gdc here. Thanks so much for this feature. This puzzle took quite a long time to construct in order to present this crazy ruleset in a (hopefully) crisp way. Thanks for everyone involved in testing and especially to the S-cell expert ViKingPrime for the support during development.
This is ViKingPrime and I stand by every word of that - a most-deserved feature, this one. If you're about to watch the solve, don't shy away from the apparent complexity, this is absolutely an approachable puzzle and one you will relish exploring for yourself first.
I agree with your assessment of the puzzle being one of the best of each category, and also a lot more approachable than it seems. I never really got hung up anywhere and somehow solved in 47m. I was hesitant to even start it looking at the video length. But the logic flows very smoothly! Edit: after watching Simon's solve, I must say I made a big mistake in my solve. When I revealed the two 2-cell tops to the zipper in box 9, I did not consider the fact that there could be two zippers overlapping. I saw that the center had to be somewhere below r7c9, and therefore falsely assumed it had to be one 7-cell zipper and then proceeded from there. Simon, of course, immediately realized there could have been overlapping zippers and then proceeded until he had enough info to rule that out. Edit 2: I feel a little better about my mistake seeing that Simon also made a mistake which he only found because his broke the puzzle. And I am definitely glad that my mistake did not break the puzzle because I would not have wanted to go back and figure it out!
@@MatthewMcDonald0 Oh, I watch the solve regardless, unless the one and only problem is the break-in and the vid is very short. It's like seeing a reaction video if I solved it, and if I didn't solve it... it is like a more awesome reaction video.
"...even in this ludicrous puzzle, we can't include minus digits on the other side of the zipper. Do not even think about it. Constructors out there, do not think about it. That is a horrible thought, that doesn't bear any further research or interest, believe me." From the deepest wells of the 9th circuit of puzzlers' inferno there is immediately heard a bone-shattering scream in unison from tormented setters' souls: "Challenge accepted". This puzzle was so clearly above my paygrade that I did not attempt to solve it, but man, it was really a fun solve to watch.
I love that the sudoku community has just taken one of Simon's catchphrases and turned it into a standard ruleset. Edit: Looking forward to someone making a puzzle with negative digits now
Some obscure XV grid where all XV are given but no actual Xs or Vs in the grid? And it's empty except for a 3-cell bent killer cage adding to zero? No, I don't think anyone would want to set, solve or watch that ;)
This might just be my favorite sudoku of the year, I had a grin on my face the entire time. I can’t help but wonder where this can be taken next for zipper lines! Wonderfully done GDC!
1:06:58 "Somehow it knows" Simon, I'm sure people have said this before but Sven's wonderful software allows the setter to embed the solution into the puzzle - this always seems to surprise you! A moment's thought tells you that this is absolutely necessary for Fog puzzles otherwise the software would not be able to clear the fog when a correct digit is entered.
This one was one of the best video on the channel. Sudoku: awesome fog puzzle with amazing zipper line Solve: super good as always, and you find your mistake pretty quickly Lord of the Rings: present. Super present. And I love it!!! Shire, Rivendell, Mordor and the Eye of Sauron!!!! Our little hobbits would be happy to be on this channel!! Thanks for the solve!!! 🤗
I find it so amusing that Simon said that negative digits on zippers didn't bear thinking about and then loved a puzzle with negative digits on zippers.
23:00 negative numbers in Sudoku 🤔... The horror 🤣 I'd love to see it, but given how stuck I get even on GAS puzzles I'll be watching this space for thst 😂
One thought I have for that: make five count as zero, have the even digits count as positive and the digits 1 3 7 9 as negative and one could construct zero sum killer cages and such
I have the oddest memory that I have at least seen the concept of negative values (a digit counting as negative for cage totals etc.) on some sudoku channel on UA-cam! Negative numbers wouldn't be far from that... 😁
@@bluji1250 I may be imagining it, but I think there was a yin-yang a while ago where values in one were positive and in the other were negative, but I can't remember what the values were being used for. Possibly cage totals.
There have been quite a few puzzles with negative modifiers. I even have made one with zipper lines, but it’s really not noteworthy enough for this channel
This puzzle led me to consider an interesting possibility, and that possibility led me to ponder an interesting question: if there was a Sudoku with Schrödinger cells, and the solution of that puzzle had a Schrödinger cell in one of the corners, and that Schrödinger cell had a 3 as one of its digits, would that Schrödinger cell get a song? Also, it's fairly easy to see how the solution checker can know that the solution is correct even though some cells (9 of them, to be precise) only have central-pencilmarks in them. It's the same way the software knows to clear fog cells when a correct digit is entered: the solution of the puzzle, including its Shrödinger cells, has been included with the puzzle for the software to check against.
@@stephenbeck7222Yes. Easily confirmed by deleting the contents of the Schrödinger cells at the end. It still confirms you have the correct solution. If you have all the non-Schrödinger cells correct, it is a trivial exercise to fill in the Schrödinger cells with the missing digits, so it just assumes you will have those correct if everything else is correct.
