One Of The Best Constructed Puzzles We've Ever Seen

[@Ytterbio]

Fantastic solve as always by Simon, finding the intended solution path pretty much perfectly! It's definitely one of my personal favorites that I've set in quite a while. Fun fact: this puzzle was set during my downtime at a technical conference, so it's possible that I was able to get some sort of inspiration from the various aerospace presentations I attended.

[@CrankyOtter]

I appreciate how the coloring and numbers are highly interdependent instead of separate pieces of the puzzle.

[@tornadre]

This was a really great puzzle. Really great chain of logic that was interesting the whole way through!

[@Paolo_De_Leva]

Lovely variety of interactions between renban regions, white dots and circles.

[@katiekawaii]

​@@CrankyOtterMe too! By having to go back and forth, switching up your approach, you get to feel the excitement of discovery throughout the solve instead of all at once. There wasn't a single tedious moment in this puzzle.

[@10prozenthimmel]

Great construction, very satisfyingly neat. I had to laugh at how the wall blocks digits from vision not only for circle cells but also for Simon 59:08: He clearly sees the 8 but not the purple 9 right next door. Immediately rules out 9 from the pencil marks though via a much more complex deduction, but funny nonetheless.

[@robertprior9964]

Aarrgh, you missed part of the wall 🙂

[@CharlieGrant88]

➖

[@casualpuck]

Hate to ruin your day, but two parts actually: bottom right corner was skipped

[@craigfjay]

50:00 a more generic rule for the renban region of box 6: two of the digits are each on a white dot. That means both of those digits are the highest and lowest on the renban, and they need need another digit higher or lower not on the renban. So the renban can never include either 1 or 9, since the white dot digit would be off the scale. That places the 1 and 9 in r56c9

[@stangerrits6712]

Saw that too. The deduction was not as heavily sudoku-based as Simon made it. With the two white dots, the set of digit in the renban needs two 'escapes', one on either side of the set.

[@dustpan5356]

When a 100% rated puzzle is featured on this channel, it is rarely still rated that highly by the time I look at it in LMD. So, I like to look at the list of who solved it and when (as compared to when the video released). In a couple cases, a puzzle only had 5-10 solves prior to the CTC video, which can obviously skew the rating since it’s only had a few solves. In this case, it appears there were 50+ solves of this puzzle before the video meaning this is truly a 100% puzzle. Loved every minute of solving it.

[@kevinarchibald6757]

Hands down one of my favorite puzzles. At first glance the rules seemed intimidating, but I started to get little bits of info that fed into bigger clues and before I knew it I had a few digits. I love the ways the rules interact and it felt like I was solving a lot of small puzzles that fed back into the big picture

[@danwagner3720]

One of the best "Simon" solves ever. (Yes, I love all of Simon's videos). My lowly brain marvels at his god-like logic. I did see the naked single 2 quite a while before Simon did, only because while he was working through the high logic, I was mucking around with basic soduko.

[@jackjack9196]

It was a long time i didnt have this good of a time solving a puzzle. This was on the spot, logic was always neither too hard nor too easy, every step towards the solution felt amazing until i placed the last few digits. The best puzzle of the channel in these first couple of weeks of 2025 in my opinion

[@jackjack9196]

Btw, i almost never watch the videos, usually i just open the description and click on the link to try myself, so i dont know how good the experience was for the ones watchjng

[@inspiringsand123]

