AnalyticalNinja here, just wanted to say thank you so much for featuring this puzzle! I honestly think this was probably one of the most rewarding creations I've made in some time and working with Kafkapharnaum on it was so much fun! Also, I was pleasantly surprised that you were able to quickly deduce the possibility you'd missed partway through the solve, backtrack, and remedy it once seen. Amusingly, that exact deduction was one of my own personal favorites from the whole puzzle! 😆
@@eefaaf Whoa, nice to see someone who even knows that band! Although to be honest, it was certainly about 50-50 with just the meaning that this name ended up taking, it just seemed to fit well with Kafka XD (A1 music playlist by the way -- strangely now I have an urge to put Thick as a Brick hehe)
Thank you so much for featuring this puzzle! Thrilled to see that you and so many others have enjoyed this wacky ride! AnalyticalNinja and I certainly had a lot of fun making it, and all the more so that we pretty much managed to incorporate every single funny and ridiculous ideas we could think of XD I have yet to watch this behemoth of a feature in full, but I know there are many things that I am very much looking forward to see!
Wickedly clever! That was hard, but not too much, just perfect! Deductions were hard but beautiful, i.e. not "grinding", even for the harder ones. The hardest part though was to not miss any option at any point (bodysnatchers seriously throw every logic out the window 😅), i.e. it was really easy to make a mistake. Thanks for this genius puzzle!
@@bodemeister118 Fancy seeing you here! Yep, it's been woven in utmost secrecy in preparation for a Body Snatcher invasion hehe. Thanks for the kind words and the interest! And many thanks also to everybody else for all the kind comments! 🙏
Best renban puzzle ever? I think it might be. The 20 cell renban, necessitating all possible values on it, was right up my street. it’s so amazing how every variant sudoku puzzle has its own little storyline and journey it takes you on, and boy what a journey this solve path is…
Same here, I felt I understood the puzzle pretty quickly. Still took me two hours, because I kept having to back up after making extremely silly mistakes because I decided it was a good idea to start at 3 in the morning.
@martysears And what to think about the snatcher 3 stealing the value of a doubled 1 to make 3? I thought immediately it would be the kind of trick we would see in one of your puzzles.
I hovered over the scroll bar to see when he would enter it and was a bit baffled that it took him so long to get it. But it somehow was the most Simonesque way possible, i.e. not asking this question at all but doing some weird complicated stuff xD
That's because Simon's brain works at such a high level that he has to disengage in order to even see normal sudoku. And, that is why I love watching his long videos.
This puzzle was far too clever for me, but what a stunner! And what an entertaining video. The absolute joy on your face Simon when describing the "Vampire Snatching Nonsense Creature" absolutely made my day. Many thanks.
I agree this is one of the most astonishing Sudokus, ever. I was shouting: "Where is C in box 5?", but you didn't hear me, I know. About the body snatcher 2, that could have been in r4c9 or r7c1: If r7c1 would be 2, the natural 2 on the left (second longest) line would have been in r6c2 and therefore r6c9 would not be 2 and r4c9 - the other candidate for the 2 body snatcher, would also be 2, and that doesn't work. Those were the two deductions you were missing and the first one took you a long way before you bravely reverted a lot. Well done!
Wow I love these puzzles where the logic is so beautiful and I need someone like Simon to elucidate it for me. Thank you so much for sharing these with us Simon they bring a heap of joy. Thanks also to the constructors who set Simon these challenges 😊😊.
Great job solving this Simon!! Truly masterful puzzle. AnalyticalNinja and Kafkapharnaum thank you both so much for colloborating on this and setting with such flair!!!!
Really nice puzzle. Solved it in 79 minutes, although I did rely on the conflict checker to get me back on track after one error half way through, so not an entirely clean solve. I was hoping Simon would see there was only one place 2 could go in row 4 for the longest time. From around 58:30 in Simon's solve, I labelled A further around the grid, and found that the only green body snatcher cell it could go in was r1c2, in box 1. Then, using the renban it was on in box 1, I worked out it would have to body snatch it's own digit value, and was therefore a 3. So I got A as 3 before seeing the relationship between B and C on the eleven cell renban, giving them as 2 and 4.
Really great solve as always. i had a deduction near the beginning that simon missed that really helped in the middle-end of the solve. if you look at 30:58 and ask where the yellow squares from box 5 are in box 6, they aren't in the same row, they aren't yellow nor A, so they have to be in the remaining 3 boxes. not mush comes immediately from that except being able to put the bottom 2 of them from box 6 into box 4. At 1:10:35 however it places the 2 in box 6 and then in boxes 7, 1 and 4. simon didn't deduce these until the very end. at 30:58, you can also ask where the yellow squares from box 3 are in box 6. they're in 3 cells. this one didn't prove as fruitful as the others however
I wasn't going to try to solve this one because I'm behind a bit and focusing on the easier puzzles until I catch up again. But I got so impatient with Simon forgetting that 0 is a thing right at the beginning that I stopped watching and went away and solved it myself :D Lots of fun to solve but I'm even more behind now!
My first 5/5 difficulty solve, took me 147 minutes. Got badly stuck twice, but other than that it was fairly straight forward, not sure I would personally rate it 5/5, maybe 4/5.
At 1:29:15, you just got through identifying two cells, both in column 2, that could be the 2 on the renban, and then you immediately pencil mark a 2 in r4c2! There's only one place in row 4 for 2, and it's in the body snatcher cell in box 6. And that then fixes 2 in box 7.
41 minutes and i just placed my first digit, I was curious if I could even figure out the break in, and I did - which is huge. I don't think I can solve this puzzle, I'll give it a few more turns, but that's a win for me.
In theory, you can have a double 5 off the line, snatch that to create 11, allowing you to also snatch 9 to make 10. But in doing so you would need a snatcher in 7 boxes, and the line only visits 6.
Why can't you have 6789 double + snatcher in boxes, 2345. Double 5 in the centre of box 6 not being snatched and 11 being snatched from a double 5 off the line in col 9 box 9? That's how I started and still can't see why that wouldn't be a possibility.
When I put a 3 in the body snatcher cell in box one I stared at it in horror thinking "oh my god where did I go wrong?" for a full minute before realising the 3 could still be itself. It was terrifying.
@SirJefferE I experienced the same horror! Dejected, I came to look at the video to find where I went wrong. I saw Simon had the three where I had it and I stared for a minute until I realized what was happening.