22:49 Love how Simon cannot help himself dreaming up even more complex variations, then tries to put the genie back in the bottle by pleading with constructors not to create them !
I feel like the great "gdc" was chosen to function as a conduit for the eternal source of wisdom, when he channeled this puzzle down from the Crystal Blue Persuasion which transcends all that comes to exist.
My second puzzle before watching the video! 01:16:59 I did have to watch the explanation on the Schrodinger cells but once that made sense the puzzle worked out wonderfully
I love Schrödinger sudoku, and this particular combination is awesome. Those zipper lines turning back on themselves are fun. It's my favourite puzzle in a long time; which says something considering the brilliance of some of the recent puzzles.
I love how at 1:01:25 in Simon highlights the third column, saying "I haven't filled in 1589" when on the seventh row of the column the next numbers in the row are: 518 ... leaving a skyclad single 9. "I can sense this digit is under pressure," is simply golden. Sometimes I wonder if Simon is distracted too much by genius level math to spot what's right in front. Sometimes I hope he's just playing a game (well, duh, Sudoku one might hope) with us and leaving us room to feel smart. Never change! :)
This puzzle was truly amazing. It can look intimidating at first but it wasn't too hard to solve (this is actually the first and only puzzle with schrodinger cells that I've been able to solve on my own). What a late year treat!
The name of this one is hillairous, it's such a great wordplay on Zipper Line and Zipperlein (German for "ache", but it's a dimunitive and usually used in a humorous way to refer to all the small body pains old age brings - or, more sarcastic, to poke fun at people who are constantly complaining about small aches to get attention).
Wowzers, probably the most challenging I've ever found a FoW puzzle. Took a full 40:11, and very nearly called it quits. What a satisfying achievement though! Brilliant puzzle.
Even though I solved it without any help I can not comprehend the fact that it is solvable from only those two cells in the beginning. Have to admit I was very surprised when the 4 appeared.
I wonder if there is scope to have 0 digits in a sudoku without the Schrodinger's cells (ie 0-8) - seems they can make some unique logic with rules like zipper lines.
Schrodinger Sudoku is my absolute favorite variant! So much hilarious logic. Forces the solver to stop and think - especially slower people like me. When I reached that 13 pair in r4c4, I kept thinking "how do I resolve this?" lol
Such a beautiful puzzle. Really enjoyable to solve and watch being solved. I only had one stumble as well, but mine was in box nine with that wily zipper in the shadows.
Finished in 98:51. I don't think I could have done it without the fog feedback telling me I had bad logic though. Several points I had what I thought would be a good digit and it wasn't, so I had to backtrack to see what was wrong, and it was always a Schrodinger cell I hadn't fully considered.
Enjoyable puzzle, thanks. For some reason I decided to make life more difficult for myself by thinking the puzzle had doublers rather than S cells, and kept having to shake off that delusion.
The whole time Simon is working on the lines in b9 I'm sitting here thinking "you have all the natural numbers penciled so you know what those 3 boxes contain even knowing one is Scheoedinger"
i was a little scared when I see the length of the vid, but I give it a try, and it is not terrible difficult. I made a couple of mistakes here and there, but fog is really helpful to point out any mistake you are making.
one way of doing the "negative (number) constraint" is to say in the rules that there are cells which deduct the number instead of adding it within other rules (like here where you have to add up numbers on the line)
I think there was an easier way to see that those lines towards the end had to join up rather than run beside each other as you feared; there is no need to look at actual numbers. If that had happened, the centre of each line would have been a non-central cell on the other. A non-central cell has to be less than or equal to the central cell of its line, and only equal if the corresponding cell on the other side is zero. As each of the two centres has to be less than or equal to the other they must actually be equal. Hence there would be a zero on each line, but in different places in the box, thus breaking sudoku. Alternatively you could argue that the two centres have to have equal values so one of them must be schrodinger, and in this particular case both of the positions where the centres would have to be had already been shown to be non-schrodinger by the placement of schrodinger cells in other boxes. Edit: No, the first method I suggested fails. One of the zeros is just over the boundary of the box. But I think the alternative method still works, at least if you do things in the order that I did.
CORRECTION For some reason I'm not managing to edit this comment -- the edit just disappears into the void. I just wanted to say that my first suggested method fails, as one of the zeros is just outside the box. But I think the alternative method still works, at least if you work in the order that I did.
Not sure if Simon will get to it, but where does 9 go in box 2 is where I went. But that didn't mean a 0 had to go on the other side of what appears after that. So I'm too dumb for this puzzle. Hopefully I won't feel as intelligency challenged after watching this video.