Rules: 09:33 Let's Get Cracking: 16:02 What about this video's Top Tier Simarkisms?! Three In the Corner: 3x (1:03:05, 1:11:55, 1:12:11) Bobbins: 1x (40:55) Chocolate Teapot: 1x (1:03:35) The Secret: 1x (17:04) And how about this video's Simarkisms?! Checkerboard: 15x (17:25, 21:46, 21:55, 32:39, 32:42, 33:34, 33:37, 43:10, 54:14, 55:36, 55:50, 57:13, 58:23, 1:15:29, 1:18:35) Hang On: 10x (17:04, 28:44, 28:44, 45:49, 59:20, 1:02:07, 1:13:45, 1:18:16, 1:18:16) By Sudoku: 7x (35:09, 35:36, 37:35, 1:00:44, 1:06:17, 1:08:16, 1:18:50) Sorry: 6x (20:47, 38:41, 1:01:21, 1:09:07, 1:13:18, 1:20:14) Brilliant: 6x (01:08, 06:26, 51:47, 51:51, 53:45, 53:50) In Fact: 6x (29:37, 36:33, 36:43, 52:49, 56:27, 1:03:07) Clever: 5x (33:23, 33:26, 49:18, 1:03:37, 1:19:54) Ah: 5x (48:09, 51:21, 57:13, 57:13, 1:10:58) What on Earth: 4x (31:11, 52:28, 1:08:11, 1:12:19) Goodness: 4x (19:11, 33:49, 1:19:06, 1:20:06) Lovely: 4x (22:22, 33:46, 49:12, 1:20:31) Obviously: 4x (25:29, 34:53, 54:04, 55:36) Nature: 4x (35:41, 45:24, 1:00:28, 1:00:57) Weird: 4x (30:14, 32:08, 1:04:57, 1:16:22) Beautiful: 3x (07:38, 37:13, 49:12) Whoopsie: 2x (37:53, 37:55) Wow: 2x (1:01:41, 1:16:28) Pencil Mark/mark: 2x (1:08:07, 1:08:08) Good Grief: 1x (1:16:20) What a Puzzle: 1x (1:19:45) Bother: 1x (1:08:07) Naked Single: 1x (1:11:44) Naughty: 1x (1:11:44) In the Spotlight: 1x (1:12:13) Stuck: 1x (1:04:51) Elegant: 1x (1:14:10) Deadly Pattern: 1x (1:19:17) Hypothecate: 1x (40:58) Spider-Sense: 1x (48:28) Witty: 1x (07:38) Stunning: 1x (01:11) Unbelievable: 1x (1:19:45) I Digress: 1x (05:53) Fabulous: 1x (1:20:36) Have a Think: 1x (14:26) Most popular number(>9), digit and colour this video: Sixty Seven, Seventy Eight (5 mentions) Two (97 mentions) Green (109 mentions) Antithesis Battles: High (2) - Low (2) Even (9) - Odd (4) Shaded (15) - Unshaded (7) Lowest (7) - Highest (3) White (6) - Black (1) Row (4) - Column (3) 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!

[@dancingwithyourghost9087]

I'm sorry what

[@st3phgr1ce]

Fantastic puzzle ❤ Really enjoyed your solve Simon kudos to yttrio🎉

[@kobs_0]

what a fantastic puzzle. Resolving box 4/7 at the end was quite brutal for me, but so satisfying once I found it. Thanks to yttrio for this masterpiece!

[@donmaster8345]

Extremely good puzzle, loved every second of it!

[@Xelopheris]

50:00 the easier explanation for box 6 is that the white dots on the renban have to be extreme on the renban, and they need space for 1 additional digit outside the renban on the white dot. That puts a 19 pair in r56c9, the white dot forces the 9 in row 6, you get an 8 on the renban, and it fills out

[@wordclover]

Similarly, the easier explanation for box 4 is that the green high digit in r4c2 has to get out via a 123 in r6c13, turning r5 green.

[@craigyoung8008]

Simon has just finished 52:53 showing you can’t have 1 or 9 in the renban sequence of box-6. But there was a much simpler way to do this. Because the renban sequence connects to 2 kropki dots in the box, you simply can’t have an extreme digit in the renban area. Suppose you did have for example 9. Then the renban area would contain 98765. One kropki dot could be a 4 connecting to 5. And the other would be unable connect via consecutive digits. (Exactly the same problem occurs if the renban has a 1.) Essentially, each dot needs to connect to opposite ends of the renban sequence. I.e. dot1-shaded, dot1-unshaded, mid-renban, dot2-unshaded, dot2-shaded

[@leigh-annesmith8415]

I have been watching for a good little while now. I love you and marks videos. I decided to get on logic masters and I found that I am not good at solving what I assumed were the “very easy” puzzles so as to boost my confidence and I find I get stuck a lot. So maybe it because I am actually trying to solve difficult puzzles that have been trolled. 😢 I really want to get to the point where I can solve higher rated puzzles but we all have to start somewhere.

[@williammorris7279]

May I intervene and suggest the new-ish channel Genuinely Approachable Sudoku, where a daily puzzle is posted, created by constructors who have been featured a lot on CtC? Their puzzles are lovely, and they do walk-throughs rather than blind solves, so one can learn the optimal path.

[@bobblebardsley]

Re the malicious downvoting, I was once standing next to a friend in a major UK high-street retailer when an employee handed him an iPad-like tablet and asked him to complete a quick 5-star rating of the quality of service he had received. He said yes, no problem, and with a big smile on his face (and luckily out of sight of the employee) he rated them 1-star on each of the 4-5 criteria on their survey. When we left the shop I asked him why he did that (he's normally a very nice guy) and he 100% seriously told me that "you can't get better than #1". He legit thought that 1 was the best score on a 5-star rating and that it was supposed to be interpreted as a ranking rather than as a score. So... sometimes there are strange but completely innocent reasons behind some of these things, too!

