Logic Masters Deutschland e.V.

This is a standard between line puzzle...

...just without given lines :)

Rules:

Normal sudoku rules apply. Each pair of circles of the same color are connected by a hidden between line. Each between line may not branch, move diagonally, or take up a full 2x2 area. Separate between lines may not overlap. Digits on between lines must be between the digits in their circles.

You can play this puzzle online using:
CtC App
Penpa+

Here are colorblind friendly versions with letters instead of colors:
CtC App
Penpa+

I hope you enjoy!