Part 4 of the Dreamiest Dream Sequence

Added: 2026-05-27

[00:00:14]Hello. Welcome back to Cracking the Cryptic. And this is um well this is I this is the fourth video in the dream sequence by Cassini of 6x6 puzzles. Um I want to say it's the final video but that is unlikely. There have been three there are 13 puzzles in the whole set. I was hoping to do an average of three puzzles per video and still keep them sort of 25 minutes, half an hour, um, and hopefully slip a fourth into one of them. Now, that has not succeeded so far. Each video has gone over the half an hour at three puzzles, and one of them took a lot longer. So, realistically, maybe I'll get through three puzzles, maybe I'll get through four, maybe I'll only get through two.

[00:01:10]Who knows? Let's um let's try it in a moment. Uh I do enjoy the speedrun aspect of trying to do these puzzles, but actually they I think they've been getting a little tougher as we've gone.

[00:01:21]And the speedrun element has largely gone, but they're still very good puzzles and very good fun. And I will do try and do multiple puzzles in this video. Right.

[00:01:31]Um, don't forget on Patreon every month we have a new Sudoku hunt on the first of the month and it's competition till the 20th and we urge you to give it a try. Um, we also have crossword and gridoggram videos there including Simon solving Oscar Johansson's first puzzle and um other stuff too. So do check it out. Uh, we've got our apps. They feature um classic Sedoku 2 and the worms. one of some of the worms are 6x6 puzzles as well. If you like these, do have a look there. Um, and of course, we've got a bit of merch as well if you're interested in getting yourself a Cracking the Cryptic mug, for instance, um, using our logos. Check it all out.

[00:02:16]Right, the number of, uh, puzzles linked under the video will tell you which puzzles we're doing. The first of these today is three BLTs in a dream. And thanks to Cassini for preparing this set. Thanks to Fitzy for recommending them. Right, we have um we're placing one to six in every row, every column, and every marked region.

[00:02:42]And a clue outside the grid gives the sum of the digits between the one and the six in that row or column. So in this column, the digits between one and six will add up to five. It might be a single five.

[00:02:56]Then there's a V in the puzzle, a sort of greater than sign, which shows that this digit is greater than that one.

[00:03:03]Right, those are the rules. Let's get cracking on this one.

[00:03:08]Okay, we've got used. If you've watched the other videos in the series, you will know that coloring is often the way. So this yellow cell looks at five of the cells in this box in this region and says that none of those can be yellow.

[00:03:25]So this one must be now we've got yellow cells looking at all of these cells in the next region down. So that must be the yellow cell.

[00:03:35]And then that information peters out a bit.

[00:03:43]Um, okay. So much for that. Right. These two, let's call them violet and pink, can't go in that region anymore because they've been in it. So, they must be in those two cells in column six.

[00:04:02]That might not be a good way. Oh, no.

[00:04:04]That is interesting. Right. Only one of them can be in this group of cells. So, in this region, one of them has to go here.

[00:04:14]because it couldn't be here. Seeing both in that region. I'm I hope I'm being clear enough. Uh yeah, we're getting closer down here as well. So now we've got two of these pink and violet in each of these rows. So this region on the left can't possibly have any in the top three cells. So it's got to pack pink and violet into these cells.

[00:04:44]No, that hasn't worked. Let's Let's go here.

[00:04:48]Let's get rid of pink and violet. I'll try a red here. That in the bottom row is definitely here because it's already been in this region.

[00:05:00]Um then in this region, it can't be in any of those three cells by sudoku here and by region geometry there. So, it's in one of those two in row three.

[00:05:17]If it was here, then then it couldn't be in any of these. If it Oh, where does it go in this row?

[00:05:36]Well, again, it's in one of these two regions.

[00:05:41]in row four. It can't be there. So, it's in one of those two regions. So, they've had their red cell. Oh, look. Red is looking at those. So, again, we get a red in one of those two. Now, that's ruled out all of these as being red.

[00:05:57]And one of those two is red. But is this the only red possible cell in column five? I think it is.