[@CrankyOtter]

Your friend didn’t want to fill out the form, did it maliciously and lied to you with a smile on his face. No one with an iota of modern literacy would think 1 stars is better than 5.

[@bobblebardsley]

@@CrankyOtter You weren't there and you don't know my friend. Admittedly you don't know me either so you've no reason to trust me, but I can 100% guarantee that is genuinely what he thought.

[@arandamei2189]

While Simon Is, as usual, charitable, it's likely that the nutcases downvote puzzles because they get irritated when they can't solve them.

[@estherwestbroek]

Actually in the German school system 1, lowest number, is top mark.

[@ecMathGeek]

There are two companies I've had to communicate with over the phone several times recently. Both have a "after this call, please take a short survey" request. On one, the options are "1 is good, 2 is bad." On the other, the options are "scale of 1 to 5, where 5 is best, 1 is worst." I've come close to giving a horrible rating on the second one many times because I've grown accustomed to the first.

[@Cassiebsg2]

Thanks for the wonderful solve! I would have never have spotted the start, until you pointet it out (I had already used 2-3 hours looking at it, with zero progress)... But once you explained it, I paused the video again, and went om my merry go round and solved it! :) Then back her to appreciate how much faster it can be done. 🥰

[@katiekawaii]

Simon is kind of magic with figuring out break-ins, isn't he?

[@skosichm]

This reminds me how fog puzzles work. In the sense that the solution path leads the solver around in a clear sequence from clue to clue. I think this artistry plays into why so many people love it! Fog without fog (like my typical work day😅)

[@chocolateboy300]

I finished in 140:45 minutes. This was an incredibly enjoyable puzzle that shows why Yttrio is at the top of these Yin Yang/Cave/Etc rulesets. I made an egregious error for the first 47 minutes and mixed up what shading and unshading meant. I was trying a different color set and that screwed me up on what they meant. Surprisingly, the break-in with the two dots in box 1 was the same. Once you actually understand the rules, the puzzle flow very well. I think I had two favorite parts. The first one was seeing that a collection of shaded cells had to form in column 4 extending from box to box 4 and a little more. This was due to an isolation occurring of at least one unshaded part. It was so cool, because I kept coming back to it slightly later in the puzzle and saw that it was the same logic. My next favorite part was figuring out the entirety of box 6. That was such a fun calculation and it would have resulted in two possibilities, but the clutch 2 and 3 in box 1 completely disambiguated everything. That was some awesome setting. The rest went smooth. This was a fantastic puzzle, especially when all rules are understood. Great Puzzle!

[@kosumi68]

Lovely solve of a really great puzzle. Thank you!

[@stevieinselby]

That was a fantastic puzzle 👍🏻 - too hard for me, but while watching the video I was able to see the next steps in a few places and I could follow what Simon was doing throughout - it felt _almost_ in reach, which is better than some 1hr+ videos! But sympathy for anyone who was trying the puzzle and kept wanting to avoid having a 2×2 of the same colour, because that was one of my pitfalls...

[@tyrgannusgaming6657]

Wondered if this going to get featured. 100% on sudoku isn't the most common anymore I find (not that it was ever common) Nice job yttrio

[@allos-e1q]

Is there a website to find these puzzles? I'm not sure where Simon and Mark get them

[@tyrgannusgaming6657]

@@allos-e1q If people are talking about a rating, it is likely they are talking about Logic Masters Germany. A large percentage of puzzles featured on this channel are on there, but certainly not all of them

[@allos-e1q]

@@tyrgannusgaming6657 thanks!

[@agoristtaxadvice]

Such a BEAUTIFUL solve

[@pirukiddingme1908]

Have to agree, that didn’t feel like 1hr 20, felt more like about 30 mins, lovely puzzle, great solve

[@virtuous-sloth]

The interaction of a two-colour cave/wall white dot with the cave renban rule is both extremely flexible and extremely powerful, and doubly so when there are two white dots in a box, since their wall-cells will bracket a cave renban sequence. Wonderful. Adding the visible cave-cell counting circles is different enough to make for a really interesting sequence of deductions.

[@juliadefranco1130]

Agreed that this is unusually well constructed! Took a while to solve but it flowed very smoothly and was very fun to do.

