Subway Roundabout
(Published on 21. August 2024, 22:25 by Niverio)
Rules:
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.
Roundabouts: Assign the numerical value of 0 to empty cells, 1 for turns, 2 for straights, 3 for branches and 4 for crosses. A number in a white circle indicates the sum of the values of the shapes in the surrounding 4 cells.
Links: You can solve this puzzle in either Penpa+ or in the CTC Software.
Solution code: For each row except the last, the number of lines leading down from that row.
Comments
on 16. February 2025, 20:21 by Myxo
Lovely!
on 3. October 2024, 02:23 by Agent
Great puzzle, some cool patterns with the sums!
on 25. September 2024, 14:57 by Jacob1531
Phenomenal puzzle! Enjoyed every bit of it.
on 19. September 2024, 20:40 by Samish
I didn't expect the end to toughen like that but maybe I was tired by then. Nevertheless, great ruleset and implementation, thanks!
on 27. August 2024, 16:18 by marcmees
Opens smooth but gets really challenging during the second half of the solve. thanks
on 26. August 2024, 00:33 by Jesper
Very nice variant, thanks!
on 25. August 2024, 05:52 by wooferzfg
Very nice, thanks
on 23. August 2024, 23:15 by Christounet
Enjoyed this ! Reminded me of the summation u-bahn serie by Agent. Thanks :)
on 23. August 2024, 03:29 by KNT
great!
on 22. August 2024, 18:34 by Piatato
Lovely!
on 22. August 2024, 14:39 by ONeill
Cool idea, thanks for the puzzle
