Osaka Metro (U-Bahn Hybrid)
(Published on 11. August 2024, 04:56 by sfushidahardy)
My first ever U-Bahn puzzle! I thought it would be fitting to combine it with sudoku. I hope you enjoy it.
- U-Bahn: draw a totally connected 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.
- Sudoku: every row, column and box contains the digits 1 to 9 exactly once each.
- A cell is 'empty' if the loop network does not pass through the cell. Each circled number is the sum of the digits in empty cells touching the circle.
For those unfamiliar with U-Bahn puzzles: I found wooferzfg’s guide to be immensely helpful!
Solution code: 1. For each column besides the last, the number of lines leading right from that column. 2. The digit in the bottom right corner of the grid. (Nine digits in total, no spaces.)
Comments
on 1. October 2024, 07:51 by wisty
really nice, thanks
on 18. September 2024, 13:49 by The Book Wyrm
Very fun puzzle!
An approachable entry to u-bahn, without a lot of the advanced deduction that are often needed for those.
The ruleset was a neat way to combine u-bahn with the sudoku part and led to some nice deductions.
on 2. September 2024, 15:01 by Christounet
Another awesome idea. Thanks :)
on 17. August 2024, 00:52 by nottabird
Must all non-loop cells be around a circled number clue?
Reply: no, that doesn't need to be the case. A cell might be empty without touching a circle-clue.
on 13. August 2024, 11:57 by marcmees
very nice hybrid. thanks
on 12. August 2024, 18:47 by someguy209
Another very approachable hybrid with some very cool logic! The choice of sudoku clue to complement the U-Bahn was amazing, a variety of deductions appeared using them, (each better than the last!)
on 12. August 2024, 13:34 by sfushidahardy
Added Penpa link, courtesy of Piatato
on 12. August 2024, 12:47 by Piatato
Lovely hybrid! Here's a penpa solving link: https://tinyurl.com/24vvmtjs
on 12. August 2024, 00:46 by yttrio
Very fun puzzle! I've only done a few other U-Bahn puzzles, and this was definitely approachable enough on the U-Bahn logic side for a relatively newbie while still having some relatively challenging logic sprinkled in.
on 11. August 2024, 05:58 by sfushidahardy
Added link to guide
on 11. August 2024, 05:07 by MaizeGator
This is a perfect puzzle for anyone who struggles with U-Bahn. Or anyone who doesn't struggle with U-bahn, for that matter. I'm trying to say that the difficulty is extremely approachable and a blast to solve.
