GW-Bahn (German Whisper U-bahn)
(Published on 27. September 2025, 00:00 by cyddrdrd)
Thank you Christounet, CutieRainbow and Agent for testing and suggestions!
Rules
- Sudoku: Fill the right grid with digits 1-9, so that no digit repeats in the same row, column, or 3×3 box.
- U-Bahn: Draw a totally connected network through the centers of some cells in the right grid. The network may branch or turn, but may not have any dead ends. Given lines must NOT be a part of the network, i.e., there is no U-Bahn line between r7c5-r7c6, nor between r9c2-r9c3.
Clues in the left grid indicate how many times the corresponding line shape (cross, branch, straight line, or turn) appears in that row in the right grid, regardless of rotation. - German Whisper (GW): Adjacent digits on a GW line must have a difference of at least 5. ALL lines are GW lines (including given lines and the U-Bahn network).
Penpa+
SudokuPad
Solution code: For each row except the last, from top to bottom, the number of lines leading down from that row; followed by row 9. (17 digits in total)
Comments
on 29. September 2025, 09:44 by cyddrdrd
Rules clarification
on 29. September 2025, 04:38 by Bellsita
Nice puzzle!
I got a little confused with this part of the rules: "Given lines must NOT be a part of the network". I thought the network couldn't go on the cells with lines but it can.
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rdrd: Thank you! I’ll clarify the rules.
on 28. September 2025, 03:14 by MaizeGator
In your previous puzzle there was a modulo thing that corresponded to digits. Does that rule still apply here?
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rdrd: No it doesn’t. Only German Whispers here.
on 27. September 2025, 00:56 by Agent
Great fun, some clever moments throughout!
on 27. September 2025, 00:31 by Christounet
Great fun! Very satisfying resolution too. Thanks :)