[00:06:06]Yeah, it is. That's weird.

[00:06:09]Um, and that didn't really finish anything off, but it was probably a better cell to do than the the pink and violet stuff. I don't know really.

[00:06:28]Um, okay. How about this? I'm going to call this blue. This sees quite a lot of cells in this box. and therefore must be in one of those two.

[00:06:42]Then it has to be in one of these two in the right in the southeast shape.

[00:06:51]Um it's already been in this region.

[00:06:57]So I don't know that that wasn't a helpful piece.

[00:07:04]No, let's get rid of that blue. Uh, this is this puzzle's a bit harder or for me to select the right pieces to use. This is interesting. Let's call that green.

[00:07:15]We know it's not red or yellow.

[00:07:19]And in this region, it has to be in one of those cells now.

[00:07:24]So, it can't be here. It must be either here or here in row two.

[00:07:34]Now, it's getting a little bit constrained in in this C-shaped region, but perhaps not enough for me to decide whether it's here or in this row.

[00:07:53]If it was there and there, it would be here and here.

[00:08:02]Oh, I don't know. Okay, that maybe I should have just started with coloring every cell in this region and seen what happened with them. Actually, that's not an uninteresting notion.

[00:08:16]Okay, let's make that blue.

[00:08:21]Now, that's ruled out of those cells.

[00:08:24]So, blue's in one of those two in the re in the southeast region.

[00:08:29]It's also in one of these three in the northeast region. And therefore, it's not in that cell or that cell.

[00:08:47]I don't know this. I I really haven't approached this well, have I?

[00:08:55]Okay, let's unwind all of that.

[00:08:59]Let's go back to just having red and yellow done and find a better cell.

[00:09:04]That's what I'm going to do. I'm going to somehow find myself a better cell to work on.

[00:09:15]Maybe I'm going to go back to what was it? I started with those two, but maybe those two would be more interesting because they're definitely up here in row one.

[00:09:27]Ah yeah here okay I'm going to give them different colors here blue and pink I have seen something now that is blue and pink but pink in this region must now be in one of those two cells and they're looking at that so that's not pink so we've worked out up here which one is blue and which one is pink that feels like it's progress a bit this region's pink is not there or there and and it's now not here. So, it's in one of those two cells. And that can't be pink anymore. And that one is. So, now we've got three definite pinks, not including row two. So, one of those two is pink.

[00:10:13]And then we've just got row six left with one of three possibilities. Well, okay, that got something. And it also got us started on blue. Perhaps blue is now in one of those two cells.

[00:10:28]along with a fourth color which I'm going to call green. Those are blue and green. Where's green in this column? Not in the same region. It's there.

[00:10:42]Pink is not here, nor is yellow. This is the sixth color. Oh, look. Yeah, this box has got this region has got five colors in. So, we'll put gray in there.

[00:10:52]And that cell in the final column is also gray. And this region needs a gray either at one extremity or the other.

[00:11:09]Now what do we know about green? I haven't really f not much.

[00:11:16]What should I be doing the work with?

[00:11:19]Blue or green?

[00:11:22]or gray. Oh, I don't know. But I'm at least happier that I've made some progress now. Oh, these are pink and yellow together.

[00:11:37]Interesting. Maybe this column needs yellow, green, yellow, which can't be there. Oh, this cell sees five different colors. Blue, pink, red, yellow, and gray. So that is green. That's a naked color single. That's so strange to find existing at all. Right now we know where green is in row four. Green in this region has to be in one of those two.

[00:12:08]And what have we still got to put in this re in this row? Blue and gray.

[00:12:12]Well, in this box we need blue. And that's in one of those three cells.

[00:12:21]Oh, gray is in one of those two in this reclining shape. And that means it can't be in this cell, which is also not red, yellow, or pink.

[00:12:36]So, it's definitely blue or green. No option.

[00:12:45]Um, I wish I knew which one it was, but I don't.

