U-Bahn with Extra Regions
(Published on 2. July 2024, 07:46 by wooferzfg)
This puzzle was created by Jakhob and wooferzfg, and it is a variant of U-Bahn. The rules previously appeared in puzzles by uvo and Zzzyxas.
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.
In each cage, every possible line shape must occur exactly once in every possible orientation (one empty cell, one cross, four branches, two straight lines, and four turns). The possible line shapes for each cage are shown to the right of the puzzle.
Solution code: For each row except the last, from top to bottom, the number of lines leading down from that row
Comments
on 4. August 2024, 11:58 by Niverio
That was super difficult and super cool at the same time. Insane.
on 3. August 2024, 14:28 by lupo
It took me two weeks to find the starting point, but that was really worth it. Very clever puzzle, lot of fun!
on 4. July 2024, 18:55 by Agent
Excellent puzzle with some really unexpected and surprising logic! The last cage felt a bit miraculous too.
on 2. July 2024, 23:34 by Jesper
A wonderful puzzle, thanks!
on 2. July 2024, 16:04 by KNT
I can only echo Piatato, unusually good! Fans of the genre should’t skip this one - one of the richest 8x8 puzzles I have solved.
on 2. July 2024, 13:19 by Piatato
This is exactly why I love U-Bahns! So much incredible logic, often very surprising and entertaining. One of my most enjoyable solves in a long time. Thanks a lot!
on 2. July 2024, 12:07 by ONeill
Great puzzle, tough but fair, thanks!
