Lösungscode: 1. und 7. Zeile
am 9. November 2021, 18:08 Uhr von dissonance
Very nice puzzle, thanks for sharing.
am 21. Mai 2021, 16:13 Uhr von Vebby
Great puzzle! I found it easier to solve upon replacing the yellow colour with one-cell cages to indicate line-of-sight restriction, so that I could shade all cave cells one colour. Link to solve on Penpa Plus with this change: https://git.io/JsM36
am 30. Januar 2021, 17:41 Uhr von wydadman
رائع يا فيستوميفيل!
am 5. August 2020, 16:32 Uhr von glum_hippo
Die Regeln bedürfen m.E. keiner weiteren Erläuterung... sie sind nur deswegen leicht zu missverstehen, weil da so viel los ist! Aber wer Höhlenrätsel gemacht hat, wird irgendwann den Leitfaden finden (inkl. ffricke, der sich ja sehr gut auskennt)
am 5. August 2020, 16:02 Uhr von Phistomefel
@Nylimb: Thank you for the nice feedback and the perseverance!
@ffricke: Dankeschön! Die Regeln für das Rätsel sind auch ein wenig überbordend, da kann das leicht passieren. Im Nachhinein bin ich auch nicht mehr so glücklich mit der Unterscheidung zwischen Wandzellen, Höhlenzellen mit Hinweisen und Höhlenzellen ohne Hinweise.
am 5. August 2020, 09:56 Uhr von ffricke
Wundeschönes Rätsel, ich bin zunächst nur daran gescheitert, weil ich die Regeln nicht richtig gelesen habe.
am 25. Juli 2020, 17:49 Uhr von Nylimb
I had to start over about 3 times, because I'd made errors that led to contradictions. It was very satisfying to finally finish it without an error. Thanks for a great puzzle!
am 13. Juli 2020, 15:24 Uhr von henrypijames
@MartinR: You can simply use different colors. I used blue for clues (overrode yellow becaus blue is more visible) and green for non-clue cave, as well as red for walls.
am 12. Juli 2020, 18:33 Uhr von Circleconstant314
I'm so glad that the English description was simply missing the rule about walls needing to contain distinct digits. I was worried that this would be the first puzzle of yours that required heavy bifurcation but that rule clarification really smoothed out the solve. What a brilliant idea for a Sudoku, thanks for sharing this one! :-)
am 12. Juli 2020, 17:01 Uhr von MartinR
Thanks to @Narayana for that video link, that was really helpful as had not come across cave logic before.
One minor comment - when solving I found it hard to keep track of the inner clues as if I marked all the inner cells in one colour the highlights disappeared and having two colours for the same area (inner) didn't make the border between outer/inner as distinctive for me
This might be just me, but for my use I created an alternative penpa link where the inner clues were circled and unaffected by shading which I found clearer - for me at least:) - as could use one inner colour and not lose the clue locations. If interested, link is https://tinyurl.com/y44sahzv
am 12. Juli 2020, 09:05 Uhr von Phistomefel
Thank you all for the wonderful feedback and apologies for leaving you with an unsolvable puzzle by forgetting to add the no-repetition rule in the english description. I guess in the future I should leave a puzzle unpublished for a day or so and then proofread it once more before I activate it.
am 12. Juli 2020, 07:51 Uhr von Mody
am 11. Juli 2020, 18:36 Uhr von Madmahogany
Another great one!
am 11. Juli 2020, 18:35 Uhr von glum_hippo
Nervenaufreibend, aber das ist keine Kritik! Wunderbare Idee
am 11. Juli 2020, 14:59 Uhr von henrypijames
Wonder how long it takes for this one to get onto CTC. My bet: within a week.
am 11. Juli 2020, 14:43 Uhr von anu_chakravarti
Totally missed the walls having unique numbers rule and kept staring at the puzzle for way too long. Nevertheless absolutely delightful puzzle!
am 11. Juli 2020, 12:43 Uhr von Jesper
I did wonder yesterday at why the small example did not seem to have a unique solution. But unfortunately, I shrugged it off, and tried to solve the puzzle, oblivious to the missing restriction. It was a lot more fun today, having found out about that restriction. Great puzzle!
am 11. Juli 2020, 11:57 Uhr von henrypijames
Oh wow, that is a huge additional restriction, as it dramatically limit the length of any wall right away.
Guess I should make it a habit to always read both the English and the German descriptions every time. There have been discrepancies in a number of puzzles here (most deadly, the solution code on one occasion).
am 11. Juli 2020, 11:18 Uhr von marcmees
got stuck in a dark cave until the additional rule gave some extra light. nice concept. thanks
am 11. Juli 2020, 07:10 Uhr von Phistomefel
@cdwg2000: Thanks a lot for your questions! I simply forgot to add the no-digit-repetition rule in the english description. I am very sorry for that!
am 11. Juli 2020, 06:49 Uhr von r45
am 11. Juli 2020, 03:14 Uhr von cdwg2000
The rule description should be added: in the gray area connected orthogonally, the numbers cannot be repeated.
am 10. Juli 2020, 21:27 Uhr von Narayana
What you describe is what Simon (CTC) calls "Checkerboard Logic." This pure cave video https://www.youtube.com/watch?v=Jjs_xA1sDCg was very helpful to understand how Cave works.
am 10. Juli 2020, 18:54 Uhr von Big Tiger
Can two open spaces or walls touch each other diagonally? For example, could you have Wall in R3-C3 and R4-C4, with open spaces in R3-C4 and R4-C3?
EDIT: Hmm, I THINK I just answered my own question in further experimenting, but your answer will help clarify...
@Big Tiger: This diagonal constellation is indeed impossible. And I found it easier to spot this knowing that there has to exist a path around a cave (then two pieces of the path would touch each other diagonally which is impossible).
*** Welll, that's what I thought, which is why I'm stumped. I'm creating a short video to explain my perplexity better than I could in text. I'd love to know where either I'm misunderstanding something or my logic is failing me. As soon as it's posted I'll link you to it.
am 10. Juli 2020, 18:17 Uhr von GuessIt
Do not click "solve" on f-puzzles once you're finished. You will regret it. I certainly do. (It messes with all the digits somehow and removes everything else, including coloring)
am 10. Juli 2020, 16:00 Uhr von Phistomefel
@henrypijames: Yes, that is right, an uncolored given digit can be anything. The walls can also contain 2x2 blocks. Now, I see that I could have chosen a better example. Thanks!
am 10. Juli 2020, 14:51 Uhr von henrypijames
An uncolored given digit can be either wall, non-clue cave, or (possible) clue cave?
And the wall doesn't have to be one cell wide, meaning it can contain 2×2 blocks?