Logic Masters Deutschland e.V.

Previous Dutch Flat Mate Puzzles
This has been a weekly series since '18 Oct 23'. Here is a spreadsheet link for all the previous puzzles in the series, which also has a few teasers for upcoming constraints/guest setters in the series (subject to change).
This alternative link offers a limited LMD search for Dutch Flat Mates.

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Special Thanks
When Marty Sears appears as a guest on the series, if he uses a constraint that can have symmetry, he will ensure symmetry - Example: Dutch Flat Mates: Multiple Lines. I started setting this with symmetry in mind, and then decided to go further and make it colourful too! Spoiler alert, I am the imposter. - haha

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To play the puzzle, please click the image:

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Puzzle Link: Click Here

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Alternative Link: Click Here (simplified aesthetics)

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Initial Setter Difficulty: 2-2.5 / 5

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Normal Sudoku rules apply
Place the digits 1-9 so that they do not repeat in any row, column, or 3x3 box.

Dutch Flats
Every 5 in the grid must have a '1' directly above it or a '9' directly below it. It may have both, but it doesn't need both.

Maximum Lines
Digits on a line can never be higher than the length of the line.

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Hint to start

Boxes 1 and 9 have some very quick wins by line length. Limiting 5 in Row 9 then does some good work. Arguably, some of the trickier deductions involve hunting the restricted high digits, and not making 5s sad!>

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Next Week
.. is somehow 'Dutch Flat Mates: Episode 150'.