[@grahamania]

01:11:42 for me. Fantastic puzzle! Wonderful way of combining renban with caves. Kind comment.

[@danielmaryakhin3057]

Using purple for non-renban cells - typical Simon :)

[@mattgangel1]

I came here looking for this comment

[@williammorris7279]

I thought he had reached the limit in the recent "Do you use a pencil to solve sudoku" when he used blue (rather than the usual green) as one of the provisional colours (with purple) to mark parity in a German whisper, when blue is the colour they use when they know the parity of that cell is low, and indeed, he used blue for low once he had solved the parity (meaning he did not have to change the "provisional" colour), but only after colouring the given 2 as blue for low before he had determined the whisper parity. After all that, I had to have a lie-down.

[@RichSmith77]

​@@williammorris7279To be fair, he coloured the 2 blue after he showed it couldn't be purple, not because 2 is a low digit. It was what determined blue as low, and thereby determined the polarity of the German Whisper. But yes, picking blue as a provisional colour in the first place was a mild irritation. 😂

[@williammorris7279]

@RichSmith77 You are absolutely right! I clearly had lost all reason by that point. (Incidentally, I am honoured by your reply, because I have often noted (and "liked") your clear comments.)

[@RichSmith77]

@@williammorris7279 Thank you. My forthright responses to a few people have wound a few people up in the past, but I try to be helpful when someone has a query. 🙂

[@Tepalus]

37:40 for me :) Had a realy nice flow to it and was a lot of refreshing logic!

[@AleksandrYgA]

45:53 for me. At first I didn't have a clue how to start but renban interaction with white dots in box 1 quickly caught my attention

[@martysears]

Slick... very slick indeed! Awesome feature

[@piarittersporn]

Great puzzle. For a long time I was struggeling because I understood the rules in that way, that ALL shaded cells had to be connected like the unshaded cells.

[@wordclover]

Wonderful puzzle with just the right balance of desperation and enlightenment for me. 78:31. Next: watching Simon zip through while patiently explaining every step on the way.

[@jadeEpeace]

❤ thanks for sharing another great puzzle and solve video.

[@Jodawo]

There have not been very many duds when it comes to puzzles being featured here. I will say there are many that have slipped through the cracks to only be discovered later and found to be a pleasant surprise. There are some that I know of that if the setter was not proactive and insistent, their puzzle would not have been featured at all. One such puzzle is currently in the top 10 of most viewed and liked. It's not an easy job to decide which puzzles should be featured. There is some bias because everyone has different preferences. I can imagine testers may have preferences toward different rule sets compared to other rulesets. I personally have sent in puzzles and have resent them for different reasons. One possibility the puzzle got lost in the email. There really is no way to tell if the email gets through or not. A second possibility there may have a lot of other setters that were sent in at the same time. I have heard they get sometimes 20 puzzles a day sent in. The third possibility is that the person opening the email and testing it may not prefer that type of puzzle. By resending it, there is a chance another opinion might be more favorable. You just need to be patient. If you think your puzzle is good enough and should be shown, then you should give it every opportunity. Also, recheck your puzzles to make sure there is no mistakes. Chances are you will not be getting an email giving you a reason why it was not chosen and that could be easily one of them.

[@lloydwalker6965]

at 1:11:05 "i think there's going to be a nice simple way to articulate this". answer: sudoku in row 6 puts a 2 below the last circle. That circle needs to connect to the rest of the green, but if it goes down it takes the 2, which means it also needs to include the 3. So either way it must go right to claim the 3. That way you claim more big green digits and it tidies up much simpler.

[@energythief]

1:13:00 "So that's not where we look"... it's literally forced by needing to grab the 7!

[@MORISENSEIISGOD]

Finished in 2hr 7 min. I only realised the checkerboard rule 90 minutes in. I would have been much faster if I had remembered earlier. Why can I remember the checkerboard rule for yin Yang but not cave? A beautiful construction Yttrio!

[@Adramelek14]

Managed a complete solve before starting the video. I do like the Ying Yang and cave rulesets. I was quite surprised that it went as smoothly as it did. I was sure I was making mistakes but it just seemed to make sense.

[@mstmar]

I had a really good trick for this puzzle. i extended the renbans across the white dots. they change colors, but the digits are still consecutive. The green cells on the white dots need to be extreme, and the purple on them extend the renban. This is really useful in box 6 as the 1 and 9 can't be in green anymore. this easily places them in the 2 purple squares in col 9.

