to ten. Such groups cannot overlap. Digits may repeat within such sums if allowed by other rules. For example, 513173 is a valid fill for a length 6 line, because it can be broken into 5131 and 73, each of which sum to 10.

Renban Lines: The purple line in the grid is a Renban line. Digits on a renban form a set of non-repeating, consecutive digits in any order.

Between Lines: Digits along a line connecting two circles must lay strictly between the digits in the circles.

Black Dots: Digits separated by a black dot have a 1:2 ratio, meaning one is exactly double the other. Not all dots are necessarily given.

Have fun, leave a comment if you enjoy the puzzle!

Play this puzzle on SudokuPad

PS: I stream solving sudoku like puzzles three days a week. You can check out the channel, as well as some videos I have made about setting puzzles, at my YouTube channel here.