Logic Masters Deutschland e.V.

This puzzle was my entry for the second week of Scojo's imposter challenge. I was supposed to make a puzzle imitating the style of Piatato which was a huge ask. I never expected to fool anyone with this puzzle. You can see Piatato's own puzzle here. I suspected he might make a U-Bahn but knew that there was no way I could learn to set that type of puzzle within a week. So I went for Yajilin instead. Even so, I was completely new to Yajilin, so this was still a challenge. The turning corners on odd digits idea came from an old Madmahogany puzzle which I found featured at CtC. I noticed that Piatato had made a few puzzle inspired by rule combinations that other setters had used, so I thought this was a valid approach. Madmahogany's puzzle used a lot of given sudoku digits. For mine I decided to use sandwich sums instead but I still ended up needing a few givens to make it work.

Solve in Penpa+

Sudoku: Every row, column, and box must contain the digits 1-9 with no repeats.

Yajilin: Digits in cells with arrows give the number of shaded cells in the given direction. Shaded cells cannot touch orthogonally. The remainder of the grid (excluding shaded cells, cells with arrows or given digits) must be a part of a single continuous non-intersecting loop. Also, the loop can only turn in a cell containing an odd digit.

Sandwich sums: Numbers outside the grid give the sum of digits between the 1 and 9 in that row or column.