[00:12:55]Do I? Is there a way I do? I don't think so. It's not impossible in this puzzle that we're meant to actually start looking at the sandwich clues as well, but that feels a bit Oh, okay. Right, I'm going to think about the sandwich clues in case it helps because I'm not sure I can do much more disamiguating.

[00:13:20]Now, the fact that I struggled so much and then achieved a bit may militate against that. But let's try and do this at speed. So this row, the six is made up of two cells. It can't be one because six is a crust itself and it can't be three because one is a crust. So the six is made up, in fact very specifically of a two and a four. So in this re in this row somewhere we have a one then a two and a four then a six and they're either going forwards or backwards. Now that could mean that pink and yellow are the crusts.

[00:13:56]In that case pink and yellow would be the crusts in this row and this would be a two four pair and this would be a two three pair and this digit would be two.

[00:14:07]Red would be a three. Now how would that work here? That would be the the one and six. And this would be the four in between them, which would be the same color as that, which would be a four. And it all seems to hang together quite well. So, it seems to me probable that pink and yellow are the one and the six. Now, the alternative is that pink is in the sandwich. If those aren't the crusts, then the crusts are either there or there in the row. And then pink would be either two or four. It would be in the six sandwich, right? It couldn't be four because four can't be an outy in this row. The four in this row is sandwiched between the one and the six. You can't make that up with two digits cuz one's a cross.

[00:14:57]So if that is in a sandwich, it's a two.

[00:15:01]So in fact, this pink digit is either 1, two, or six because it's either in a sandwich and is a two and is appearing here. therefore or it's a crust and is therefore one or six. So what is that going to tell me?

[00:15:20]Um that is going to tell me I don't know. Does that tell me something? Yes. Let's just keep focusing. If this is in the in the sandwich, it's a two r then it would be a two in this column.

[00:15:38]And then the crusts would be surrounding a three.

[00:15:43]No, it would be surrounding a single digit which would be a five.

[00:15:52]Now, where would they be? They could they be red and yellow? No, because that wouldn't work in this row. So, they couldn't be here and here if this was a two. So, could yellow be the sandwiched five with crusts here and here?

[00:16:15]That would make blue and green, blue or green a crust and this digit a crust, which couldn't be red.

[00:16:26]Oh, in this row, by the way, these are red and gray. That's all that's left in the row. Oh, that Yeah, that's very interesting. So the crusts in this row, if that's in the sandwich, the crusts are a blue or a green with a red or a gray. So to make that work in this column, it has to now be that being a crust and that being a crust with five there. And that doesn't work in this row. Oh my goodness, that is quite confusing.

[00:17:03]Right. What I'm saying is if this if if these if pink and yellow weren't the crusts in this row, the one and six would either be there with one of them being red and gray and one of them being blue or green or here with one of them being red and red or gray and one of them being blue or green. And if that occurred in this column to get a five, we we would know this digit would be a two. So, we would be sandwiching a five between a red and a gray two cells away.

[00:17:34]A red or a gray two cells away from a blue or a green. That would have to happen here with the five sitting there in between them. But that would not work in this row where yellow five would be sitting here in between a crust and another crust further on. No way. So, we have proved that pink and yellow are the one and six. They are the crusts in this row. Now, blue and green are a two four pair. And that's just fact.

[00:18:04]In this row, we've got a three and a two. And red is three and that digit is two. So, red is always three. We got a three in the corner.

[00:18:16]Um, now we've got our sandwich done in this column and this row. In this row, we need a four in this cell.

[00:18:25]And that makes this one a two. But I don't know its color. So, we're not done. In this column, we need a five.

[00:18:30]That's here at the bottom. In this column, we need a five. And that's gray.

[00:18:34]So, now I can color gray into the bottom row. And that's a five, isn't it? So, that is not gray. That is the point about this cell. This is blue or green.

[00:18:46]And this one is Sorry, I hit the wrong button. This one is not I didn't mean to hit that. I don't know. I was pressing I was trying to press delete and I pressed enter and that checked whether I was okay so far which was not intentional. That's my five in this row.

[00:19:03]This is not gray.

