Bullet Train
(Published on 11. April 2023, 05:29 by wooferzfg)
This puzzle was created by Jakhob and wooferzfg, and it is a Permaculture that combines a Nurikabe and a U-Bahn.
If you are unfamiliar with U-Bahn, here is a guide that covers the core logic.
Divide the grid into two orthogonally connected areas. One of these areas is a Nurikabe puzzle, and the other is a U-Bahn puzzle.
Every cell in the Nurikabe puzzle is either water or land. All water cells must be orthogonally connected, and no 2x2 area may be entirely water. Clues must be on land cells, and every orthogonally connected area of land cells contains exactly one clue, the value of which represents the size of the area.
Draw a loop network through the centers of all cells in the U-Bahn puzzle, 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.
Solution code: For each row except the last, from top to bottom, the number of lines leading down from that row
Comments
on 13. September 2024, 18:04 by The Book Wyrm
Brilliant puzzle! Fun and very smooth, with a lot of nice logic.
on 12. September 2024, 22:59 by zetamath
I have broken this puzzle so many times over the past months, but I have kept coming back to it because the ruleset is fun and clean.
Once you stop making wrong deductions, the path is very smooth, and by the final time through it I was really flying!
on 1. May 2023, 17:57 by Piatato
Lovely ruleset and puzzle! Smooth and fun solve after I stopped being stupid in the very beginning, haha ...
on 1. May 2023, 16:12 by Agent
Very clever combination of puzzles, some really lovely connectivity deductions. Thanks!
on 29. April 2023, 15:49 by wand
lovely! surprising interactions come from the cohabitation of these two puzzles
on 14. April 2023, 11:06 by Niverio
Tricky but great fun! I almost had a heart attack at the end because of a small wrongly placed segment, but very rewarding puzzle overall!
on 12. April 2023, 19:23 by Christounet
Beautiful ! This puzzles flows very nicely once you get the point of the general mechanics here. Loved it ! Thanks.
on 12. April 2023, 13:48 by polar
Lovely puzzle thanks!
Small rule clarification: Empty u-bahn cells are not allowed.
on 12. April 2023, 07:38 by RJBlarmo
Pretty tricky for me but a very fun puzzle, thanks!
on 11. April 2023, 07:13 by KNT
super smooth. thanks :)