I think this is the first 5/5 difficulty puzzle that i managed to solve without consulting the video. And what a lovely puzzle it was, thanks for showing it to us!
Very interesting video. It seemed like the logic just absolutely flowed and could have been shorter if you could keep up with it all, but slow and steady wins the race and you did it. Congrats!
01:12:08 for me. I’ve been a subscriber for almost 5 years now, this might just be the best puzzle I’ve solved. I’m gonna do something I’ve never done before and watch the video of the puzzle I solved myself. I want to see Simon mesmerized. 😅
Just watched the video. It is a difficult puzzle but let’s admit it, a Simon who’s on his day could solve this in half this time, easily. He was on it on the first crack but then a lot was missed. :/ This puzzle deserved a better video. :(
I think people underestimate how taxing is to record oneself explaining every decision, talking for 2 hours. I didn’t feel Simon different than his usual self. It might be that, since u knew the answer, you were more anxious than usual regarding moments where he was stuck?
This might be my favorite renban puzzle ever. I messed up coloring 234s because I couldn't keep track of which bodysnatcher digits had been used, and it took me 3 hours, but the breakin and subsequent logic were an absolute delight.
Wow that was tough! Got this one in 09:48:34. So much fun to boggle at the possibility of a 20-cell renban, and figuring out you need to borrow zeroes on both lines was fun. After putting in the first 1 I thought "What shall I do next? It can't possibly be sudoku on 1's, since I've only got a single digit in the entire puzzle." But then I tried that anyways and immediately got 2 more 1s thanks to the renbans.
1:02:49 finish. I made an early error labeling my 2-3-4 triples, which eventually broke. Fortunately, the penciling was independent of the coloring, and I just wiped the numbers and restarted that part. It was easy enough to pick back up once I realized where I had made the error. An awesome idea for a puzzle, excellent job!
What an amazing puzzle! 99:33 for me; quite proud that I never messed up the logic. Wasted quite a few minutes at the beginning considering the possibility that the 20-cell renban might be 1...20, which of course was just me muddying the two rules together.
I know this is not how it works, but seeing the chaos in the grid 15 minutes before the end of the video, I can't help but wonder whether Simon is going to be able to finish his solve in time :)
Wow, what an epic Sudoku! I was shouting internally about the 2 for most of the video (which Simon could place on the line the first time he looked at it) but other than that, and excellent solve!
What an absolutely gorgeous puzzle. I actually had to talk through the logic of the long renban to my wife (who doesn't like variant sudokus) to understand how it worked and then that gave me the first digit at 12 minutes. Solved in what felt like a very fast 61:27. I just didn't feel the time pass on that one: the hallmark of a beautifully crafted puzzle.
And as Simon was touching on, I think that B has to be twice on the line, once it was doubled. It is the only doubled digit on the line and the snatcher are 0 and 10.
I've just got to the hour mark in the video, and I was wondering whether Simon got lucky pencil marking C in box 4 on the line as a natural C. I agree with you, all Simon knows is that either A or C is 4, and appears on the renban as a doubled B, which is 2. No-one else seems to have mentioned it, and I was beginning to doubt myself until I saw your comment. I'll keep watching... Edit: Ok, he wasn't getting lucky, and it breaks, so he will be forced to fix it. Phew.
This superb construction is _"absolutely worth its place in the pantheon of truly"_ *cosmic class* masterpieces. Innovative, impressively smart, challenging but never brutal and purely mono-thematic, as it contains nothing else than *renbans.* Magnificent achievement❗ I am certain it will be included in the next *CTC Cosmic Hits* book. 👏👏👏👏👏👏👏👏👏👏👏👏👏 Thank you *AnalyticalNinja* and *Kafkapharnaum* for designing it. Thank you *Simon* for featuring it and presenting it so thoroughly and enthusiastically both in the introduction and in the video-description.
Thanks to everyone involved with that epic puzzle. Way above my pay-grade, but it was nice to be able to follow Simon's logic. Great solve, as always Simon. Sometimes you seem to get so involved with the puzzle logic, that you forget that it is really just a sudoku. There were a couple of instances of me screaming at you to do a bit of sudoku. It would have saved a few of your brain cells from becoming fried, and probably saved 20 minutes of solve time.
Really glad to see a video here on this, both because it's a great puzzle, and because it makes me feel better about my 3 hour solve time, which it turns out is actually still pretty close to my average time of 1.5x the video length of your solve of the puzzle lol.
I finished in 199:09 minutes. This was an incredibly well thought out puzzle with so much cool logic. The beginning didn't feel difficult at all. Once I colored everything, it felt much more difficult. However, I think it may have been my brain fatiguing from the journey there. I spent a good while lost, which turned out to be me mislabeling a 234. I had noticed that I had too many similar digits in my 234 doublers. Correcting that put me back on track, until I thought I truly broke the puzzle. I was sure all my logic was correct, but the only place for a 3 was in r1c2. I for sure that this broke it. To my absolute delight, I saw that it could be referencing the digit it holds. That felt like such a troll move to put so late in the puzzle. From there, I finished easily. This was such a good puzzle that was super satisfying, albeit with a lot of brain power, to solve. This has to be one of my favorites. Great Puzzle!
Awesome solve, I couldn't have done it myself but was able to understand the logic seeing Simon do it, at the end when he had the new "A" marks, from box 4 he could deduce that A had to be 5 or 6, which excludes a lot of possibilities on other marked A's (reducing them to 5 or 6)
I don't really know how long I've spent on this puzzle, but I have finally solved it and it has been a really splendid challenge throughout. I ended up restarting the puzzle multiple times, because I just couldn't keep my flow across interruptions leading to multiple mistakes along the way. Now to see if you found a better way to keep track of the logic as you went.
Somehow I got that done in 122 minutes. It seemed to flow really well and I never felt like I was totally stuck anywhere, which could be me missing possibilities or something but it went really well for a puzzle with that rating.
I solved it but my brain hurts. Its a good pain though. So many little things in this puzzle, it fights you the whole way but no one thing was monstrously hard. I dont think I can pick one favorite part. Fully deserving of both the 5 stars AND the 100%. You can't hear me but I am applauding.
About 2:25:00 - I restarted after an hour as I’d finally realised one if my deductions was flawed! What a brilliant puzzle though - really chuffed to have got the break in unaided.
This turned out to be more do-able than I thought. Took me 100 minutes, which is at least under the video time. I really enjoyed figuring out the logic on this one!