Zipperlein is a German expression (maybe borrowed, not sure about that) meaning aches/minor pains Like in "Ihn plagt das Zipperlein" = "He is plagued by something" (roughly). Nice play on words here.
btw, "Zipperlein" in German is vernacular for age-related ailments (originally gout, but all kinds of ailments can be called "Zipperlein"). It is rather uncommon these days, it's an old saying (my grandma and mom used it, it's been oder 20 years that I heard someone use it)
Zipperlein is a very old-fashioned German word. It describes minor ailments of elderly people in a tongue-in-cheek way, or can be used as an (even more old-fashioned) term for gout. I’m not aware if Schrödingee himself suffered from gout or lived to be old…?
I had to listen to the intro twice to get it. I went to see Steve Hackett in the Usher Hall. Fish was in the audience and was signing autographs during the interval.
Every time I open the puzzle in the Android version of Sven's Sudokupad, it reveals different extra cells. First it was R2C2 (plus R3C4 and R3C5), the next time it was R1C1 (plus R3C4 and R3C5). Schrödinger indeed!
Wow, the Schrodinger/sum rule made the deduction quite a different. More like sufficient condition vs necessary condition to me. For a normal sudoku, if the number 2 appear in a cell, you can just write it. For this s-sudoku, you can only leave it as a candidate.(it might sum to others) But the reverse situation kept: if the cell only contain number 2 as candidate, you can just write it as other numbers cannot be in the cell. So the other variant might be a new set of rules: some cells can be blank, you have to put 1-8 in each line/row/box and left exact one blank cell(left as X or some blockage). In these rules, you can write a digit if candidate only fit in one box(even other candidate can be in this box) but you cannot write number if cell has one single candidate(might blank)
That was a fun puzzle. I'd never done a Schrodinger's sudoku before, but even still I managed to get through this one. I liked the logic of it. I did get hung up on the big zipper line in box 9 though when placing a '9' in r7c9 didn't clear fog. Haha. I thought for sure I messed something up and went on a bit of a wild goose chase trying to find my mistake. It took me longer than it should have to realize it just meant that had to be the '7-2' Schrodinger cell. In fairness, I didn't use that unearned knowledge to solve the puzzle. I waited until I could logic which was which, which wasn't until near the end for me.
It actually is pretty approachable, but to always keep all the rules, especially the Schrödinger cells in focus, caused some pain and cost me some time. Great fun though!
Nice puzzle gdc! I got stuck for a bit interpreting the U-turn in R3C3 as the line entering that cell twice, but once I understood it correctly, everything proceeded swimmingly.
The way the instructions were worded, I thought the equidistant digits "adding to the same value" need not be the actual digit(s) at the center of the line
The zipper line definition was somewhat ambiguos. The way it is written, it is not clear that the cells x away from the center of the line must sum to the same as the cells y away from the center of the line.
Schrodinger's Cat must be the most misunderstood thought experiment of all time. It's actually all about a theoretical interaction between the quantum mechanical world and our everyday world.
It was designed to show the ludicrous nature of the idea of superposition. That a quantum effect was not determined until "you" measure it. It did not however thoroughly refute the idea which a number of complex experiments have since supported (or at least consistently failed to refute).
44:00 the paired up little zipper lines in box 8 remind me a lot of thripple lines from a Mark video earlier this week. While the rules that manage them are different, I wonder if thripple lines can be simulated by overlapping zipper lines. Note that this isn't the case here, as the sum of the 3 cells on the non-bulb cells is greater than the bulb if none of them has a value of zero.
It depends. for renbans you usually use both numbers individually, so a 2 cell renban can have 3 an 24 on it. But for "sum constraints" like cages, zippers and region sum lines, adding is the most natural thing to do.
48:33 Simon's hypothetical about two lines in box 9 breaks for sure, because both the sum cells would be on each other's lines, and since neither is a crowded cell* they cannot have the same value, which means the higher of the two is along the line for the lower, which would require a negative value opposite it *Still disagree with calling this type of two-value cell a "Schrödinger cell" since it just has two values in it together rather than a superpositon of two possible values
The only problem I had with this problem was the ruleset. When it says: "Digits an equal distance from the circled center of a lavender zipper line sum to the same number," I took that to mean that those digits equaled each other. As it turns out, they do not sum to the same number of each other, but rather they sum to the number in the circled center of their lavender zipper line. Am I the only one who was confused by this or are the clarified rules poorly worded in this reguard?
1:49:03 - I did make a few mistakes along the way though. Amazing setting, but slightly worrying what can happen next now someone’s started doubling up the lines!
I'm not entirely sure that it's fair to discount a six-length Shelob zipper line (in the box nine). Maybe a little triangle would be visible in R8C8 but maybe not, the lines don't need to be centred.
Just so you know, even your rewritten wording of how zipper lines work is ambiguous. You say that digits an equal distance from the center of a zipper sum to the same line -- I thought that meant that each pair of digits the same distance away had their own sum. Like, the cell 1 away from the center in one direction equaled the cell 1 away in the other direction. But the cells 2 away could be different, they just had to sum to the same thing as each other. Rewording for future zipper puzzles would be much appreciated!
