Nagoya Metro (U-Bahn + Snake)
(Eingestellt am 7. Oktober 2025, 14:00 Uhr von ns08)
This puzzle is a combination of U-Bahn and Snake. You may feel that it requires a lot of trial and error. However, once you understand the core logic, you won't need to do as much. If you need help, check out the hints or feel free to leave a comment. I hope you enjoy it!
Rules
- U-Bahn:
Draw a single connected loop network through the centers of some cells, which may branch or turn, but may not have any dead ends. Clues to the left and above the grid indicate how many times the each line shape (cross, branch, straight line, or turn) appears in that row or column, regardless of the line shape's rotation. - Snake:
Shade some cells to form a one cell wide snake. The snake may touch itself diagonally but not orthogonally. A grey circle must be shaded. Clues to the right and below the grid indicate how many times shaded cells appear in that row or column. - Interaction:
Every consecutive group of four shaded cells along the snake must contain each of the four line shapes exactly once.
Main puzzle
Play main puzzle on Penpa+.
Hints
Consider the following points to determine the shape of the snake:
- The parity of the line shape along the snake.
- Where the head/tail of the snake are and what the line shapes around them.
- The shape of the snake segment touching the edge of the grid.
- The direction of the snake: The order in which the line shapes appear along the snake is always the same. This can help determine the direction of the snake segments and how they connect.
Lösungscode: For each row except the last one, the number of lines leading down from than row.
Kommentare
am 7. Oktober 2025, 19:40 Uhr von LolaK
In the snake instructions, it says that clues are to the left and below the grid - do you mean right instead of left? I'm pretty sure it's just a typo (because otherwise row 8 doesn't make sense), but I'm just double checking - the only snake-related number clues are the 5, 8, and >4, is that correct?
One other thing, is the grey circle meant to represent one of the ends of the snake or could it be anywhere along it? I'm assuming it could be anywhere but then again I just want to be completely sure :)
Anyway, this looks really interesting and I look forward to solving!
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Sorry, that was a typo. Thank you for pointing that out. I will correct the rules and Penpa+ link immediately.
You're right, the snake clues are definitely below and to the right of the grid. The grey circle is not necessarily the endpoint, this is determined by the solver.