Here is what pieguy recommended: "The recipe follows. I'm omitting the recipe for pie crust but I can provide it upon request. For the filling: 1.5 cups sugar 6 tablespoons cornstarch 1/2 teaspoon salt 1/2 cup lemon juice 2 cups water 3 yolks, beaten 3 tablespoons butter zest of 1 lemon For the meringue: 3 egg whites 4 Tablespoons sugar (optional) 1/8 teaspoon cream of tartar a splash of vanilla extract First, pre-bake your pie crust. Mix sugar, cornstarch, and salt in a medium saucepan. Add lemon juice and water, and whisk until no lumps remain. Add egg yolks while constantly whisking. Bring to a boil while gently stirring and let simmer for 1 minute. Remove from heat, then stir in butter and zest. Pour into crust. In a very clean bowl, mix egg whites and sugar (and cream of tartar) until sugar has dissolved. It's important that your whites not have even a drop of yolk in them, or else the meringue will not form properly. Beat the whites until stiff peaks form. Careful not to overbeat. Stir in vanilla extract, then spread over top of pie. If you want to get real fancy, you can use a piping bag, but I usually just use a spatula to shape the top after it's on. Bake at 350F for about 10-15 minutes, or until the meringue just starts to turn golden. Let cool completely and refrigerate before serving. For best results, serve to someone who enjoys eating good lemon meringue pie."
At 58:52 you’ve assumed that C has to be on the line - but could it not be the case that C or A has to be on the line (with the other being double B) - have watched on a bit more so understand that one doesn’t have to be - but not sure if I’m missing how you know it’s A and not C Love the videos!
Pleased to say I figured out the key to the long line before Simon 😎 A slight ricket at 16:00 - the 11 needs to be a bodysnatcher snatching the body of a doubled 5, but _the doubled 5 doesn't need to be on the line_ - the 10 on the renban could still be a bodysnatched natural 9 (which may or may not be on the line) with the doubled 5 being off the line (or potentially on a different line) - or at least, it could until a moment later when he counts the possible number of bodysnatcher cells!
At 1:14:22 Simon correctly says that 8 or 9 can't be values on the renban in box 1, but why can't they be in the green cell. I feel as though it could be done with something like a 789 triple in R1C2, R3C2, R3C3, a 2 in R2C2 and the rest of the cells being 3456 to create a 123456 renban (doubled 1 body snatched 2) Edit: It doesn't end up mattering because the 3 takes the green cell in box 1 because if 3 in box 1 is in R2C1 or R2C2 there will be no 3's in any green cells
Yeah right at the start I wondered how Simon concluded that 1 couldn’t be in one of the shaded squares in boxes 2 and 3 when he then placed it in a shaded square in box 5..
Aww so close. I did so much of the heavy lifting myself but then completely missed the effect that the double 1 had on the bodysnatcher in box 1. I knew it had to be a 3 but kept trying to stuff a 4 in R1C3 to make it work. Great puzzle!
49:04 For me, I was half expecting to get stuck on something just because getting all the special cells approximate location in the first 10 minutes felt suspiciously easy but it just went smoothly from there
Me: ok, that 2567 quad means that r4c9 is the only place for a 2 in row 4 Simon 15 minutes later: "How can it possibly be the case that I don't know which of these digits is a 2?" Amazing puzzle.. No way I would have worked through it all on my own, very nicely done.
You can actually disambiguate the 2s in green already at 1:12:39. If the 2 is in R7C1, then there can't be a 2 in R4C9 (another green cell), forcing it into R6C9. By Sudoku, the 2 in box 4 would have to go in R4C2. This would leave no place for a natural 2 on the renban line, breaking the puzzle. The only other option puts a 2 directly on the line, and forces a 2 into the green cell in box 6, since that's now the only green cell that can accept a 2.
this was difficult. but was not as hard as i thought it was going to be. i thought i would get stuck and need to revert to the video but it was approachable. i made some errors along the way but i did manage to get through it. just over 2 hours for me. i havn't watched the video yet but the break through for me was noticing the 234 pairs and figuring out where they go.
BHUNTER47 here - this legitimately is one of the greatest puzzles I've ever solved. A masterpiece. Downloaded this to work on during vacation and it was just an absolute blast to solve.
Miraculously clever puzzle. But not Simon's best effort. His sloppy technique came back to bite him badly after he failed, for the umpteenth time, to keep his pencil marks clean at 1:33:58, where removal of the 2 from r4c2 meant that r4c9 was a 2. The puzzle deserved a cleaner solve.
I would agree on the 100% rating. Absolutely beautiful piece. But I don't understand the 5/5 for difficulty, just as I didn't understand the “1/5“ puzzle (by GDC?) featured a few days ago.
It's a good job Simon explained the body snatcher clue because it wasn't at all clear to me (and still isn't from the rules!) that the digit in the body snatcher cell is not actually relevant to its body snatcherness! Is it just me?! I guess that understanding could have been reached by trying to solve the puzzle and then getting completely confused and realising something was awry.
It's explicit in the rules, but I solved without listening to the intro and I also found that confusing. Also hard to keep track of pencil marking the two distributed sets in dominoes that contain both special cells in unknown order. Almost wish there were colors for pencil marks...was already using letters for something else.
Did Simon not realize that C could only go in row 4 in box 5?? He was hypothecating for the longest time that C could go in R4C1 and I'm just sitting there like "uhhh"
SImon‘s talent to use a piece of logic just to abandon it instead of re-using it for the logical implication a second later is, once again, a bit uncanny. The way he disproved 2 from r2/3c2 by the interference of bodysnatcher (or green) 2s on box 4 (and the 11-cell renban) works exactly identical for placing 2 in r7c2, as the only possible natural 2 on the line: every other constellation puts 2 in green in r7c1, displacing it from green in r4c9 and putting it in r6c9, removing the last natural 2 from the line
I think Simon is wrong at the end of the first hour: he places C but then realises there is no place for A so it’s made by doubled B. But this logic applies to the earlier placed C as well, and you can’t just assume it.
I identified that it must be 0-19 and not 1-20 way before Simon. That however is the full extent of my ability with this puzzle. But I’ll take any win I can get.