I agree the wording of the zipper line sums was a bit confusing at first. I had interpreted the wording to mean that the center digit was essentially meaningless. It was just that all the digits on one side had to equal all the digits on the other side. I'm not sure why they didn't just explicitly say something like, "The sum of all digits an equal distance from the center circle of a purple line must equal the sum of the digit(s) in the circle."
So negative numbers eh...? I'm thinking a zipper or region sum lines type puzzle, only one digit in each row, column, and box contributes its negative value instead of positive. And somehow one line will cross enough boxes to make a negative total...
gdc here. Thanks so much for this feature. This puzzle took quite a long time to construct in order to present this crazy ruleset in a (hopefully) crisp way. Thanks for everyone involved in testing and especially to the S-cell expert ViKingPrime for the support during development.
Excellent setting! I agree with Viking Prime that this is one of my favorite zippers, FoW, and Schrödinger's sudokus I have played!
My cat wasn't being helpful but at least I think I better understand the concept of shrodinger cells now. Thanks for setting this gdc.
Congrats man. ❤
Absolute brilliance.
@@WimmekeVL I think the cat did help and not help at the same time.
This is ViKingPrime and I stand by every word of that - a most-deserved feature, this one. If you're about to watch the solve, don't shy away from the apparent complexity, this is absolutely an approachable puzzle and one you will relish exploring for yourself first.
I agree with your assessment of the puzzle being one of the best of each category, and also a lot more approachable than it seems. I never really got hung up anywhere and somehow solved in 47m. I was hesitant to even start it looking at the video length. But the logic flows very smoothly!
Edit: after watching Simon's solve, I must say I made a big mistake in my solve. When I revealed the two 2-cell tops to the zipper in box 9, I did not consider the fact that there could be two zippers overlapping. I saw that the center had to be somewhere below r7c9, and therefore falsely assumed it had to be one 7-cell zipper and then proceeded from there. Simon, of course, immediately realized there could have been overlapping zippers and then proceeded until he had enough info to rule that out.
Edit 2: I feel a little better about my mistake seeing that Simon also made a mistake which he only found because his broke the puzzle. And I am definitely glad that my mistake did not break the puzzle because I would not have wanted to go back and figure it out!
I started and solved this puzzle thanks to this comment! Thanks for the inspiration, sorry for one fewer views today Simon
Loved it. Very unique and approachable.
@@MatthewMcDonald0 Oh, I watch the solve regardless, unless the one and only problem is the break-in and the vid is very short. It's like seeing a reaction video if I solved it, and if I didn't solve it... it is like a more awesome reaction video.
I love how the start of the puzzle subtly tells you that the two cells equal each other by being connected by an = sign
Always a treat when Simon breaks out the guitar :)
"...even in this ludicrous puzzle, we can't include minus digits on the other side of the zipper. Do not even think about it. Constructors out there, do not think about it. That is a horrible thought, that doesn't bear any further research or interest, believe me."
From the deepest wells of the 9th circuit of puzzlers' inferno there is immediately heard a bone-shattering scream in unison from tormented setters' souls: "Challenge accepted".
This puzzle was so clearly above my paygrade that I did not attempt to solve it, but man, it was really a fun solve to watch.
I love that the sudoku community has just taken one of Simon's catchphrases and turned it into a standard ruleset.
Edit: Looking forward to someone making a puzzle with negative digits now
Some obscure XV grid where all XV are given but no actual Xs or Vs in the grid? And it's empty except for a 3-cell bent killer cage adding to zero? No, I don't think anyone would want to set, solve or watch that ;)
I want to watch that @@asbjrnfossmo1589
This might just be my favorite sudoku of the year, I had a grin on my face the entire time. I can’t help but wonder where this can be taken next for zipper lines! Wonderfully done GDC!
Yes - I thought that what gdc put in R3C8 was particularly funny.
I honestly did not think I'd make it through this one on my own, but did succeed in 38:06! Amazing puzzle, many thanks to gdc for it!
10/10 👏. What a fantastic puzzle! One of my favourites of 2023. Thank you for the amazing setting
1:06:58 "Somehow it knows" Simon, I'm sure people have said this before but Sven's wonderful software allows the setter to embed the solution into the puzzle - this always seems to surprise you! A moment's thought tells you that this is absolutely necessary for Fog puzzles otherwise the software would not be able to clear the fog when a correct digit is entered.
36:34 ... can't get enough of that wonderful fog
Nice puzzle!
the fact it only tripped you up once AND you managed to find the mistake was pretty cool
This one was one of the best video on the channel.
Sudoku: awesome fog puzzle with amazing zipper line
Solve: super good as always, and you find your mistake pretty quickly
Lord of the Rings: present. Super present. And I love it!!! Shire, Rivendell, Mordor and the Eye of Sauron!!!! Our little hobbits would be happy to be on this channel!!
