This puzzle was created by Jakhob and wooferzfg, and it is a variant of U-Bahn.
If you are unfamiliar with U-Bahn, here is a guide that covers the core logic.
Draw a loop network through the centers of some cells, which may branch or turn, but may not have any dead ends.
A clue outside the grid indicates how many times the corresponding line shape (i.e. a cross, branch, straight line, or turn) appears in the corresponding row or column, irrespective of the line shape's rotation.
Within a cage, any cells that are visited by the loop network must have the same line shape, irrespective of rotation. Different cages may have different line shapes, and cages may be empty.
Solution code: For each column except the last, from left to right, the number of lines leading to the right from that column
on 10. December 2023, 10:27 by Christounet
Superb puzzle ! Very clear logic all the way, that got a bit harder for me towards the end. Thanks :)
on 2. May 2023, 15:47 by Agent
Great puzzle, the cages add some interesting layers of logic!
on 29. April 2023, 01:40 by Piatato
Awesome puzzle!
on 28. April 2023, 22:39 by marcmees
Fantástic puzzle.thanks
on 28. April 2023, 16:46 by wand
smooth and surprising logic!
on 28. April 2023, 03:30 by wisty
This is the best genre
on 27. April 2023, 01:55 by polar
Thoroughly enjoying the current u-bahn revival on the portal. Thank you!
on 26. April 2023, 23:57 by KNT
I have solved nearly all the subways on the portal, but this definitely takes the prize for the best start.