If you liked this & missed Foggy Banren by @chrisbattey (Darth Paradox), go back a month and check it out. Another tough one with beautiful logic & similar themes, with Schrödinger cells and fog. I marvel at how Simon avoids getting stuck for very long--he apologizes when he's been quiet or stymied for even 20 s. I think he must have a clear grasp of all the possible attack routes and weak points at any stage of solving. Unless they involve sudoku, of course... 😀
*20-Renban* Body Snatcher: 19, 17, 15, 13, 11, 0 Doubler: 18, 16, 14, 12 Possible for both: 10 Because Renban goes through 6 Boxes and we already used 6 Body Snatchers, the 10 has to be a Doubler. Body Snatcher: 19, 17, 15, 13, 11, 0 Doubler: 18, 16, 14, 12, 10 19 and 18 (2x9), 17 and 16 (2x8), 15 and 14 (2x7), 13 and 12 (2x6), 11 and 10 (2x5) have to be in the same Box. Because in Box Column [3,6,9] there has to be 3 Body Snatcher and all on the 20-Renban, we have a Body Snatcher in Box 9 forced in column 8. This results in a Body Snatcher in r4c9 in Box 6. Because the Body Snatcher in r4c9 is not adjacent with a possible Doubler on the 20-Renban, it has to be Body Snatcher 0. 19:40 Continue
AnalyticalNinja here, just wanted to say thank you so much for featuring this puzzle! I honestly think this was probably one of the most rewarding creations I've made in some time and working with Kafkapharnaum on it was so much fun!
Also, I was pleasantly surprised that you were able to quickly deduce the possibility you'd missed partway through the solve, backtrack, and remedy it once seen. Amusingly, that exact deduction was one of my own personal favorites from the whole puzzle! 😆
Thanks for the great puzzle.
This is just phenomenal from both of you!! I mean how do you even set this or come up with these variants!!
You again, what is this! :O LMD, Body Snatchers, Skunkworks, random 99% groups, I think this means we're just going to have to collab again! XD
@@kafkapharnaum2690 So, what version of Capharnaum ended up in your name? The town, the movie, or the band. (Or none of the above :)
@@eefaaf Whoa, nice to see someone who even knows that band! Although to be honest, it was certainly about 50-50 with just the meaning that this name ended up taking, it just seemed to fit well with Kafka XD
(A1 music playlist by the way -- strangely now I have an urge to put Thick as a Brick hehe)
Thank you so much for featuring this puzzle! Thrilled to see that you and so many others have enjoyed this wacky ride! AnalyticalNinja and I certainly had a lot of fun making it, and all the more so that we pretty much managed to incorporate every single funny and ridiculous ideas we could think of XD
I have yet to watch this behemoth of a feature in full, but I know there are many things that I am very much looking forward to see!
Thank you for sharing this wonderful piece. I really enjoyed it.
Wickedly clever! That was hard, but not too much, just perfect! Deductions were hard but beautiful, i.e. not "grinding", even for the harder ones. The hardest part though was to not miss any option at any point (bodysnatchers seriously throw every logic out the window 😅), i.e. it was really easy to make a mistake. Thanks for this genius puzzle!
For the next one you should put a 3 in the corner that is not a 3, and see if Simon does a little Schrodinger song...
Congratulations on the feature! I didn't know this puzzle existed. Will try it shortly!
@@bodemeister118 Fancy seeing you here! Yep, it's been woven in utmost secrecy in preparation for a Body Snatcher invasion hehe. Thanks for the kind words and the interest!
And many thanks also to everybody else for all the kind comments! 🙏
Just gonna sit back and watch the video, because I don't have a clue
I watched it and didn’t have a clue the whole time. lol but enjoyed listening to Simon
That’s what I always do 😂
Dont even have the concept of a clue w this one
Normally I like to attempt these puzzles with really long videos, but after hearing the rules here, I just noped out.
Best renban puzzle ever? I think it might be. The 20 cell renban, necessitating all possible values on it, was right up my street. it’s so amazing how every variant sudoku puzzle has its own little storyline and journey it takes you on, and boy what a journey this solve path is…
Same here, I felt I understood the puzzle pretty quickly. Still took me two hours, because I kept having to back up after making extremely silly mistakes because I decided it was a good idea to start at 3 in the morning.
@martysears And what to think about the snatcher 3 stealing the value of a doubled 1 to make 3? I thought immediately it would be the kind of trick we would see in one of your puzzles.
@@pouletbelette that was great although I initially thought it would be a 1 and a 2 swapping places like Simon also postulated at one point
Seems like Simon could have saved about 30 minutes by asking where the 2 went in row 4
Yes, he identified the 2567 quadruple on the 11-cell line, but then didn’t see that that forced the placement of 2 in row 4 unfortunately.
I hovered over the scroll bar to see when he would enter it and was a bit baffled that it took him so long to get it. But it somehow was the most Simonesque way possible, i.e. not asking this question at all but doing some weird complicated stuff xD
That's because Simon's brain works at such a high level that he has to disengage in order to even see normal sudoku. And, that is why I love watching his long videos.
He intentionally avoids filling in some digits to have an engagement for his videos. And it works.
This puzzle was far too clever for me, but what a stunner! And what an entertaining video. The absolute joy on your face Simon when describing the "Vampire Snatching Nonsense Creature" absolutely made my day. Many thanks.
I agree this is one of the most astonishing Sudokus, ever.
I was shouting: "Where is C in box 5?", but you didn't hear me, I know.
About the body snatcher 2, that could have been in r4c9 or r7c1: If r7c1 would be 2, the natural 2 on the left (second longest) line would have been in r6c2 and therefore r6c9 would not be 2 and r4c9 - the other candidate for the 2 body snatcher, would also be 2, and that doesn't work.
Those were the two deductions you were missing and the first one took you a long way before you bravely reverted a lot. Well done!
Wow I love these puzzles where the logic is so beautiful and I need someone like Simon to elucidate it for me. Thank you so much for sharing these with us Simon they bring a heap of joy. Thanks also to the constructors who set Simon these challenges 😊😊.
Amazed I solved this. Chasing the ones around was truly delightful and it never cracked and became trivial. A joy from start to finish.
Great job solving this Simon!! Truly masterful puzzle.
AnalyticalNinja and Kafkapharnaum thank you both so much for colloborating on this and setting with such flair!!!!
Really nice puzzle. Solved it in 79 minutes, although I did rely on the conflict checker to get me back on track after one error half way through, so not an entirely clean solve.
I was hoping Simon would see there was only one place 2 could go in row 4 for the longest time.
