Logic Masters Deutschland e.V.

Shade two cells in every row and column. Draw a single connected network of lines going through the centers of some orthogonally adjacent unshaded cells. Lines may branch or turn but do not contain dead ends. Clues above and to the left of the grid indicate how many times a given tile, including its rotations, will appear in that row or column. These tiles also have numeric values, indicated in the top left, with empty cells counting for 0. Clues below and to the right give the sum of tiles between the two shaded cells in that row or column.

Something odd happened! Some of my clues are gone! I remember where they were though, so please note that question marks may be any odd number. Best of luck!

Play on Penpa+ here.

This was a birthday present for Piatato who was kind enough to make me a U-Bahn for my birthday, so I returned the favor! Thank you so much for the inspiration! Also, thank you bellsita and KNT for testing :)

For clarity, unshaded cells can be empty, and ?s can be double digit numbers.