Logic Masters Deutschland e.V.

Biagonal Bichael (Chaos Construction)

(Eingestellt am 29. Mai 2022, 17:32 Uhr von purpl)

I took some inspiration from a certain arrangement of digits in a lovely puzzle you can find here: Wrench-Heads by Agent. I clearly have some kind of addiction to writing in digits at the beginning of puzzles to set up a structure of psuedo-givens that make for an interesting solve path. I hope this makes you giggle at the very least.

Rules:

Normal Chaos Construction rules apply. Place one of each digit 1-9 in every row, column, and region, but the regions must be determined by the solver. That is, divide the grid into 9 orthogonally connected groups of 9 cells.

Clues outside the grid give the sum of the digits on the indicated diagonal, digits may repeat along these diagonals ;)

Circles give the number of distinct regions in a 3x3 box centered at that circle (if they are on an edge they refer to the cells of that 3x3 box in the grid). Squares either give the number of cells in the row or the number of cells in the column of their region that the square is also in, these cells may be disconnected or contiguous segments. Not all circles/squares are given.

Links:

f-puzzles

CtC

Penpa+ (with answer check)

If you enjoyed this puzzle, consider leaving a rating and/or comment. Better yet recommend it to your fellow solvers if you liked it that much! I hope you do so for all the puzzles you enjoy ;)

Also check out the puzzles/setters I linked in the first paragraph if you haven't already.

Lösungscode: For the region containing r2c2, record the digits of this region as they appear left to right, top to bottom. Do the same for the region containing r5c3. 18 digits in total, no spaces.

Zuletzt geändert am 29. Mai 2022, 21:42 Uhr

Gelöst von kolot, Dandelo, KNT, LittleBallOfPurr, Jesper, ryagami, Agent, ancarro, robals, Franjo, Jay Dyer, marcmees, wenchang, jkuo7, peacherwu2, mackant1, Dentones, MagnusJosefsson, polar, h0_0man, tinounou, wildbush7, rmn, ns08, Snookerfan, Christounet, Mody, cdwg2000, Vebby, Saskia, dogfarts, h5663454
Komplette Liste

Kommentare

Zuletzt geändert am 10. Juni 2022, 10:08 Uhr

am 10. Juni 2022, 10:07 Uhr von Christounet
Very nice puzzle ! I always wondered if a chaos construction puzzle would be possible with such a diagonal filled that way (don't want to spoil anything even if it is kind of obvious how this diagonal is filled). Now, thanks to you, I know it is possible. Very well done !!

am 5. Juni 2022, 20:24 Uhr von Snookerfan
Great puzzle! Many easy digits from the start, but then the hard journey begins, super fun!

am 31. Mai 2022, 20:42 Uhr von wenchang
very easy for the first few digits. Then very hard.
https://youtu.be/CA56NYiB5kw

am 31. Mai 2022, 15:02 Uhr von MagnusJosefsson
Great puzzle, very fun and challenging!

am 31. Mai 2022, 02:29 Uhr von peacherwu2
The generous breakins gives illusions this is gonna be easy, but I was so wrong!

am 31. Mai 2022, 00:44 Uhr von wenchang
It is very very hard. It took me 1.5 hours. Time is flying when solving it.

am 30. Mai 2022, 22:40 Uhr von Jay Dyer
Great puzzle! Kept me on my toes until the very end.

am 30. Mai 2022, 15:39 Uhr von robals
Wow, what an afternoon. Easy start, but I got stuck mid solve. Very fun. For me harder than 4 stars :D

am 30. Mai 2022, 05:19 Uhr von Agent
Very nice! The mid-solve was surprisingly resilient after these very generous little killers.

am 29. Mai 2022, 22:51 Uhr von Jesper
A lot of fun!

am 29. Mai 2022, 22:04 Uhr von LittleBallOfPurr
This puzzle felt so rewarding throughout, lots of lovely little deduction and rewards.

Extremely challenging to break in with a first digit, as I'm sure many will notice.

Thanks so much, for such a delightful piece of work!

am 29. Mai 2022, 21:45 Uhr von KNT
this puzzle is as good as the title is terrible, which is to say a very good puzzle

am 29. Mai 2022, 21:42 Uhr von purpl
This is proving to be more difficult than indicated by testing

Zuletzt geändert am 29. Mai 2022, 21:41 Uhr

am 29. Mai 2022, 21:41 Uhr von Dandelo
Very nice, and quite hard. And it is very easy to make mistakes... For me it felt like more than 3/5.

The rules are clear now. "either" is sufficient, but writing "the number of" twice is also enough.
I really started with the wrong rules.

This row-or-column-problem appears frequently and even if the wording is correct, it sometimes causes misunderstandings.

am 29. Mai 2022, 20:35 Uhr von kolot
Pretty simple start and some challenging and interesting deductions afterwards which were fun to figure out.

Zuletzt geändert am 29. Mai 2022, 19:54 Uhr

am 29. Mai 2022, 19:43 Uhr von Dandelo
There would be 5 cells which have the property to be in the same row or column.

But now it's clear, I think. Maybe a picture would be the easiest way?

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purpl/Memeristor: Oh! I now understand what you mean. Sorry about that, I think the word either does clear that up. If there is further confusion I will add a picture.

am 29. Mai 2022, 19:27 Uhr von purpl
Adjusted the rules for clarity on the points below.

Zuletzt geändert am 29. Mai 2022, 19:52 Uhr

am 29. Mai 2022, 19:13 Uhr von Dandelo
If there are 2 cells in the same row and 3 cells in the same column, would a square contain 5? Or could it contain either 2 or 3?

I think the rules could be read in both ways.

Zuletzt geändert am 29. Mai 2022, 19:02 Uhr

am 29. Mai 2022, 18:43 Uhr von SKORP17
es gibt 3 Circle am Rand , die nicht das Centrum einer 3*3 Box sein können, was enthalten die denn?

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purpl/Memeristor: Well they can be the center of a 3x3 box, its just that 3 of the cells happen to be outside the grid, so clearly only the 2x3 (3x2) cells within the grid would be relevant to the solve.

am 29. Mai 2022, 17:32 Uhr von purpl
Typo in the title *facepalm*

Schwierigkeit:5
Bewertung:98 %
Gelöst:32 mal
Beobachtet:3 mal
ID:000A2B

Variantenkombination Online-Solving-Tool

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Lösungscode:

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