From around 58:30 in Simon's solve, I labelled A further around the grid, and found that the only green body snatcher cell it could go in was r1c2, in box 1. Then, using the renban it was on in box 1, I worked out it would have to body snatch it's own digit value, and was therefore a 3. So I got A as 3 before seeing the relationship between B and C on the eleven cell renban, giving them as 2 and 4.
I usually avoid watching longer puzzles, but this one was truly a delight.
Thank you Simon and Ninja and Kafka!
This puzzle is truly a masterpiece. The logic is brilliant. Loved it.
Really great solve as always.
i had a deduction near the beginning that simon missed that really helped in the middle-end of the solve. if you look at 30:58 and ask where the yellow squares from box 5 are in box 6, they aren't in the same row, they aren't yellow nor A, so they have to be in the remaining 3 boxes. not mush comes immediately from that except being able to put the bottom 2 of them from box 6 into box 4. At 1:10:35 however it places the 2 in box 6 and then in boxes 7, 1 and 4. simon didn't deduce these until the very end.
at 30:58, you can also ask where the yellow squares from box 3 are in box 6. they're in 3 cells. this one didn't prove as fruitful as the others however
1h37m here. I loved it. I absolutely cackled when I realized what the body snatcher 3 was doing in box 1. Just completely brilliant.
I wasn't going to try to solve this one because I'm behind a bit and focusing on the easier puzzles until I catch up again. But I got so impatient with Simon forgetting that 0 is a thing right at the beginning that I stopped watching and went away and solved it myself :D Lots of fun to solve but I'm even more behind now!
That puzzle has such a beautiful solve-path. I really enjoyed solving it and then watching Simon do it - with a small hiccup - so nicely
My first 5/5 difficulty solve, took me 147 minutes. Got badly stuck twice, but other than that it was fairly straight forward, not sure I would personally rate it 5/5, maybe 4/5.
My first 5 difficulty too. I like ones where I don't have to do too much maths or set theory and this certainly avoided those bugbears.
Sudoku setter: Let's see how many times I can Simon get to say bodysnatcher in one video..
Nori nori!
At 1:29:15, you just got through identifying two cells, both in column 2, that could be the 2 on the renban, and then you immediately pencil mark a 2 in r4c2! There's only one place in row 4 for 2, and it's in the body snatcher cell in box 6. And that then fixes 2 in box 7.
Four minutes later he ALMOST sees it again as he removes the 2 from r4c2 but doesn't follow up with placing it for row 4 in column 9 ;-)
41 minutes and i just placed my first digit, I was curious if I could even figure out the break in, and I did - which is huge. I don't think I can solve this puzzle, I'll give it a few more turns, but that's a win for me.
In theory, you can have a double 5 off the line, snatch that to create 11, allowing you to also snatch 9 to make 10. But in doing so you would need a snatcher in 7 boxes, and the line only visits 6.
Why can't you have 6789 double + snatcher in boxes, 2345. Double 5 in the centre of box 6 not being snatched and 11 being snatched from a double 5 off the line in col 9 box 9? That's how I started and still can't see why that wouldn't be a possibility.
@@peterscott2782Can't have two doubled 5s in different boxes.
@@davidpayne7409oh dear. Missed a rule again. Thanks for pointing that out David.
1: I identify as 2 and
2: I identify as 1
finally 3 snatching to get it's identity back
Truly ludicrous
Yes, that trick with the bodysnatching 3 left me laughing.
When I put a 3 in the body snatcher cell in box one I stared at it in horror thinking "oh my god where did I go wrong?" for a full minute before realising the 3 could still be itself. It was terrifying.
@SirJefferE I experienced the same horror! Dejected, I came to look at the video to find where I went wrong. I saw Simon had the three where I had it and I stared for a minute until I realized what was happening.
I loved this section! Gave me quite a laugh!
I think this is the first 5/5 difficulty puzzle that i managed to solve without consulting the video. And what a lovely puzzle it was, thanks for showing it to us!
It’s such a blessing when Simon shows his fallibility, because it tests how confident I’m willing to be when I think I see something.
And, to be fair, I didn’t even try it and know I wouldn’t have gotten anywhere.
Very interesting video. It seemed like the logic just absolutely flowed and could have been shorter if you could keep up with it all, but slow and steady wins the race and you did it. Congrats!
01:12:08 for me. I’ve been a subscriber for almost 5 years now, this might just be the best puzzle I’ve solved. I’m gonna do something I’ve never done before and watch the video of the puzzle I solved myself. I want to see Simon mesmerized. 😅
Just watched the video. It is a difficult puzzle but let’s admit it, a Simon who’s on his day could solve this in half this time, easily. He was on it on the first crack but then a lot was missed. :/ This puzzle deserved a better video. :(
I think people underestimate how taxing is to record oneself explaining every decision, talking for 2 hours. I didn’t feel Simon different than his usual self. It might be that, since u knew the answer, you were more anxious than usual regarding moments where he was stuck?
This might be my favorite renban puzzle ever. I messed up coloring 234s because I couldn't keep track of which bodysnatcher digits had been used, and it took me 3 hours, but the breakin and subsequent logic were an absolute delight.
Wow that was tough! Got this one in 09:48:34. So much fun to boggle at the possibility of a 20-cell renban, and figuring out you need to borrow zeroes on both lines was fun. After putting in the first 1 I thought "What shall I do next? It can't possibly be sudoku on 1's, since I've only got a single digit in the entire puzzle." But then I tried that anyways and immediately got 2 more 1s thanks to the renbans.
1:02:49 finish. I made an early error labeling my 2-3-4 triples, which eventually broke. Fortunately, the penciling was independent of the coloring, and I just wiped the numbers and restarted that part. It was easy enough to pick back up once I realized where I had made the error. An awesome idea for a puzzle, excellent job!
What an amazing puzzle! 99:33 for me; quite proud that I never messed up the logic. Wasted quite a few minutes at the beginning considering the possibility that the 20-cell renban might be 1...20, which of course was just me muddying the two rules together.
I know this is not how it works, but seeing the chaos in the grid 15 minutes before the end of the video, I can't help but wonder whether Simon is going to be able to finish his solve in time :)
Came for the Sudoku, stayed for the Vampire Bodysnatching Nonsense Creature.
Wow, what an epic Sudoku! I was shouting internally about the 2 for most of the video (which Simon could place on the line the first time he looked at it) but other than that, and excellent solve!