[00:19:06]I can I can probably finish my coloring now. Those aren't red or and I might as well do digits, might I? I don't don't really know the the difference at this point between doing one or the other. Um, so I've got my sandwich done here and here and here.

[00:19:23]They're all done. Forget the sandwich clues. Let's just do Sudoku stuff now and finish off. So this region has a four in. So now I know that green is a two.

[00:19:36]Yeah. Okay. I will correct the coloring there. And here.

[00:19:43]Red is a four. Green is a two.

[00:19:46]Um, yellow. Well, I Oh, they they're probably going to be disambiguated by this thing, the one and the six. Yes, if I'd ever bothered to stop and thinking about the one and the six, they were never going to be disambiguated by the sandwich clues. So, it was always going to have to be by the greater than less than jobby.

[00:20:10]Right, we're not finished yet. Actually, it might be doing a little bit more work than just deciding on the one and the six.

[00:20:20]Uh, we've got greens in some of Well, they're an X-wing across those cells.

[00:20:28]Reds, have I got fully marked reds? Yes, they're an X-wing.

[00:20:34]Blues are done. Yellows are not done.

[00:20:39]This seems to have to be yellow in the bottom row. That's going to force this to be yellow in the top row. That is going to do a lot of resolving.

[00:20:49]Uh, this is not green anymore. Nor is that.

[00:20:54]That's not red. This must be red. This is definitely pink. This is definitely not pink. And I think that does all my colors. Oh, I've got a five on this. Uh, greater than, less than. That makes it very easy to do. Six, all the ones, all the sixes, all the threes, and all the twos. That's three in the corner again. There we go. And that's the solution. That's a very clever puzzle. It's taken me 18 minutes. So, goodness knows how many we'll get through here. Let's move on though to three X's. Oh, that's not very well positioned. Oh, maybe the last one was bad as well. Anyway, here we go. Three.

[00:21:37]Why am I got the blooming pen tool on?

[00:21:41]Right. 3x is a nightmare. A clue outside the grid gives the sum of the first x digits in that clues row or column where x is the digit in the cell next to the clue. Okay, let's get cracking on this.

[00:21:55]So 15 is not enough to be six. The six cells in a row or column add up to 21. 15 is going to be the sum of all of those except six. And that could start with four, five, or six because the outies add up to six.

[00:22:17]No, not with six, with four or five.

[00:22:21]So that's a four, five pair.

[00:22:23]In one case, we have a six at the bottom of the row because the five there is going to be adding 1 2 3 4 5 and leaving a six hanging out. the four.

[00:22:35]No, I'm wrong because what? Oh, no. I'm not wrong. I am not wrong. Three digits won't do it because even though one, two, three could be the outies, they would clash with a three as an X. Sorry, it didn't work that out properly, but I've got there now. So, it is four or five. In the four column, the last two digits are going to be one and five because they can't use four and they're going to add up to six. Right? In this 12 column, we can't have a two cuz we can't have a 10 next to it. We could have a three with a four five pair.

[00:23:09]That's all.

[00:23:11]Could we have a four? I would think so with one two five.

[00:23:15]We can't have a five. The minimum sum is 15. So that is three or four.

[00:23:24]Uh sorry that pencil marking was bad. I was planning to say that these cells are either part of a one five pair or they're a six.

[00:23:34]Now I have to do something with coloring or okay this digit will start coloring that has to be here in column one. Oh, and this digit which is different has to be here in the region next to it.

[00:23:50]And then has to be in one of these three cells yellow.

[00:23:58]Okay, I'm going to color Oh, no. This could be yellow. So, I'm not going to color that yet. Oh, we've also got a digit here which is going to end up there and can't be pink. But that could be yellow. So let's get rid of yellow for now. Let's do this digit which is also there as orange and and I was going to look at this digit which is also not pink and it's going to have to be in one of those two cells but that again could be orange.

[00:24:36]Okay, orange in the top two rows. One of them is going to have to be in that region. and one of them is going to have to be in that region.