Thanks for the solve!!! 🤗
ty for showing me new puzzles and reenergizing my love of sudokus. I Much Appreciate the creators and their time to make, it is my fun to do.
I find it so amusing that Simon said that negative digits on zippers didn't bear thinking about and then loved a puzzle with negative digits on zippers.
23:00 negative numbers in Sudoku 🤔... The horror 🤣
I'd love to see it, but given how stuck I get even on GAS puzzles I'll be watching this space for thst 😂
One thought I have for that: make five count as zero, have the even digits count as positive and the digits 1 3 7 9 as negative and one could construct zero sum killer cages and such
I have the oddest memory that I have at least seen the concept of negative values (a digit counting as negative for cage totals etc.) on some sudoku channel on UA-cam! Negative numbers wouldn't be far from that... 😁
@@bluji1250 I may be imagining it, but I think there was a yin-yang a while ago where values in one were positive and in the other were negative, but I can't remember what the values were being used for. Possibly cage totals.
At 22:15 - now everyone is thinking how to make a puzzle with negative modifiers ... and more vicious versions of such
What about negative numbers killer sudoku?
There have been quite a few puzzles with negative modifiers. I even have made one with zipper lines, but it’s really not noteworthy enough for this channel
@@glum_hippo has anybody tried using the numbers between -4 and +4? It seems so obvious that I feel stupid asking, but some questions need asking ;-)
Brilliant. Absolutely love this puzzle!
It's amazing that such a simple setup can make my brain hurt this much. 😅
This is crazy clever.. loved the way you delt with the breakage in column 3. I was very impressed with that one ❤
This puzzle led me to consider an interesting possibility, and that possibility led me to ponder an interesting question: if there was a Sudoku with Schrödinger cells, and the solution of that puzzle had a Schrödinger cell in one of the corners, and that Schrödinger cell had a 3 as one of its digits, would that Schrödinger cell get a song?
Also, it's fairly easy to see how the solution checker can know that the solution is correct even though some cells (9 of them, to be precise) only have central-pencilmarks in them. It's the same way the software knows to clear fog cells when a correct digit is entered: the solution of the puzzle, including its Shrödinger cells, has been included with the puzzle for the software to check against.
I believe in the schrodinger puzzles, the solver checks for ‘blanks’ (no big digits) in the Schrödinger cells. It doesn’t look at pencil marks.
That's three and not three in the corner. That's three and not three in the spotlight both losing and not losing their religion.
@@stephenbeck7222Yes. Easily confirmed by deleting the contents of the Schrödinger cells at the end. It still confirms you have the correct solution.
If you have all the non-Schrödinger cells correct, it is a trivial exercise to fill in the Schrödinger cells with the missing digits, so it just assumes you will have those correct if everything else is correct.
If there was a 3 in a Schrödinger cell in the corner, then Simon would be both singing and not singing.
Never knew schrodinger was also a verb until I started watching this channel
I've never understood a puzzle less. This is miles about my understanding lmao
75 minutes. But more importantly, I finally finished one without needing to watch for any extra bits of logic from Simon!
This took me about 38 minutes tonight on the timer, but I worked it off and on for hours as I celebrated a friend's birthday. This was great fun!
22:49 Love how Simon cannot help himself dreaming up even more complex variations, then tries to put the genie back in the bottle by pleading with constructors not to create them !
I feel like the great "gdc" was chosen to function as a conduit for the eternal source of wisdom, when he channeled this puzzle down from the Crystal Blue Persuasion which transcends all that comes to exist.
This is one of my most favorite puzzles and solves on this channel. Thank you!
My second puzzle before watching the video! 01:16:59 I did have to watch the explanation on the Schrodinger cells but once that made sense the puzzle worked out wonderfully
22:53 Simon has to add this few second at the begining of every suduku solve with negetive number on it 😂.
I love Schrödinger sudoku, and this particular combination is awesome. Those zipper lines turning back on themselves are fun. It's my favourite puzzle in a long time; which says something considering the brilliance of some of the recent puzzles.
Kayleigh intro, nice.
I love how at 1:01:25 in Simon highlights the third column, saying "I haven't filled in 1589" when on the seventh row of the column the next numbers in the row are: 518 ... leaving a skyclad single 9. "I can sense this digit is under pressure," is simply golden. Sometimes I wonder if Simon is distracted too much by genius level math to spot what's right in front. Sometimes I hope he's just playing a game (well, duh, Sudoku one might hope) with us and leaving us room to feel smart. Never change! :)
The breakin for this puzzle was super fun and interesting
32 minutes here. I love the Schroedinger puzzles, this was a great use of them
What a great puzzle&solve!
This puzzle was truly amazing. It can look intimidating at first but it wasn't too hard to solve (this is actually the first and only puzzle with schrodinger cells that I've been able to solve on my own). What a late year treat!
17:37 for me. What a great puzzle!!