What an absolutely gorgeous puzzle. I actually had to talk through the logic of the long renban to my wife (who doesn't like variant sudokus) to understand how it worked and then that gave me the first digit at 12 minutes. Solved in what felt like a very fast 61:27. I just didn't feel the time pass on that one: the hallmark of a beautifully crafted puzzle.
45:15 for me. Omg what an incredible puzzle. This is without a doubt the best one I've solved in quite a long time. Absolutely fantastic.
59:20 If B is 2 and C is 4, C is not on the long line....
I believe the reasoning right after should be that we can't put both A and C on the line, so one of them is 4 and B is 2.
And as Simon was touching on, I think that B has to be twice on the line, once it was doubled. It is the only doubled digit on the line and the snatcher are 0 and 10.
Looks like Simon got a problem along his line. (1:05:10)
And at 1:22:10 we get the 3 on the line. *phew*
I've just got to the hour mark in the video, and I was wondering whether Simon got lucky pencil marking C in box 4 on the line as a natural C. I agree with you, all Simon knows is that either A or C is 4, and appears on the renban as a doubled B, which is 2.
No-one else seems to have mentioned it, and I was beginning to doubt myself until I saw your comment.
I'll keep watching...
Edit: Ok, he wasn't getting lucky, and it breaks, so he will be forced to fix it. Phew.
Great puzzle and a very Simonesque solve
Thoroughly enjoyable
Such a great puzzle! Proud to say I finished in 61 minutes!
This superb construction is _"absolutely worth its place in the pantheon of truly"_ *cosmic class* masterpieces. Innovative, impressively smart, challenging but never brutal and purely mono-thematic, as it contains nothing else than *renbans.*
Magnificent achievement❗ I am certain it will be included in the next *CTC Cosmic Hits* book.
👏👏👏👏👏👏👏👏👏👏👏👏👏
Thank you *AnalyticalNinja* and *Kafkapharnaum* for designing it. Thank you *Simon* for featuring it and presenting it so thoroughly and enthusiastically both in the introduction and in the video-description.
Thanks to everyone involved with that epic puzzle. Way above my pay-grade, but it was nice to be able to follow Simon's logic. Great solve, as always Simon. Sometimes you seem to get so involved with the puzzle logic, that you forget that it is really just a sudoku. There were a couple of instances of me screaming at you to do a bit of sudoku. It would have saved a few of your brain cells from becoming fried, and probably saved 20 minutes of solve time.
Really glad to see a video here on this, both because it's a great puzzle, and because it makes me feel better about my 3 hour solve time, which it turns out is actually still pretty close to my average time of 1.5x the video length of your solve of the puzzle lol.
I finished in 199:09 minutes. This was an incredibly well thought out puzzle with so much cool logic. The beginning didn't feel difficult at all. Once I colored everything, it felt much more difficult. However, I think it may have been my brain fatiguing from the journey there. I spent a good while lost, which turned out to be me mislabeling a 234. I had noticed that I had too many similar digits in my 234 doublers. Correcting that put me back on track, until I thought I truly broke the puzzle. I was sure all my logic was correct, but the only place for a 3 was in r1c2. I for sure that this broke it. To my absolute delight, I saw that it could be referencing the digit it holds. That felt like such a troll move to put so late in the puzzle. From there, I finished easily. This was such a good puzzle that was super satisfying, albeit with a lot of brain power, to solve. This has to be one of my favorites. Great Puzzle!
Really excited from the beginning of the video reading this title!
Thanks for this
Wow - all of my hats of to the setters!
"Vampire body-snatching nonsense creature" is not something you hear in every sudoku video
I did this one last night and thought to myself "Can't wait for the CTC video on this". Here it is!
Awesome solve, I couldn't have done it myself but was able to understand the logic seeing Simon do it, at the end when he had the new "A" marks, from box 4 he could deduce that A had to be 5 or 6, which excludes a lot of possibilities on other marked A's (reducing them to 5 or 6)
I don't really know how long I've spent on this puzzle, but I have finally solved it and it has been a really splendid challenge throughout. I ended up restarting the puzzle multiple times, because I just couldn't keep my flow across interruptions leading to multiple mistakes along the way. Now to see if you found a better way to keep track of the logic as you went.
52:57 that move was awesome. Happy when I saw it and happy when Simon saw it
59:36 this was also my favorite bit of logic and when Simon saw it all was right with the world! Joy was indeed in little things
1:01:49 I only got that's interesting on this one that I also found joyfull
Somehow I got that done in 122 minutes. It seemed to flow really well and I never felt like I was totally stuck anywhere, which could be me missing possibilities or something but it went really well for a puzzle with that rating.
Haha, I was about to post the same thing, it also took me 122 minutes! No idea how I managed to solve it though.
Yes.. ! A Friday Marathon - Let's Go!😁
Surprised this only took me 90 minutes. I found all the 1s in the puzzle in the first 24 minutes so i guess that helped.
I solved it but my brain hurts. Its a good pain though. So many little things in this puzzle, it fights you the whole way but no one thing was monstrously hard. I dont think I can pick one favorite part. Fully deserving of both the 5 stars AND the 100%. You can't hear me but I am applauding.
About 2:25:00 - I restarted after an hour as I’d finally realised one if my deductions was flawed! What a brilliant puzzle though - really chuffed to have got the break in unaided.
As a fan of the metal band Bodysnatcher, this was quite an amusing video lol.
This turned out to be more do-able than I thought. Took me 100 minutes, which is at least under the video time. I really enjoyed figuring out the logic on this one!
Too many question marks and knots in my brain. I have given up. My respect to Simon and everyone else who was able to solve this massive puzzle.
Would love to see the lemon meringue pie recipe. It’s my family’s favorite dessert, yes even more than chocolate icing accompanied by a dab of cake. 😋
Here is what pieguy recommended: "The recipe follows. I'm omitting the recipe for pie crust but I can provide it upon request.
For the filling:
1.5 cups sugar
6 tablespoons cornstarch
1/2 teaspoon salt
1/2 cup lemon juice
2 cups water
3 yolks, beaten
3 tablespoons butter
zest of 1 lemon
For the meringue:
3 egg whites
4 Tablespoons sugar
(optional) 1/8 teaspoon cream of tartar
a splash of vanilla extract
First, pre-bake your pie crust. Mix sugar, cornstarch, and salt in a medium saucepan. Add lemon juice and water, and whisk until no lumps remain. Add egg yolks while constantly whisking. Bring to a boil while gently stirring and let simmer for 1 minute. Remove from heat, then stir in butter and zest. Pour into crust.
