Logic Masters Deutschland e.V.

Landvermessung U-Bahn

(Published on 27. June 2024, 01:47 by KNT)

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.

A clue inside the grid indicates the length of the smallest loop (that does not touch or cross itself) on the network that touches all non-empty cells surrounding the clue. If the clue is an infinity sign, then no such loop exists.

A 6x6 example is provided:

SudokuPad

penpa+

Solution code: For each row from top to bottom except the last, the number of lines leading down from that row.

Last changed on on 30. June 2024, 05:12

Solved by Agent, Myxo, Niverio, ONeill, Bellsita, jkuo7, Jesper, jessica6, wooferzfg, Jakhob, Paletron, lupo, Christounet
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Comments

on 6. July 2024, 23:59 by wooferzfg
Avoiding mistakes with this ruleset is really tough, and it was often difficult to see how it could have a solution. Lots of cool and unexpected moments

on 1. July 2024, 17:13 by KNT
@jessica6, other solvers have submitted codes after I have fixed it, could you leave your code in a hidden comment?

on 1. July 2024, 16:15 by jessica6
@KNT Damn!! Now I finally have the solution, WITH that ambiguity, and both solution codes are no longer valid because the puzzle has changed.

on 30. June 2024, 13:51 by Jesper
Awesome puzzle, thanks!

on 29. June 2024, 21:09 by ONeill
Cool puzzle, the infinity clues are indeed used well :)

on 27. June 2024, 12:18 by Niverio
Despite Landvermessung being a super niche genre, after the opening this felt like one of the most intuitive solves that involved an U-Bahn. Lovely!

on 27. June 2024, 11:54 by Myxo
Super cool!

on 27. June 2024, 02:20 by Agent
Very nice, some neat logic especially with the infinity clues!

Difficulty:5
Rating:100 %
Solved:13 times
Observed:3 times
ID:000IO5

Enter solution

Solution code:

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