[@jdferreira]

54:11 for me. I'm very proud of this time, I got to not do any mistake along the way, which I often do, and I really enjoyed the logic steps. This was very entertaining!

[@WhoStoleMyAlias]

Felt like I was missing quite a few easy bits in this puzzle, like not realizing for minutes that entering a 6 in r3c5 would lead to an isolated shaded cell in r3c8. Gradually I started recognizing the patterns faster though and finished just shy of 52 minutes with 4 seconds to spare. Enjoyed this one.

[@AditaBattleForge]

What a blast! This was wonderful! ❤

[@Gonzalo_Garcia_]

29:24 for me. Fantastic puzzle!! Really enjoyed the solvepath on this one.

[@willboss7487]

1:19:55 unbelievable clever! I totally agree!!

[@Coyotek4]

47:38, but I had a momentary brainfart (thinking r9c6 had to be a particular type when it didn't) and took a quickie peek; oh well. Incredible puzzle!

[@masonivinskas5405]

I’ve discovered green my lord…

[@rnulfschmer7537]

A nugget of the purest green?

[@xerodeus2337]

on the internet, trolls do what they do purely for attention. So when they get attention, even when it's calling them out, etc, it reenforces their behavior. That's why they do it so they can see clips like this video where their antics get highlighted.

[@Paolo_De_Leva]

_"We are committed to making sure that every day you should see two world class puzzles."_ (Simon @5:23) 👉You👈 are. There is *no doubt* about that❗ This makes CTC great, in my opinion. Mark does it often as well, but not every day. Sometimes he features world class solves of puzzles that are as far as I can imagine from containing world class logic. They are selected for different reasons. Sometimes they are debuts, sometimes they just appear cute. That's not a problem for me, provided you admit they are by no means world class constructions. Anyway, I have been giving you and Mark my 👍 everyday since 2020.

[@A_CC_K]

Amazing puzzle. The sudoku hunt was brilliant and great fun.

[@MasterHigure]

50:00 Not how I saw there couldn't be a green 1. You have two dots. They each have to have an extreme green digit, with a non-green neighbour. An analoguous argument also immediately excludes a green 9.

[@darkpheonix77]

box 6 could have been done much simpler with just the fact that the renband is on both white dots, thus it can be 1 or 9 as it needs two numbers that are not in the renband sequence but are sequential with it.

[@ronjohnson6916]

Yup. Wonderful construction.

[@KittSpiken]

To avoid a bit of sudoku at the end, if the last circle was 7 it would have to extend all the way down to 1 in row 8, breaking that regions remban.

[@ericpraline1302]

Rewarding subterranean excursion, thanks.

[@elizabethgrosvenor153]

I've only seen the rules so far and am looking forward to watching the solve, but -- I am really (really) surprised to hear you describe the orthaganally connected UNshaded cells as the cave! I thought the shaded (dark) cells were the caves, that has to get to the edge the way a cave has to get to the open air, and the unshaded parts (especially since you shade them green -- I don't know how standard that is for anyone else) were the hill/mountain into which the caves sojourn! But the caves don't all have to connect because... caves don't always connect. You can have several different caves going into the same hill.

[@elizabethgrosvenor153]

Having seen the rest of the video and seen you refer to the shaded cells as 'wall' (of the cave), I do understand, sort of, how you came to the conclusion that the unshaded area is the one cave. But, in a real cave, there could be a bit of wall like a pillar, so there's no requirement that it would need to get to the edge, right?

[@OddLittleShoppingBag]

11:27 You replaced your grey color with your indigo color during a fog puzzle because it was confusing.

[@PassionPopsicle]

Another movie length video (albeit, romcom or animated movie length, not Lord of the Rings length) Will be interesting to see the flow of this - I feel like these long videos are either a hard, but pretty straight story, or a collection of enormous brick walls and long pauses between

[@zhoppa]

coloring 2 days in a row: a treat!

[@kikania]

I've had a go at this recently and didn't get anywhere, guess I'll try again!

[@gregind01]

I'm sorry Simon, but all of your mentions over time of Scylla and Charybdis has me wondering what happened pre-Scylla? Does she have to marry Elvis or not? Yes, you don't want to talk to me at parties either!

[@ericpraline1302]

Perhaps LMD should do some vetting - not sure they do any?

[@bibliopolist]

I think the quality of the puzzles is very good over all, but some in the last time I didn't really find enjoyable neither to try to solve nor to watch the solve (e. g. the foggy limitations one last week and some others, all of them >60 min videos), because they seemed somehow unnecessarily difficult, without really having that one baffling break-in idea. Just a little bit more approachabilty would enhance the appeal of such good puzzles a lot for me, I think.