In a very clean bowl, mix egg whites and sugar (and cream of tartar) until sugar has dissolved. It's important that your whites not have even a drop of yolk in them, or else the meringue will not form properly. Beat the whites until stiff peaks form. Careful not to overbeat. Stir in vanilla extract, then spread over top of pie. If you want to get real fancy, you can use a piping bag, but I usually just use a spatula to shape the top after it's on. Bake at 350F for about 10-15 minutes, or until the meringue just starts to turn golden. Let cool completely and refrigerate before serving. For best results, serve to someone who enjoys eating good lemon meringue pie."
@@CrackingTheCrypticyum! 😋
@@CrackingTheCrypticmmmm indeed..thank you for providing this to us!!
@@longwaytotipperaryyum yum
At 58:52 you’ve assumed that C has to be on the line - but could it not be the case that C or A has to be on the line (with the other being double B) - have watched on a bit more so understand that one doesn’t have to be - but not sure if I’m missing how you know it’s A and not C
Love the videos!
Then I kept watching! Thanks for all the time showing off these amazing puzzles! A joy to watch you solve them every day!
Pleased to say I figured out the key to the long line before Simon 😎
A slight ricket at 16:00 - the 11 needs to be a bodysnatcher snatching the body of a doubled 5, but _the doubled 5 doesn't need to be on the line_ - the 10 on the renban could still be a bodysnatched natural 9 (which may or may not be on the line) with the doubled 5 being off the line (or potentially on a different line) - or at least, it could until a moment later when he counts the possible number of bodysnatcher cells!
At 1:14:22 Simon correctly says that 8 or 9 can't be values on the renban in box 1, but why can't they be in the green cell. I feel as though it could be done with something like a 789 triple in R1C2, R3C2, R3C3, a 2 in R2C2 and the rest of the cells being 3456 to create a 123456 renban (doubled 1 body snatched 2)
Edit: It doesn't end up mattering because the 3 takes the green cell in box 1 because if 3 in box 1 is in R2C1 or R2C2 there will be no 3's in any green cells
Yeah right at the start I wondered how Simon concluded that 1 couldn’t be in one of the shaded squares in boxes 2 and 3 when he then placed it in a shaded square in box 5..
I was wondering the same.. thanks for the clarification why it doesn't matter after all :)
This was a whopper (70:53 for me) but it definitely lived up to the description. Easily one of the most satisfying puzzles I've ever done.
Aww so close. I did so much of the heavy lifting myself but then completely missed the effect that the double 1 had on the bodysnatcher in box 1. I knew it had to be a 3 but kept trying to stuff a 4 in R1C3 to make it work. Great puzzle!
49:04 For me, I was half expecting to get stuck on something just because getting all the special cells approximate location in the first 10 minutes felt suspiciously easy but it just went smoothly from there
I’ve read the directions 3 times, now I’m going to watch Simon to understand how it works. 🤔
That is wise advice my friend. 😀💙🩵
Me: ok, that 2567 quad means that r4c9 is the only place for a 2 in row 4
Simon 15 minutes later: "How can it possibly be the case that I don't know which of these digits is a 2?"
Amazing puzzle.. No way I would have worked through it all on my own, very nicely done.
Sensational!
This puzzle should be called the Manhattan Project, it's so ridiculously hard to solve. It also finishes with a BOOM...! - 1:51:30
Oh boy, 2h. That's gonna be a good one.🎉
Amazing puzzle!
So amazing indeed!!! 🙂🙂
This was awesome!
At 1:24 you could call it an eigen snatcher
You can actually disambiguate the 2s in green already at 1:12:39. If the 2 is in R7C1, then there can't be a 2 in R4C9 (another green cell), forcing it into R6C9. By Sudoku, the 2 in box 4 would have to go in R4C2. This would leave no place for a natural 2 on the renban line, breaking the puzzle. The only other option puts a 2 directly on the line, and forces a 2 into the green cell in box 6, since that's now the only green cell that can accept a 2.
this was difficult. but was not as hard as i thought it was going to be. i thought i would get stuck and need to revert to the video but it was approachable. i made some errors along the way but i did manage to get through it. just over 2 hours for me. i havn't watched the video yet but the break through for me was noticing the 234 pairs and figuring out where they go.
Rules: 06:27
Let's Get Cracking: 10:12
Simon's time: 1h41m20s
Puzzle Solved: 1:51:32
What about this video's Top Tier Simarkisms?!
Bobbins: 2x (32:49, 1:27:51)
Three In the Corner: 2x (1:16:52, 1:17:07)
And how about this video's Simarkisms?!
By Sudoku: 16x (20:19, 23:24, 30:38, 35:01, 37:37, 51:35, 54:45, 1:32:20, 1:34:30, 1:43:12, 1:43:23, 1:45:19, 1:47:26, 1:47:26, 1:48:17, 1:50:06)
Ah: 16x (13:26, 15:59, 19:29, 22:56, 22:56, 30:19, 32:49, 36:39, 43:49, 46:31, 46:31, 59:21, 1:07:14, 1:34:33, 1:41:53, 1:48:59)
Hang On: 15x (11:03, 20:36, 21:25, 27:10, 36:41, 40:39, 42:25, 54:39, 59:21, 1:15:22, 1:18:46, 1:24:30, 1:28:36, 1:49:53)
Sorry: 13x (13:29, 13:29, 13:32, 13:32, 16:50, 30:07, 35:12, 36:12, 57:24, 1:05:59, 1:28:54, 1:30:13, 1:38:31)
Clever: 11x (55:14, 1:12:40, 1:13:16, 1:13:16, 1:13:19, 1:34:36, 1:34:42, 1:35:34, 1:38:04, 1:51:44, 1:52:17)
Goodness: 9x (07:46, 24:54, 25:36, 25:59, 44:42, 1:22:29, 1:22:35, 1:22:58, 1:51:36)
In Fact: 9x (00:44, 02:26, 26:46, 33:47, 51:42, 1:07:01, 1:07:05, 1:22:35, 1:30:23)
Brilliant: 8x (04:07, 06:13, 18:18, 24:40, 44:26, 44:28, 1:51:23, 1:51:36)
Weird: 8x (24:21, 25:18, 27:34, 55:22, 1:11:04, 1:11:09, 1:11:09, 1:40:02)
Wow: 7x (16:30, 54:21, 1:15:59, 1:16:06, 1:25:22, 1:35:15, 1:48:54)
Pencil Mark/mark: 7x (27:08, 37:40, 48:57, 1:18:40, 1:18:44, 1:27:39, 1:46:56)
Nonsense: 6x (36:28, 36:39, 59:54, 1:11:44, 1:24:00, 1:24:04)
Obviously: 5x (43:11, 57:11, 1:00:47, 1:43:01, 1:45:24)
Good Grief: 4x (39:58, 1:14:15, 1:50:42)
Beautiful: 4x (19:29, 1:08:02, 1:08:05, 1:26:28)
Nature: 4x (09:04, 18:26, 18:44, 32:54)
What on Earth: 3x (29:00, 1:19:59, 1:20:25)
The Answer is: 3x (48:00, 1:21:20, 1:28:28)
Naughty: 3x (14:00, 1:25:18, 1:50:54)
Stuck: 3x (31:52, 1:39:00, 1:39:00)
What a Puzzle: 2x (51:57, 1:51:39)
Break the Puzzle: 2x (24:44, 1:03:55)
Surely: 2x (1:27:10, 1:39:05)
That's Huge: 2x (44:28, 1:41:53)
Cake!: 2x (03:53, 04:26)
Bother: 1x (50:24)
Incredible: 1x (00:47)
Extraordinary: 1x (1:48:56)
Take a Bow: 1x (1:51:47)
Shouting: 1x (05:40)
Masterpiece: 1x (01:29)
Progress: 1x (1:16:59)
Let's Take Stock: 1x (1:39:19)
Next Trick: 1x (38:14)
Most popular number(>9), digit and colour this video:
Ten (15 mentions)
One (155 mentions)
Green (30 mentions)
Antithesis Battles:
High (13) - Low (2)
Even (8) - Odd (0)
Lower (3) - Higher (2)
Column (15) - Row (7)
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!