[00:24:45]So orange in column one is in one of the bottom two cells.

[00:24:50]If it was there, it would have to be here, here, and here.

[00:25:06]Tricky. Um, and how does that play with our x sums? Or does it? Now, this cell is also here. That can't be orange.

[00:25:15]For some reason, I haven't quite figured out.

[00:25:20]Oh, no. It can. If orange was there, it can definitely be orange.

[00:25:26]Okay. This can only be orange if it goes, this cell is the same as this one. And if that's orange, it's going to have to go here in column four and here. And that way it would be between four and five in the top row. So it wouldn't be one of them, but it would be in this cell. So it would be a three.

[00:25:50]Orange would if it goes in row one, column 3, it is a three.

[00:25:57]Now is that okay? This pair would be a four, five pair. And one of those four off I don't know that be 216. I think that does work annoyingly. So I haven't ruled that out.

[00:26:14]So maybe what I need to think about is what if this isn't orange and is there.

[00:26:24]Now I'm going to color these two blue and light blue and they must be here in this region.

[00:26:33]And this bluish thing is going to have to be in one of those two in row five.

[00:26:42]And this one which is in one of those two is going to have to be in this shape.

[00:26:48]Oh, that one.

[00:26:50]Yeah. Where's that in this region? It can't be here because that sees both such colors. And it can't be here by sudoku. So that digit does go here. So, we've got this pair turning up as a pair in row five.

[00:27:07]Where's that digit in this region? It's in one of those two cells.

[00:27:19]It's also in one of those two.

[00:27:24]So, unless it's four or five, it's going to end up here. But it could be four or five. Oh, bother. This is another one where I just need to think through the the possibilities. If that was a four, this would be 4125 in some order. These would be three and six.

[00:27:49]Now, how can I use that?

[00:27:54]Oh, there was also the issue that one of these must be a five and one of these must be a five because whichever one begins with a four up here ends with a one five pair in the column and whichever one begins with a five begins with a five.

[00:28:15]Okay, let's think instead about this being a three with a four five pair here.

[00:28:22]Now, for this to be an outy, this would be three, five, four. That five would go with a one here and a four there. So, we'd have fours in those two positions.

[00:28:33]Is that feasible?

[00:28:37]There'd be a four in one of these two.

[00:28:42]There'd be a four there. Four would have to be orange.

[00:28:49]No, that won't work. Right.

[00:28:56]Okay. What I've now ruled out and it's not a hugely conclusive. No, it is a hugely conclusive thing. I think I've ruled out this being a four.

[00:29:06]So, let me explain that. If this No, maybe I haven't. Maybe I haven't.

[00:29:19]Oh, goodness. Right. What I was seeing was if this was a three and it and if that's a second and if a nested if statement if this wanted to be part of the outies here it would have to be a five cuz if that's a three this is a five four pair.

[00:29:43]So this could be a five in that case and this would be a four. However, four and four there that is going to falter.

[00:29:55]That's not going to work.

[00:29:59]Um and the reason it doesn't work is because that puts a four in one of these cells, makes that a four.

[00:30:09]But now for four to be orange, it would have to be in one of these cells and that must form a clash. So that doesn't work. How what what that doesn't prove is what this is. What it does prove is that if this is a three, this is now not an outy. And therefore, if this is a three, this is a five.

[00:30:37]It does prove that if this is a three, this is a five and this is a six and this is a one five pair and this is a four.

[00:30:53]So if this is a three, this is a five.

[00:30:55]Okay. Alternatively, this might be a four.

[00:31:02]And then we've got a three six pair at the end.

[00:31:08]Then this digit is three or six.

[00:31:16]This is 1 2 or five.

[00:31:20]Maybe I should be asking can four be one of these digits. Maybe that's an interesting question. If this is a four, which is in one of those two cells, it's either orange, but I think I worked out that is possible.

[00:31:42]Oh, if this is a uh how if this is a four, I think that has to be a four in that situation.

[00:31:54]Otherwise, these would both be fours.