The name of this one is hillairous, it's such a great wordplay on Zipper Line and Zipperlein (German for "ache", but it's a dimunitive and usually used in a humorous way to refer to all the small body pains old age brings - or, more sarcastic, to poke fun at people who are constantly complaining about small aches to get attention).
Wowzers, probably the most challenging I've ever found a FoW puzzle. Took a full 40:11, and very nearly called it quits. What a satisfying achievement though! Brilliant puzzle.
Even though I solved it without any help I can not comprehend the fact that it is solvable from only those two cells in the beginning.
Have to admit I was very surprised when the 4 appeared.
I wonder if there is scope to have 0 digits in a sudoku without the Schrodinger's cells (ie 0-8) - seems they can make some unique logic with rules like zipper lines.
47:39, with a little bit of Simon's help for the break-in. What a lovely puzzle!
Schrodinger Sudoku is my absolute favorite variant!
So much hilarious logic. Forces the solver to stop and think - especially slower people like me. When I reached that 13 pair in r4c4, I kept thinking "how do I resolve this?" lol
i love when simon plays the guitar for the intro :)
I've never been this early to a CTC video. I'm gonna watch the video before I attempt it myself, I think.
61mn for me. Really nice puzzle, nice logic from start to end. Thank you, gdq!
Great idea for a new construction at 22:50
Such a beautiful puzzle. Really enjoyable to solve and watch being solved. I only had one stumble as well, but mine was in box nine with that wily zipper in the shadows.
22:50 y'all heard Simon, we need a puzzle with negative numbers involved!
Finished in 98:51. I don't think I could have done it without the fog feedback telling me I had bad logic though. Several points I had what I thought would be a good digit and it wasn't, so I had to backtrack to see what was wrong, and it was always a Schrodinger cell I hadn't fully considered.
Excellent guitar intro 🎉🎉🎉 cheers
You identified Mordor and I thought that's only true if three isn't in the corner. And you were right. It was Mordor
Enjoyable puzzle, thanks. For some reason I decided to make life more difficult for myself by thinking the puzzle had doublers rather than S cells, and kept having to shake off that delusion.
Live me some fog of war. Can't wait to watch!
The whole time Simon is working on the lines in b9 I'm sitting here thinking "you have all the natural numbers penciled so you know what those 3 boxes contain even knowing one is Scheoedinger"
i was a little scared when I see the length of the vid, but I give it a try, and it is not terrible difficult. I made a couple of mistakes here and there, but fog is really helpful to point out any mistake you are making.
The rules don't state that the center of a zipper line must be the sum of digits equal distance from it.
That is a crazy clever puzzle.
one way of doing the "negative (number) constraint" is to say in the rules that there are cells which deduct the number instead of adding it within other rules (like here where you have to add up numbers on the line)
I think there was an easier way to see that those lines towards the end had to join up rather than run beside each other as you feared; there is no need to look at actual numbers. If that had happened, the centre of each line would have been a non-central cell on the other. A non-central cell has to be less than or equal to the central cell of its line, and only equal if the corresponding cell on the other side is zero. As each of the two centres has to be less than or equal to the other they must actually be equal. Hence there would be a zero on each line, but in different places in the box, thus breaking sudoku. Alternatively you could argue that the two centres have to have equal values so one of them must be schrodinger, and in this particular case both of the positions where the centres would have to be had already been shown to be non-schrodinger by the placement of schrodinger cells in other boxes.
Edit: No, the first method I suggested fails. One of the zeros is just over the boundary of the box. But I think the alternative method still works, at least if you do things in the order that I did.
CORRECTION
For some reason I'm not managing to edit this comment -- the edit just disappears into the void. I just wanted to say that my first suggested method fails, as one of the zeros is just outside the box. But I think the alternative method still works, at least if you work in the order that I did.
Not sure if Simon will get to it, but where does 9 go in box 2 is where I went. But that didn't mean a 0 had to go on the other side of what appears after that. So I'm too dumb for this puzzle. Hopefully I won't feel as intelligency challenged after watching this video.
Zipperlein is a German expression (maybe borrowed, not sure about that) meaning aches/minor pains Like in "Ihn plagt das Zipperlein" = "He is plagued by something" (roughly). Nice play on words here.
Kayleigh! Nice Simon
btw, "Zipperlein" in German is vernacular for age-related ailments (originally gout, but all kinds of ailments can be called "Zipperlein"). It is rather uncommon these days, it's an old saying (my grandma and mom used it, it's been oder 20 years that I heard someone use it)
Zipperlein is a very old-fashioned German word. It describes minor ailments of elderly people in a tongue-in-cheek way, or can be used as an (even more old-fashioned) term for gout.
I’m not aware if Schrödingee himself suffered from gout or lived to be old…?
I took me some time but I actually did remember what the intro song was. 😊 (Marillion's Kayleigh)
I had to listen to the intro twice to get it. I went to see Steve Hackett in the Usher Hall. Fish was in the audience and was signing autographs during the interval.
