Chaos Construction: Roller Coaster
(Published on 9. February 2023, 01:18 by KNT)
Draw a non-intersecting loop that travels orthogonally between the centers of some cells in the grid. Clues to the left of rows indicate the sum of numbers on horizontal segments of the loop in that row, in the correct order. Clues above columns indicate the sum of numbers on vertical segments of the loop in that column, in the correct order. A question mark may replace any number from 0-9, but no clue may have a leading zero.
On a single round trip of the loop, every region must be entered and exited exactly once.
A 6x6 example is provided:
Solution code: Row 4, then Column 8
Comments
on 15. March 2024, 16:43 by Lucx
Am Anfang ganz schön knifflig… super Idee und eine tolle Konstruktion - Vielen Dank!
on 31. August 2023, 05:19 by sugardude
This is unbelievable. So many different beautiful logics placed evenly throughout the puzzle... How?!
on 8. May 2023, 14:33 by Christounet
Amazing ! The fact that so much progress can be made without considering the clues themselves, but by thinking carefully about the overall progress of the puzzle at some key steps, shows how masterfully the whole process has been designed. Thanks a lot !
on 30. March 2023, 10:36 by CahounCZ
Awesome puzzle, thanks.
on 3. March 2023, 00:28 by Xendari
amazing! this opened my eyes to RC, such a lovely hybrid.
on 2. March 2023, 18:50 by madhupt
Fantastic puzzle, as always, by KNT. Very difficult. Even after the initial break in, it was very difficult. I had to backtrack many a times as new pieces of logic revealed themselves. Thanks a lot for sharing!
on 20. February 2023, 08:58 by ibag
Phantastic!!!
on 16. February 2023, 21:42 by Uhu
Wow, this was awesome! Thanks.
on 13. February 2023, 04:10 by BloodbuzzCorio
KNT this is an exceptional puzzle! It's brutally difficult and I found the level of difficult consistently high throughout - but certainly not in an unfair way. Just some beautiful interaction between the two rule sets - and an extremely rewarding puzzle to get through eventually. Thanks!
on 12. February 2023, 23:14 by tallcat
Very happy to solve this as it's way out of my comfort zone as a solver (and i've done precisely zero loop puzzles before). Fantastic construction and I enjoyed it immensely.
on 12. February 2023, 06:47 by RJBlarmo
Very nice puzzle, maintained its high difficulty from start to finish. Enjoyed the constant mix of loop building and region building logic required to progress in the puzzle.
on 11. February 2023, 04:46 by Agent
Absolutely joyful!
on 11. February 2023, 02:35 by stayal
This was my first rollercoaster puzzle and you combined it incredibly well with the chaos construction. I loved learning about the ruleset as I solved it. Thank you again!
on 10. February 2023, 21:10 by lerroyy
Really good puzzle!
on 10. February 2023, 00:35 by Piatato
Relentless puzzle, but ultimately very rewarding. :-)
on 9. February 2023, 22:47 by ONeill
Roller coaster and chaos constructions are two of my favourite genres and you combined them excellently. Thank you!
on 9. February 2023, 22:39 by bansalsaab
What a ride this coaster was. Thanks KNT. I kept making the same mistake of assuming different values for the dots in second column. On my final try before giving up, I realized my mistake and after that it was smooth.
on 9. February 2023, 18:36 by KNT
@Jesper I felt similarly when I decided to set it. I feel like a handful of awesome puzzles could be made with this ruleset :)
on 9. February 2023, 18:30 by Jesper
Brilliant! Such an intuitive way to combine Roller Coaster and Chaos Construction, I am almost wondering why nobody thought of it earlier.
on 9. February 2023, 17:29 by madhupt
Fantastic puzzle, as always, by KNT. Very difficult. Even after the initial break in, it was very difficult. I had to backtrack many a times as new pieces of logic revealed themselves. Thanks a lot for sharing!
on 9. February 2023, 14:19 by Vebby
I found the opening very tough, but after the initial breakthroughs the puzzle flowed very well and was a lot of fun.
on 9. February 2023, 10:56 by Niverio
Loops make my brain go poof!
Very cool puzzle, albeit difficult. Although that's not saying much as I tend to find almost all loop puzzles difficult.
on 9. February 2023, 09:24 by polar
Immensely enjoyable puzzle! Thanks :)
on 9. February 2023, 04:34 by the_cogito
Very cool puzzle, loved the region building logic especially :)
on 9. February 2023, 03:31 by Myxo
Awesome puzzle as usual!
on 9. February 2023, 01:20 by KNT
This is a difficult puzzle, and definitely assumes some proficiency in Roller Coaster logic. I recommend solving with the Penpa+ link, as a variety of careful notation will be of great use during the solve. Good luck, and enjoy the puzzle!