[00:31:57]We'd have a four in one of those cells, a definite four there. So, we'd know where it was in column six.

[00:32:04]And now, we couldn't have something is wrong with this and I'll work it out in a second.

[00:32:15]If these were all fours, there is something wrong here.

[00:32:20]This region can't have a four.

[00:32:24]So, if that's a four, that's a four.

[00:32:28]Now, did I just work out that if that was a three, that was a four? No, I think I worked it out the other way round. If that was a three, that was a five.

[00:32:42]Oh, that's really annoying cuz what I want to do is work out they're both this is always the same depending on what this is. And then I've got a start and I've failed to do that.

[00:32:53]I should probably have done more coloring.

[00:32:57]Ah, that's annoying when that happens.

[00:33:06]I should have done more coloring, but I didn't know what to do.

[00:33:11]Oh, those two digits.

[00:33:14]Oh, yeah. Look, I should have done more coloring first. Right, these two in the bottom row are there and there. Well, we know that one is there. So this one must be there and it's not orange. That is vital. This is now definitely orange and is three or four moving around the grid. Right. Well, that's interesting.

[00:33:35]Now this yellow is in one of those two in this northwest region.

[00:33:42]It's somewhere up there in the final column.

[00:33:47]Um, oh, but it's got to be in one of these two cells.

[00:33:56]Okay. I don't know much more about it, but I do know it's not there.

[00:34:03]And that was an interesting thing to do.

[00:34:06]Now, this digit also goes here. That can definitely be orange at this point.

[00:34:14]Can it avoid being orange?

[00:34:17]That might be the interesting question now because it's not pink or yellow.

[00:34:24]Uh but we only know it's not that shade of blue or light blue. Maybe I could carry on with the blue and light blues.

[00:34:33]Hadn't considered that much. Where's this in this column now? I don't know. I don't know how that works. Maybe I should actually choose a blue and a light blue there just to start that off. Um, yeah, then there's a blue in one of these two in this region. That that's worth doing cuz that's now orange has to be in one of those two in that region.

[00:35:03]Now it's in one of these two at the bottom.

[00:35:08]Um, I feel like this is actually worth doing. Uh, let's call this this is a fifth color. Oh, no. Yeah. No, this is a fifth color because it sees all the others that we've done.

[00:35:25]Oh, right. Where does pink go in this row? It's Sorry, that's really straightforward. And this is the sixth color. Red. Not red. Gray.

[00:35:36]That pink now is in one of those two cells. And this is gray.

[00:35:41]One of these two is now gray. And this is light blue. Surprisingly, yeah, I should have done more coloring.

[00:35:52]Right now, in this column, we need orange and light blue. Right. Well, the bottom one's orange and the top one's light blue.

[00:36:05]Yeah, there was more coloring. There was more coloring. I got suckered by the last puzzle. These are dark blue and light blue in some order.

[00:36:15]And now that's used up all the dark blue. So, one of those two is dark blue.

[00:36:24]Right, we're getting close to forming a decision about that digit is not the same as that because it is the same as this.

[00:36:37]Oh, there's an orange in one of these two.

[00:36:42]Yellow is not easy. Pink, I don't know.

[00:36:45]Down here, we've got pink and gray. Ah, so that's double pink in those cells.

[00:36:51]And therefore the last pink is there.

[00:36:53]These two are yellow and gray in some order.

[00:36:58]Uh this one is also I want to say yellow or gray but it could be light blue. So I don't know. Right now now I need to think about the numbers again.

[00:37:15]If this is a four or do I start with if it's a three?

[00:37:27]No, let's start with if this is a four.

[00:37:31]That's a three. This is six. Orange is three at that point. And therefore, this must be orange and be three. And this would be five.

[00:37:46]And this would be six.

[00:37:48]Light blue would be six. If this is a four, three, five, four. So pink and yellow would be one and two.

[00:38:06]So if this is a four, we have to achieve these being one and five. Pink or yellow is one or two. So that would be pink and yellow are one and two. So that would be one. This would be gray five.