[@shaunbrowne9870]

The lengths Simon went to to prove that a renban that touched two white dots couldn't have an extreme digit on it. lol

[@masonivinskas5405]

Just made my dinner… perfect timing!

[@LithmusEarth]

You missed the pink 12 box at the top right and you missed the 1234 pink at the bottom right. For bordering.

[@MarkBennet10001]

This is a great puzzle

[@MarkBennet10001]

And a lovely solve

[@nicolasfrancois6360]

The last digit "2" in box 4 can be "wall", can't it ?

[@RichSmith77]

The 5 in the circle above needs it to be cave to see the correct count.

[@hom-sha-bom]

Oh... I didn't understand the rules. I thought shaded cells had to make 1 region and it was forcing me to repeat 9 in rows or columns

[@user-sv7bx6gn8n9]

40:09 for me. Fun puzzle.

[@cotroneigiuseppe888]

One of the most difficult😂

[@vjay4297]

Why do I feel like I have seen it before

[@srwapo]

60:31, I totally missed the "Note that 2x2 areas that are entirely shaded or entirely unshaded are allowed." and looked at the video when I broke the beginning twice. I had a lot of trouble at the end with the renban regions, forgetting that they stop at the edges of the boxes in row 6 and missing how 2 could connect with the rest of the region in box 4, but was able to undo my mistakes and figure it out in the end.

[@craigfjay]

1:11:10 the simple way for box 3: if r5c3 is wall, green must connect via r6c1. r6c1 now must be part of a renban at least length 4, without using 1 or 2 (used up in row 6). It must be at least 3456, taking up all options for r5c3 Therefore the green region must join up through r5c3

[@yashmehta9299]

96:16 relaxed

[@larenabbott4869]

Happy World Logic Day

[@johnosullivan675]

Nice

[@SofiaThielen-b1c]

hi

[@sindrome25]

Quick question, What happens to the puzzles that this guy can't solve? Bosnian bill a lock picker and KZbinr has his naughty bucket. Is there a naughty list or folder? And how hard must them be so simon couldn't solve. I have ssen him solve amazing things

[@stephenbeck7222]

Sometimes he makes a mistake and can’t backtrack enough to fix it. Or sometimes he sits and stares and can’t find a way forward. Happens every so often. If he thinks the puzzle still deserves a video, he may send it to Mark (and vice versa).

[@hewholimpsmartin]

🤟🏽

[@robert36902]

These kind of puzzles with a wall of nonstandard rules are just so tedious to watch for me, sorry. I much appreciate puzzles with standard rules that form something interesting to watch.

[@denisdodelin-m1e]

Hum ? Looks like standard rules for this channel. I'm sure I saw all of them ^⁠_⁠^

[@AskTheMasked]

Me when I click in a non traditional sudoku puzzle and there's a non traditional sudoku puzzle in it :

[@Benjiizus]

@@robert36902 I know what you mean, it's like you have to search through the whole text just to follow along

[@Ytterbio]

Definitely understandable, especially if you're not as familiar with other pencil puzzle genres. The rules for this puzzle are mostly just standard Sudoku and Cave rules, with mostly standard Renban rules for unshaded cells and a slight shading addition to standard Kropki dots, so for some solvers the rules won't be quite as tricky to parse through. Personally, my favorite puzzles are hybrid puzzles (which is why I set so many), though I know they're not for everyone.

[@krishogan3503]

I was confused because the rules on the video say "all shaded cells are connected orthogonally..." didn't think you could isolate wall cells from the rest of the wall cells. Spent 2 hours failing at logic

[@alberttatlock1541]

Yes, thats where I went wrong!

[@RichSmith77]

That's why full-stops were invented, so you can see where sentences end.

[@krishogan3503]

@@RichSmith77 Do you have a point?

[@RichSmith77]

@@krishogan3503 You quoted only half of a sentence, thereby changing its meaning. The full sentence (or clause) is "all shaded cells are connected orthogonally by other shaded cells to the edge of the grid".

[@krishogan3503]

@RichSmith77 It's over. Move on.

[@somaiyaakter6181]

One of the best "Simon" solves ever. (Yes, I love all of Simon's videos). My lowly brain marvels at his god-like logic. I did see the naked single 2 quite a while before Simon did, only because while he was working through the high logic, I was mucking around with basic soduko.