you missed ludicrous
I wonder how many times Simon said bodysnatcher!
59:26 Simon says "I "C" it!" - yes, exactly this was the problem 😅
That was a brute. I don't know how many times I re-started it. 6 hours and 41 minutes.
I'm sad that Simon didn't sing for the 3 in the corner, that was actually a doubled one that was bodysnached into a 3!
BHUNTER47 here - this legitimately is one of the greatest puzzles I've ever solved. A masterpiece. Downloaded this to work on during vacation and it was just an absolute blast to solve.
58:53 you're a rockstar, get the show on, get paid
Simon sounds like a crime scene this evening.
that vampire nonsense creature that consumes its neighbor to become itself made me rethink my place in the cosmos
Miraculously clever puzzle. But not Simon's best effort. His sloppy technique came back to bite him badly after he failed, for the umpteenth time, to keep his pencil marks clean at 1:33:58, where removal of the 2 from r4c2 meant that r4c9 was a 2. The puzzle deserved a cleaner solve.
Taking out those corner letter pencil marks really backfired 😅
I would agree on the 100% rating. Absolutely beautiful piece. But I don't understand the 5/5 for difficulty, just as I didn't understand the “1/5“ puzzle (by GDC?) featured a few days ago.
It's a good job Simon explained the body snatcher clue because it wasn't at all clear to me (and still isn't from the rules!) that the digit in the body snatcher cell is not actually relevant to its body snatcherness! Is it just me?! I guess that understanding could have been reached by trying to solve the puzzle and then getting completely confused and realising something was awry.
It's explicit in the rules, but I solved without listening to the intro and I also found that confusing. Also hard to keep track of pencil marking the two distributed sets in dominoes that contain both special cells in unknown order. Almost wish there were colors for pencil marks...was already using letters for something else.
Did Simon not realize that C could only go in row 4 in box 5?? He was hypothecating for the longest time that C could go in R4C1 and I'm just sitting there like "uhhh"
At 1:14:30 there can still be an 8/9 "on the line" in the body snatcher cell, since its digit doesn't matter.
SImon‘s talent to use a piece of logic just to abandon it instead of re-using it for the logical implication a second later is, once again, a bit uncanny. The way he disproved 2 from r2/3c2 by the interference of bodysnatcher (or green) 2s on box 4 (and the 11-cell renban) works exactly identical for placing 2 in r7c2, as the only possible natural 2 on the line: every other constellation puts 2 in green in r7c1, displacing it from green in r4c9 and putting it in r6c9, removing the last natural 2 from the line
He used impeccable logic to get the 2 in box 1, but then missed the same logic mirrored to get the 2 in box 3 at 1:29:00
I was hoping he would spot the 2 in row 4 for so long. (I think you meant box 6, not 3).
I think Simon is wrong at the end of the first hour: he places C but then realises there is no place for A so it’s made by doubled B. But this logic applies to the earlier placed C as well, and you can’t just assume it.
Time for popcorn!
SO MUCH POPCORN!
That was a weird one, difficult it took me 2 hours but never frustrating.
No recipe link?! :D
Take a bow Simon!
I identified that it must be 0-19 and not 1-20 way before Simon. That however is the full extent of my ability with this puzzle. But I’ll take any win I can get.
Long crossword, long sudoku. Not getting much done today 😂
If you liked this & missed Foggy Banren by @chrisbattey (Darth Paradox), go back a month and check it out. Another tough one with beautiful logic & similar themes, with Schrödinger cells and fog.
I marvel at how Simon avoids getting stuck for very long--he apologizes when he's been quiet or stymied for even 20 s. I think he must have a clear grasp of all the possible attack routes and weak points at any stage of solving. Unless they involve sudoku, of course... 😀
*20-Renban*
Body Snatcher: 19, 17, 15, 13, 11, 0
Doubler: 18, 16, 14, 12
Possible for both: 10
Because Renban goes through 6 Boxes and we already used 6 Body Snatchers, the 10 has to be a Doubler.
Body Snatcher: 19, 17, 15, 13, 11, 0
Doubler: 18, 16, 14, 12, 10
19 and 18 (2x9), 17 and 16 (2x8), 15 and 14 (2x7), 13 and 12 (2x6), 11 and 10 (2x5) have to be in the same Box.
Because in Box Column [3,6,9] there has to be 3 Body Snatcher and all on the 20-Renban, we have a Body Snatcher in Box 9 forced in column 8. This results in a Body Snatcher in r4c9 in Box 6.
Because the Body Snatcher in r4c9 is not adjacent with a possible Doubler on the 20-Renban, it has to be Body Snatcher 0.
19:40 Continue