Standard Rundweg rules apply. There are exactly 6 areas outside of the loop, and each of them are one of the 7 pentominoes given in the puzzle! (One of the given pentominoes is not used.) None of these 6 pentominoes touch each other, and they don't repeat. They can, however, be reflected and rotated.
Solution code: Each of the outer pentominoes starting from the top left corner and proceeding clockwise.
on 7. April 2023, 09:28 by Lucx
I love Pentominos and I love Rundwege! Great Puzzle, thank you!
jodid: Thank you!
on 15. May 2022, 02:22 by Geoteve
I think you don't need the rule that the pentominoes can't touch each other, as it's naturally impossible by the slitherlink rules.
on 11. April 2022, 19:18 by jodid
@pieter888 thank you!
on 11. April 2022, 01:27 by pieter888
Loved it, very nice!
on 10. April 2022, 20:52 by jodid
Thanks, Dandelo :)
on 10. April 2022, 13:16 by Dandelo
Penpa link:
https://tinyurl.com/y7m982s2
on 10. April 2022, 05:43 by jodid
Fixed the rules drastically