Stostone Cold (Chaos Construction)
(Eingestellt am 10. April 2024, 20:09 Uhr von Phistomefel)
An dieser Stelle auch vielen Dank an bolgat, dessen cooles Rätsel Stostone Fillomino mich überhaupt erst auf die Rätselsorte aufmerksam gemacht hat.
Hier die Regeln zu diesem Rätsel:
- Fülle die Felder mit den Zahlen 1 bis 8, sodass jede Zahl genau einmal in jeder Zeile, jeder Spalte und jedem Gebiet vorkommt.
- Ein Gebiet ist eine Menge von acht orthogonal zusammenhängeden Feldern. Die Form der Gebiete herauszufinden ist Teil des Rätsels.
- Jedes Gebiet enthält genau einen Hinweis, d.h. eine kleine Zahl in der oberen linken Ecke eines Felder in diesem Gebiet (nicht notwendigerweise das obere linke Feld).
- Schwärze einige Felder, sodass
- keine orthogonal benachbarten geschwärzten Felder durch eine Gebietsgrenze getrennt sind,
- alle geschwärzten Felder innerhalb eines Gebiets orthogonal zusammenhängen und
- sich die Ziffern in den geschwärzten Felder innerhalb eines Gebiets zu dem Hinweis in diesem Gebiet aufaddieren.
- Wenn alle zusammenhängenden Gruppen geschwärzter Felder wie bei Tetris gerade herabfallen ohne ihre Form zu ändern, müssen sie lückenlos die untere Hälfte des Gitters füllen ohne dass Teile von ihnen in die obere Hälfte ragen.
Wenn ihr das Beispiel ausprobieren wollt, findet ihr hier einen Link dazu.
Das eigentliche Rätsel ist auch online in Penpa Plus und in der CTC-App (Vielen Dank an firespire!) verfügbar. Viel Spaß beim Lösen!
Ein kleiner Hinweis zu diesem Rätsel in Penpa: Nachdem einige Felder geschwärzt werden und das Gitter parallel in Gebiete zerlegt werden soll, kann ich das Werkzeug Composite->"Area/Field"->"Edge/Aux-Line" empfehlen, um über Hilfslinien zu notieren, welche Felder zum gleichen Gebiet gehören.
Lösungscode: Die ersten beiden Zeilen
Kommentare
am 31. Mai 2024, 21:29 Uhr von PlumpestPlumber
I enjoyed this very much. Thank you for this wonderful puzzle.
am 4. Mai 2024, 09:24 Uhr von Styku
First time I did your puzzle before Simon did :) I am very proud of myself. It was very hard for me because I did not understand the tertis rule. You are my favourite constructor. Thank you for your effort in creating these masterpieces!
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Thanks a lot for the solve and your very nice comment, Styku! Also, well down solving this puzzle despite the unfamiliar ruleset! (:
am 18. April 2024, 23:22 Uhr von KNT
cool
am 16. April 2024, 19:20 Uhr von Prutsbeest
Wow, this took me a long, long time to figure out the logic! Very nice indeed!
am 16. April 2024, 17:23 Uhr von henrypijames
Then you should set a 9×9 with the fallen shapes filling the "lower two-third".
am 16. April 2024, 12:35 Uhr von sunnyjum
Fantastic puzzle, I loved how well the "tetris" aspect played into it
am 14. April 2024, 21:27 Uhr von Christounet
Great puzzle ! Super interesting region logic here. There is one question I kept asking myself while solving : why did you set this on an 8x8 grid rather than a 9x9 ? Was there something that did not work on a larger grid ? Or did you find the logic was tighter with a smaller one ? Or was it just random ?
Anyway, thanks for setting and sharing :)
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Thanks for the nice feedback! The reason it is on 8x8 is merely because the original Stostone rules say that the lower half should be entirely filled with the shaded shapes and saying "lower half" feels nicer than "the bottom five rows". :)
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Haaa, I had not thought about that ! Makes sense. Thanks.
am 14. April 2024, 21:25 Uhr von mihel111
Wonderful puzzle. One of the greatest in chaos construction.
am 14. April 2024, 19:31 Uhr von MaizeGator
Awesome puzzle and execution of the ruleset.