Every time I open the puzzle in the Android version of Sven's Sudokupad, it reveals different extra cells. First it was R2C2 (plus R3C4 and R3C5), the next time it was R1C1 (plus R3C4 and R3C5). Schrödinger indeed!
Wow, the Schrodinger/sum rule made the deduction quite a different. More like sufficient condition vs necessary condition to me.
For a normal sudoku, if the number 2 appear in a cell, you can just write it. For this s-sudoku, you can only leave it as a candidate.(it might sum to others)
But the reverse situation kept: if the cell only contain number 2 as candidate, you can just write it as other numbers cannot be in the cell.
So the other variant might be a new set of rules: some cells can be blank, you have to put 1-8 in each line/row/box and left exact one blank cell(left as X or some blockage). In these rules, you can write a digit if candidate only fit in one box(even other candidate can be in this box) but you cannot write number if cell has one single candidate(might blank)
That was a fun puzzle. I'd never done a Schrodinger's sudoku before, but even still I managed to get through this one. I liked the logic of it. I did get hung up on the big zipper line in box 9 though when placing a '9' in r7c9 didn't clear fog. Haha. I thought for sure I messed something up and went on a bit of a wild goose chase trying to find my mistake. It took me longer than it should have to realize it just meant that had to be the '7-2' Schrodinger cell. In fairness, I didn't use that unearned knowledge to solve the puzzle. I waited until I could logic which was which, which wasn't until near the end for me.
Let's Get Cracking: 08:05
Simon's time: 58m51s
Puzzle Solved: 1:06:56
What about this video's Top Tier Simarkisms?!
Bobbins: 1x (52:41)
Knowledge Bomb: 1x (39:00)
Three In the Corner: 1x (47:41)
You Rotten Thing: 1x (1:06:30)
And how about this video's Simarkisms?!
Ah: 20x (09:42, 17:15, 28:16, 29:03, 29:25, 31:13, 32:57, 35:34, 43:42, 43:42, 45:18, 48:05, 48:49, 52:39, 53:53, 59:16, 1:00:27, 1:03:14, 1:05:02, 1:06:08)
Hang On: 15x (08:18, 08:18, 28:16, 29:06, 32:35, 32:35, 37:07, 37:25, 38:07, 48:05, 49:07, 49:07, 49:07, 52:08)
Beautiful: 9x (31:07, 36:29, 43:50, 43:53, 45:09, 45:11, 57:48, 1:07:17, 1:07:19)
In Fact: 6x (02:53, 08:12, 14:04, 25:35, 44:49, 1:01:56)
What on Earth: 5x (30:43, 34:48, 37:25, 1:00:27, 1:02:01)
Sorry: 5x (21:53, 32:44, 54:02, 55:14, 1:00:58)
Clever: 5x (29:25, 29:29, 31:16, 1:07:41, 1:07:44)
Brilliant: 5x (12:59, 1:03:22, 1:03:25, 1:07:08, 1:07:08)
Surely: 4x (33:29, 37:03, 40:44, 48:14)
Obviously: 4x (01:29, 01:32, 18:16, 26:54)
What Does This Mean?: 4x (21:15, 31:31, 56:00, 1:05:30)
Pencil Mark/mark: 4x (15:42, 15:59, 31:46, 1:01:34)
By Sudoku: 3x (46:14, 1:04:43, 1:05:35)
Bonkers: 3x (15:35, 29:58, 30:02)
Bother: 2x (53:01, 58:31)
The Answer is: 2x (29:42, 1:04:30)
I Have no Clue: 2x (31:36, 31:41)
Lovely: 2x (37:35, 1:07:29)
Going Mad: 2x (1:01:16, 1:03:01)
Wow: 2x (39:49, 56:24)
Cake!: 2x (04:23, 04:24)
Weird: 2x (59:09, 59:09)
Good Grief: 1x (38:39)
Nonsense: 1x (44:56)
Naughty: 1x (49:35)
Break the Puzzle: 1x (1:00:12)
Incredible: 1x (01:05)
Ridiculous: 1x (31:16)
Gorgeous: 1x (32:57)
Shouting: 1x (04:45)
Intriguing: 1x (02:26)
Most popular number(>9), digit and colour this video:
Twelve (15 mentions)
One, Two (86 mentions)
Green, Blue (4 mentions)
Antithesis Battles:
High (2) - Low (2)
Even (10) - Odd (1)
Higher (5) - Lower (0)
Highest (3) - Lowest (0)
Outside (2) - Inside (0)
Column (27) - Row (11)
FAQ:
Q1: You missed something!
A1: That could very well be the case! Human speech can be hard to understand for computers like me! Point out the ones that I missed and maybe I'll learn!
Q2: Can you do this for another channel?
A2: I've been thinking about that and wrote some code to make that possible. Let me know which channel you think would be a good fit!
39:58 "It's not 45, 36, or 18..." It's as quickly eliminated but in this puzzle did leave out one option there...