[00:38:20]That seems to work. So I I'm not ruling that out. Okay. Let's think about if this digit was a four, then this is a 51 pair at the bottom.

[00:38:40]um in dark blue and light blue. And this five would have to be dark blue cuz it couldn't be light blue.

[00:38:49]That would make this six.

[00:39:01]Oh goodness. Okay, that's really getting interesting.

[00:39:06]I can see some nightmarish um logic there. If the Where did I start?

[00:39:14]If this was four now, I can't even remember where this chain started. Sorry. Maybe I've got to do more sedoku still. More coloring.

[00:39:27]Is there a color I haven't had in this row?

[00:39:32]No. We need another blue of one description and another yellow or gray up here. Ah, that's no good.

[00:39:42]We've had light blue. Oh, where's light blue in this column? It's got to be here. Goodness, that is just easy if I spot it. Oh, this is not dark blue. This must be dark blue in the top row.

[00:39:59]Okay, that's that's interesting. Now, this is now not dark blue. That was a problem for something.

[00:40:07]This is either yellow, orange. It's not orange. It's either yellow or gray. Oh, the orange in the top row is now definitely there. Now, that's a big deal cuz now we've got orange is when one case three or four and the other case four or five. Now, we know orange is four. It's taken me ages to figure that out. But there we go. These two are a 51 pair. So, these can add up to 15.

[00:40:32]The blues are a Oh, that hasn't worked.

[00:40:36]That's wrong. I've got something badly wrong there.

[00:40:44]Wow. What have I got wrong there?

[00:40:51]If those add up to Well, 4623, that is 15.

[00:40:56]This seems to be me seems to me to be unable to be dark blue or light blue.

[00:41:02]So, how can it be five if they're a one five pair?

[00:41:09]Okay, something went wrong.

[00:41:12]I thought all my coloring logic was fine. I mean, I know I didn't get to it quickly, but I didn't see what was wrong with it.

[00:41:24]I do see something wrong with it. We don't have any light blue in this column. Right. So, I botched it.

[00:41:35]Had I botched it at this point?

[00:41:39]Well, I mean, I've already got the problem that if that's light blue, I can't put light blue in both of these columns because they'll both end up in this row. So, I've got it wrong at this point.

[00:41:52]That is very surprising.

[00:41:56]Okay, I'm going to have to go all the way back with the coloring and let's step through it bit by bit till I find the error.

[00:42:09]So, we started with pink. That's right. Orange. That and that is correct.

[00:42:18]Then I said the orange in these two regions are in rows one and two. So that orange marking must be correct. Then I said this two is the pair of blues and they must be there in that region. And that digit must be one of them because this region needs one dark blue and one light blue. It can have one in that row and it can't have one there.

[00:42:45]That's fair enough. Then I ah then I went with yellow next because that digit in the yeah these two in the bottom row have to be in those cells and we've just worked out that one is there. So this one has to be there and then new colors. That's fine.

[00:43:03]That made that one orange.

[00:43:08]And I know that 12 begins with three or four. It can't begin with two and it can't begin with five. Yes, that's fine.

[00:43:14]So the yellow's in one of those two.

[00:43:17]That seems right. And one of those two.

[00:43:19]Then that seems right. Now I just randomly chose which was dark blue and light blue and did a couple of those.

[00:43:27]Then I said dark blue must be in one of those two cells in this region. That's correct.

[00:43:36]I also said yellow must be in one of those two cells.

[00:43:40]And that's correct. This one sees a lot of them. Okay, I I don't think I've done anything wrong here. I then said orange must be in one of those two and one of these two. And that's for this region.

[00:43:51]Yes.

[00:43:55]Then I announced that this was pink in this row.

[00:44:00]As long as my five colors are different so far, that's right. Then I called that gray.

[00:44:06]Then I said pink and yellow are in these two. That looks right to me. So, the other one is gray.

[00:44:16]Oh, then I said gray has to be up top in this region. That's right. Because the region Oh, look. I've put two pinks in this region. So, I've definitely not done something right with pink.

