1000 Rooms
(Eingestellt am 10. Mai 2022, 22:37 Uhr von Qodec)
This is the puzzle I made for zetamath to celebrate his getting 1000 subscribers to his YouTube channel. It features a couple of his favourite constraints - in disguise.
- Normal sudoku rules apply: Each row, column, and region indicated by thick borders in the grid must contain the digits 1 to 9 once each.
- Numbered rooms: Clues outside the grid indicate the digit which has to be placed in the Nth cell in the corresponding direction, where N is the digit placed in the first cell in that direction.
- German whispers: Adjacent digits along each green line in the grid must have a difference of 5 or more.
- Chinese whispers: Adjacent digits along a lilac line must have a difference of 2 or less.
You can play this puzzle online using:
- CTC app: https://tinyurl.com/42cw7cpv
- f-puzzles: https://f-puzzles.com/?id=y4vb4zdd
Good luck!
Lösungscode: Row 5. I.e. the 9 digits in row 5 from left to right, for example: 123456789
Kommentare
am 13. Mai 2022, 02:40 Uhr von Krokant
1000 rooms do look somewhat smaller than I would have expected. :)
Wandering through them was fun. Great puzzle!
am 12. Mai 2022, 20:15 Uhr von peacherwu2
Brilliant rule set. Enjoyed every minute of working on it.
am 12. Mai 2022, 10:06 Uhr von bigger
ohh, i see. thanks for the explaining.
it's just not normal for us to name a variant with our country. and recently, some of our newbee solvers notice this site. Blogs and wiki is not available for most of us, but this site is. my instinct told me if this variant name get into our public, it could get political and patriotic very quickly. and I really don't want any haters to accuse me of not naming any variant with our country. and I really hope our Sudoku assoiciation won't notice this idea, or else they would put more pressure on our setters.
just maybe try naming it with a different whisper line next time. innocent or not, the public would only take the controversial part and enhance it. we've been try so hard to tell our new guys to stay off fake logic basing on cultural pride. now this, would really complicate the case.
@bigger That is a point I didn't consider at all, I appreciate very much that you told me. I will do my best to discourage it in the future myself.
am 12. Mai 2022, 09:29 Uhr von Qodec
Thanks everyone for such kind feedback!
@cdwg2000 @laky @bigger The origins of this constraint's name are not entirely clear to me. It goes back at least to puzzles #213 and #214 on Tom Collyer's Friday puzzles blog, which he posted in 2013, where I believe he invents the constraint and also explains where he got the name from: he remembers someone just mentioning it to him. (This search term should work: 'friday puzzles 213 tom collyer')
My main hypothesis is that it was named after the children's telephone game 'Chinese whispers' (https://en.wikipedia.org/wiki/Chinese_whispers). I think 'Chinese' in that name is an innocent metaphor for 'unintelligible language', but this seems somewhat controversial. Be that as it may, I still like the name for the sudoku constraint, it sounds poetic and slightly exotic to me, which are all positive things.
am 12. Mai 2022, 08:42 Uhr von kmoter
lovely puzzle, thanks
am 12. Mai 2022, 08:18 Uhr von Niverio
Very elegant!
am 12. Mai 2022, 05:05 Uhr von Agent
Masterful! Chinese whisper seems like an interesting constraint.
am 12. Mai 2022, 04:47 Uhr von cdwg2000
Why is it "Chinese Whispers" in the rules, is the idea from the Chinese author, or what is the other reason? Very curious.
am 12. Mai 2022, 03:47 Uhr von laky
Why is there a rule called Chinese whispering，is it made by Chinese people？
am 12. Mai 2022, 00:47 Uhr von filuta
very funny, thanks.
am 11. Mai 2022, 23:39 Uhr von bigger
just curious, why is it called Chinese whispers
am 11. Mai 2022, 15:23 Uhr von abed hawila
That's a lovely puzzle!
am 11. Mai 2022, 11:18 Uhr von Christounet
Very nice and very well designed ! Broke it 3 times until i figured out my mistake in Box 3... A very nice present for a thousand marker ! Can't wait for the 2000 version :)
am 11. Mai 2022, 06:35 Uhr von Playmaker6174
Fantastic puzzle! Very engaging solve path with plenty of lovely bits :)