44:47, and I totally had to take a look to see how to begin. Zeroes make it hard! I had a hard time keeping track of doubles vs pencil marks.
Finished in 27:54. Not sure if I made an assumption that I shouldn't have? It seemed relatively straightforward to go through the puzzle.
Fun puzzle!
Zipperlein in German means minor ailment, aches and pains. I wonder if this will help in the solve
It actually is pretty approachable, but to always keep all the rules, especially the Schrödinger cells in focus, caused some pain and cost me some time. Great fun though!
I really liked the puzzle except for the last pair of boxes ( box 7, box 4) Got really confused trying to find the right order of Schrodinger cells
52:18 for me. Magnificent fog of war puzzle!
Nice puzzle gdc! I got stuck for a bit interpreting the U-turn in R3C3 as the line entering that cell twice, but once I understood it correctly, everything proceeded swimmingly.
The way the instructions were worded, I thought the equidistant digits "adding to the same value" need not be the actual digit(s) at the center of the line
Line at the bottom right corner could have been diagonal which renders the logic invalid. Still an amazing puzzle and a solver!
The zipper line definition was somewhat ambiguos. The way it is written, it is not clear that the cells x away from the center of the line must sum to the same as the cells y away from the center of the line.
Schrodinger's Cat must be the most misunderstood thought experiment of all time. It's actually all about a theoretical interaction between the quantum mechanical world and our everyday world.
It was designed to show the ludicrous nature of the idea of superposition. That a quantum effect was not determined until "you" measure it. It did not however thoroughly refute the idea which a number of complex experiments have since supported (or at least consistently failed to refute).
44:00 the paired up little zipper lines in box 8 remind me a lot of thripple lines from a Mark video earlier this week. While the rules that manage them are different, I wonder if thripple lines can be simulated by overlapping zipper lines. Note that this isn't the case here, as the sum of the 3 cells on the non-bulb cells is greater than the bulb if none of them has a value of zero.
Keeping that blue cell which only served a momentary purpose in this sudoku with a special meaning for colored Schrödinger cells was against any OCD
This is the first schrondinger I ever solved. I may try more now that I get it. I didn't know you supposed to add the values of schrodinger cells.
It depends. for renbans you usually use both numbers individually, so a 2 cell renban can have 3 an 24 on it. But for "sum constraints" like cages, zippers and region sum lines, adding is the most natural thing to do.
48:33 Simon's hypothetical about two lines in box 9 breaks for sure, because both the sum cells would be on each other's lines, and since neither is a crowded cell* they cannot have the same value, which means the higher of the two is along the line for the lower, which would require a negative value opposite it
*Still disagree with calling this type of two-value cell a "Schrödinger cell" since it just has two values in it together rather than a superpositon of two possible values
The only problem I had with this problem was the ruleset. When it says: "Digits an equal distance from the circled center of a lavender zipper line sum to the same number," I took that to mean that those digits equaled each other. As it turns out, they do not sum to the same number of each other, but rather they sum to the number in the circled center of their lavender zipper line. Am I the only one who was confused by this or are the clarified rules poorly worded in this reguard?
Marilyn inrto! 🤘😎🤘
01:03:18 for me. Great puzzle with some fun logics with the '0's. Kind Comment.
1:49:03 - I did make a few mistakes along the way though. Amazing setting, but slightly worrying what can happen next now someone’s started doubling up the lines!
I made the same mistake on R9C3.
so what about negative digits setters?
I get the feeling someone else has been watching Lord of the Rings over the holidays. 😅
I love Fog Sudoku I love Fog Sudoku
Anyway, did this one in 30:44
wow, hardest GASFOG puzzle ever! Solved in 14:59.
I'm not entirely sure that it's fair to discount a six-length Shelob zipper line (in the box nine). Maybe a little triangle would be visible in R8C8 but maybe not, the lines don't need to be centred.
Just so you know, even your rewritten wording of how zipper lines work is ambiguous. You say that digits an equal distance from the center of a zipper sum to the same line -- I thought that meant that each pair of digits the same distance away had their own sum. Like, the cell 1 away from the center in one direction equaled the cell 1 away in the other direction. But the cells 2 away could be different, they just had to sum to the same thing as each other. Rewording for future zipper puzzles would be much appreciated!
I agree the wording of the zipper line sums was a bit confusing at first. I had interpreted the wording to mean that the center digit was essentially meaningless. It was just that all the digits on one side had to equal all the digits on the other side. I'm not sure why they didn't just explicitly say something like, "The sum of all digits an equal distance from the center circle of a purple line must equal the sum of the digit(s) in the circle."
Solved it without help from the video.
86:55 after a lot of trial & error
So negative numbers eh...? I'm thinking a zipper or region sum lines type puzzle, only one digit in each row, column, and box contributes its negative value instead of positive. And somehow one line will cross enough boxes to make a negative total...