For anyone struggling, I highly recommend solving the bolgat Stostone Fillomino first. There is a comment on that puzzle which seems to be the inspiration behind this puzzle...
am 14. April 2024, 16:12 Uhr von wand
loved the region-building in this one - makes me want to do more stostone hybrids
am 14. April 2024, 15:32 Uhr von MaizeGator
Awesome puzzle and execution of the ruleset.
For anyone struggling, I highly recommend solving the bolgat Stostone Fillomino first. There is a comment on that puzzle which seems to be the inspiration behind this puzzle...
am 14. April 2024, 03:57 Uhr von ONeill
Awesome! Hope we are lucky enough to see Simon tackle this one :)
am 13. April 2024, 22:46 Uhr von Shape
And once again, such a distinctive Phistomefel puzzle - thank you, that was a joy to solve
am 13. April 2024, 12:07 Uhr von cmb
fantastic puzzle!
smooth logical path.
irregular suduku not too hard.
a real joy!
am 13. April 2024, 02:12 Uhr von Arashdeep Singh
Fantastic puzzle, really enjoyed solving it, thanks!
am 12. April 2024, 21:54 Uhr von Phistomefel
Thanks a lot for the kind words, everyone! (:
am 12. April 2024, 17:35 Uhr von Jesper
A lovely puzzle, really enjoyed it, thanks!
am 12. April 2024, 15:23 Uhr von Phistomefel
Added CTC link. Thank you, firespire!
am 12. April 2024, 15:18 Uhr von Phistomefel
Rule clarification. Thanks, henrypijames!
am 12. April 2024, 14:30 Uhr von firespire
https://sudokupad.app/a21fmb469t
(Thanks to MarkTekfan SudokuPad Penpa+ Importer website.)
I’m a very poor error-prone solver so I appreciate this is a very binary puzzle, you are either right or wrong. It’s the fact you can quickly see if you have got onto a wrong path plus you are gracious to input the solution which Sven’s Sudokupad then allows me to constantly check any number I enter against.
I felt as if you were already anticipating my mistakes and were ready to stop me in my tracks, I’m amazed how clever you are to create such a puzzle. I also appreciate how the region size is a given and there are no question-mark clues. I could see you attempted to made the irregular Sudoku at the end very approachable even though I missed one easy deduction. I’m so happy I was able to work my way through your puzzle and experience your genius.
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Thank you very much for this wonderful feedback! I indeed tried to make the irregular Sudoku part at the end easier this time, since it can be very frustrating to be almost finished, but fail to spot some devious steps like I did in previous puzzles of mine. Also, many thanks for the CTC link and the tip with MarkTekfan SudokuPad Penpa+ Importer website!
am 12. April 2024, 14:09 Uhr von MagnusJosefsson
Fantastic puzzle, really new twist to chaos construction and it works really well! Thank you Phistomefel!
Thank you also henry for the shoutout.
am 12. April 2024, 07:18 Uhr von henrypijames
I don't understand what rule 5 means - the terms "group", "fall", "straight", "change", "half", "gap" are all undefined. Neither the example nor the linked fillomino puzzle brings any clarity either.
Edit: Oh, wait! Is this a Tetris reference? If so, it would be super helpful to mention that. Because sudoku grids are usually static (and flat, unless aquarium rule is invoked) - nothing falls or changes.
But speaking of which, one recent sudoku that does feature a standard grid with a non-static, multi-dimensional ruleset is Sea Level Rise (#HEV) by Magnus - an ingenious puzzle that deserves much more attention than it's gotten so far.
Another question remains: Do the shaded cells have to cover exactly the bottom half and no more after falling down, or can they also stick out into the top half in addition?
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Thanks for the questions and remarks, Henry! The Tetris analogy is very good - the shaded shapes fall to the bottom of the grid like Tetris shapes.
And the shapes are not allowed to stick out into the top half after falling down. I will add that to the rules. Thank you! :)
am 11. April 2024, 20:59 Uhr von yttrio
Awesome hybrid! I had to be very careful when making deductions, as it was really easy to make a false assumption, but it was still really fun to solve!
am 11. April 2024, 00:49 Uhr von RJBlarmo
Nice puzzle, I always enjoy these hybrids!
am 11. April 2024, 00:21 Uhr von josebastian8
Half an hour wasted because I was thinking about 9-cells regions xD. Finally done after some trial and error (and 2 hours), very nice logic!