[00:44:30]When did I put pink there? That was when I decided that we needed pink in this row and it couldn't go here or here. and I put it into the same region it's already been in. Ah, because why couldn't one of these blues be pink?

[00:44:48]That's what went wrong.

[00:44:51]So, it's when I started putting the blues in.

[00:44:58]Yeah. What I can do at this stage already is say that pink is in one of those two cells.

[00:45:06]So, these are not um light blue and dark blue. They're light blue and pink.

[00:45:16]And that one has to be light blue because it sees pink. It's so much more straightforward when you get it right.

[00:45:22]Um now, or is it? Because we've still got quite a lot to do at this point.

[00:45:28]I've got two colors to put in here that we haven't used yet. I'm only four colors in at this point.

[00:45:37]Yeah, I'm sorry. I did really mess that up. But you know, mistakes happen when we try and fix them when we find them.

[00:45:45]We need an orange in this column.

[00:45:48]Orange, yellow, light blue in this region. Has to be in one of those two.

[00:45:57]So that's a blue yellow player. Then orange has to be in one of those two.

[00:46:06]I mean, now I'm very tempted to just randomly assign colors to these, but I don't know if that's the best way of treating this. I still need another pink in one of those three. Oh, pink definitely in one of those two for this region and orange in one of those three for the same region.

[00:46:31]This is a sort of pink X-wing which is leaving the sixth pink to be here.

[00:46:38]That's strange, but it is true. Well, it's not that strange. If I just looked down this column to find pink, I'd have found it.

[00:46:47]Okay, I'm going to call this red. New color. Where does that go in this shape?

[00:46:51]Got to be there.

[00:46:55]Then it's in one of these two along with yellow. And this one is gray. And that's also here at the end of the beginning of row four. These are now red and light blue.

[00:47:07]Light blue must be in one of those two.

[00:47:11]This column needs one more color, which is orange. And neither of these can be orange. And that can't be orange cuz it's in the same region. And this is orange. That's gray to complete the column.

[00:47:26]Now we've got a light blue. Do we know about this? No, we've still got red to put in there.

[00:47:33]Now, these are different, by the way, which is unsurprising, but essential.

[00:47:41]Oh, I tell you what, that gray is one of four or five and is not orange because it's a different color. That digit is the other one of four or five and is not orange because it's in the same column. So orange now has to be a three. Actually, we can put them all in. That's the extra coloring I was looking for there. This is gray at the bottom. And that in this cell is 1, five or six. And in this cell is four or five. So gray is a five.

[00:48:12]And we are just going to finish off. Now that's a four up at the top. So that's a one. So that 4 6 3 and two add up to the right number. This is a six. So that 5 3 1 2 4 add up to the right number.

[00:48:27]This is 345 to begin the row so that it adds up to the right number. And now we can just do sodoku. And we will just finish this one off. And that's taken a ridiculously long time because of the mistake. Basically, um, pink is one or two according to that cell.

[00:48:46]And two or six according to this one.

[00:48:49]So, it's definitely two.

[00:48:53]That digit is a six.

[00:48:56]Yellow and red are a six and a one. So, that one's a one. That one's yellow and is a one.

[00:49:03]I can just do a bit of converting there.

[00:49:07]Red is a six. Well, that can't be here.

[00:49:10]So, this digit must be red and six.

[00:49:15]This two is definitely pink.

[00:49:19]Um, and we've got a one and a six to put in the top row.

[00:49:25]Six is red, light blue is four, one is yellow.

[00:49:34]That's the two in the column. That's the five. That's the four.

[00:49:39]Two is pink.

[00:49:42]Five. What color is five? Gray. So there's a gray needed in row two. That's a one needed for its region. This is a four.

[00:49:53]That's a six.

[00:49:55]That makes this four and six.

[00:50:02]Get the coloring right. And we can get the numbers right. One and four. There we go. Well, that took a long time. So, only two puzzles in today's video, and there will be a fifth dream sequence video to come. Thank you for watching, and bye for now.